Engine Control System (diagnostic Codes (p1604-p2610) & Circuit Tests) Toyota Land Cruiser 200 рестайлинг

DESCRIPTION

This DTC is stored when the engine does not start even though the STA signal is input or when the engine takes a long time to start, and when the engine speed is low or the engine stalls just after the engine starts.

Using the Techstream, the conditions present when the DTC was stored can be confirmed by referring to the freeze frame data. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.

It is necessary to check if the vehicle ran out of fuel before performing troubleshooting, as this DTC is also stored when there is engine starting trouble due to running out of fuel.

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INSPECTION PROCEDURE

HINT

1. In contrast to normal malfunction diagnosis for components, circuits and systems, DTC P1604 is used to determine the malfunctioning area from the problem symptoms and freeze frame data when the user mentions problems such as starting difficulty. As these DTCs can be stored as a result of certain user actions, even if these DTCs are output, if the customer makes no mention of problems, clear these DTCs without performing any troubleshooting and return the vehicle to the customer.
2. If any other DTCs are output, perform troubleshooting for those DTCs first.
3. When the Data List item "Immobilizer Fuel Cut" is ON, the engine cannot be started.
4. Read freeze frame data using the Techstream. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
5. When confirming the freeze frame data, be sure to check all 5 sets of freeze frame data. Refer to «FREEZE FRAME DATA»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction) .
6. When confirming freeze frame data, if there are multiple items related to the cause of the malfunction, perform troubleshooting for all related items.
7. Try to start the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and compare it with the freeze frame data.
8. If the malfunction does not reoccur, carefully check the vehicle conditions from when the malfunction occurred using freeze frame data.
9. When performing inspections, jiggle the relevant wire harnesses and connectors in an attempt to reproduce malfunctions that do not always occur.
10. If the same inspection or replacement procedure appears 2 times when performing an inspection procedure, it is not necessary to repeat the procedure the second time.

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1. Malfunction Recurrence and Inspection Areas Freeze frame data exists, but the malfunction (starting difficulty) has not reoccurred and the malfunction conditions are unknown. The engine speed recorded in the freeze frame data is 0 RPM (the engine does not crank). HINT: One of the following problems may be present: battery depletion, excess engine friction, a starter malfunction or a crankshaft position sensor malfunction. If the battery voltage is less than 6 V during cranking, there is a high probability that engine friction is abnormal. If the battery voltage drops to 5 V or less when starting the engine, the battery may be malfunctioning. If the battery voltage fluctuates while cranking the engine, it can be concluded that cranking is being performed. When the engine speed is 0 RPM, the crankshaft position sensor and/or an ECM may be malfunctioning. All engine speeds recorded in the freeze frame data are between 100 and 250 RPM (the engine cranks but there is no combustion). HINT: If the engine speed is between 100 and 250 RPM (no initial combustion), there may be a wiring problem or a complete failure of an ignition or fuel system part. Due to an engine coolant temperature sensor malfunction, the fuel injection volume is extremely high or low and the engine may not be able to be started. The engine speed recorded in the freeze frame data is 250 RPM or higher (the initial combustion and starter turnoff timing is too late). HINT: If the engine speed is 250 RPM or higher (combustion occurs but the initial combustion and starter turnoff timing is too late), the fuel injection volume is often incorrect (too low or too high) and determining the cause of the malfunction is often difficult. Due to an engine coolant temperature sensor malfunction, the fuel injection volume is extremely high or low and engine starting trouble may occur. If Long FT is incorrect, there may be a fuel supply problem due to the injectors or fuel pump being clogged, etc. If the engine cranking speed is too high, compression loss may have occurred due to carbon interfering with the valve operation. When the malfunction (starting difficulty) can be reproduced, or malfunction conditions are known, perform the following inspections ("Problem symptoms" and "Systems to inspect") Problem symptoms The engine does not crank. HINT: The starter is normal if a noise that indicates the starter pinion gear is extending is heard. The battery may be fully depleted or there may be excess engine friction. The engine cranking speed is abnormal. HINT: If the engine cranking speed is too high (for example, 300 RPM or higher with no combustion), compression loss may have occurred because carbon interfered with valve operation, etc. There is no initial combustion. HINT: If there is no initial combustion, there is probably a wiring problem or an ignition or fuel system part malfunction. The engine stalls after starter turnoff. HINT: If the engine stalls after starter turnoff, the air-fuel ratio may be incorrect or the VVT may have a problem returning. The initial combustion and starter turnoff occur late. HINT: If the initial combustion and starter turnoff occur late, the fuel injection volume is probably incorrect (too low or too high). HINT: Causes of fuel system malfunctions according to conditions present at the time of the malfunction. When 2 to 3 minutes have elapsed after stopping the engine: Fuel pressure loss due to the pressure regulator failing to maintain the fuel pressure. When 15 to 120 minutes have elapsed after stopping the engine: Problem with injector fuel seal. When a long time has elapsed after stopping the engine: Pressure regulator is stuck open. Systems to inspect. Air induction system Ignition system Fuel system
2. INSPECTION FLOW Freeze frame data exists, but the malfunction (starting difficulty) has not reoccurred and the malfunction conditions are unknown. Freeze Frame Data Item Result Suspected Area Procedure Engine Speed 0 RPM (no engine cranking at all) Battery fully depleted Engine assembly (excess friction) Starter Immobilizer system Crankshaft position sensor ECM 4 to 9 100 to 250 RPM (engine cranks but no initial combustion*1) Fuel pump control system Ignition system Engine coolant temperature sensor Fuel injection system 10 to 14 250 RPM or higher (combustion occurs but initial combustion and starter turnoff*2 occur late) Engine assembly (compression loss) Fuel injection system Fuel pump control system 15 to 23 HINT: *1: First combustion after cranking begins. *2: Condition when engine speed increases and starter can be turned off. When the malfunction (starting difficulty) can be reproduced, or when malfunction conditions are known. Problem symptoms Problem Symptom Suspected Area Suspected Component Procedure The engine does not crank Battery malfunction Battery fully depleted 26 to 31 Starting system Starter (includes pinion gear wear or tooth damage) Starting system Immobilizer system Immobilizer system Engine assembly Engine assembly (excess friction) Drive plate wear or tooth damage Cranking speed too low Battery malfunction Battery fully depleted 32 to 34 Starting system Starter Engine assembly Engine assembly (excess friction) Cranking speed too high Engine assembly Engine assembly (compression loss) There is no initial combustion Fuel supply problem Cannot maintain pressure due to pressure regulator malfunction Fuel injector leak Fuel leak from fuel line Fuel pump control system Fuel pump 35 to 50 Ignition system malfunction Spark plug Crankshaft position sensor Ignition coil Engine stalls after starter turnoff Air suction Air induction system connections 51 to 57 Deposits in throttle body Throttle body VVT valve does not return properly Camshaft oil control valve assembly Mass air flow meter malfunction Mass air flow meter The initial combustion and starter turnoff occur late Engine coolant temperature sensor malfunction Engine coolant temperature sensor 58 to 71 Mass air flow meter malfunction Mass air flow meter Abnormal A/F learning value Air fuel ratio sensor Deviation from fuel injection characteristics Fuel injector Wet-fouled or dry-fouled spark plug Spark plug Lack of fuel pressure Pressure regulator Fuel pump Fuel pump control system Systems to inspect. Troubleshooting by System Suspected Area Suspected Component Procedure Fuel system troubleshooting A Abnormal A/F learning value Fuel injector 87 to 94 95 to 102 Rough idling Crankshaft position sensor Abnormal fuel pressure Fuel Fuel leak from fuel line Fuel pump Pressure regulator Fuel system troubleshooting B Abnormal concentration of HC in surge tank Purge VSV system Fuel injector 103 to 105 Fuel system troubleshooting C Injection signal system malfunction Fuel injector Crankshaft position sensor Camshaft position sensor ECM 73 to 77 Air induction system troubleshooting Difference between ISC target value and opening angle when idling Engine assembly (compression loss) Valve timing Engine coolant temperature sensor ECM 84 to 86 106 to 108 Ignition system troubleshooting Camshaft and/or crankshaft position sensor signal malfunction Crankshaft position sensor system (including sensor installation) Camshaft position sensor system (including sensor installation) ECM 78 to 83 109 to 114

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1. CHECK ANY OTHER DTCS OUTPUT AND RECORD FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs and record the Freeze Frame Data. HINT: This freeze frame data shows the actual engine conditions when engine starting trouble occurred. When confirming the freeze frame data, be sure to check all 5 data sets of freeze frame data. The fourth set of freeze frame data is the data recorded when the DTC is stored. RESULT Result Proceed to Only DTC P1604 is output A DTCs other than P1604 are output B B --> See step 115 A: Go to next step
2. CHECK ENGINE IMMOBILIZER SYSTEM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Immobilizer Fuel Cut. Read the value displayed on the Techstream. OK Immobilizer Fuel Cut is OFF HINT: After reconnecting the battery cable, if the engine is started immediately (without waiting 1.8 seconds after turning the engine switch on (IG)), the engine will stop (due to the key verification process). The engine can be started after that. NG --> See step 116 OK: Go to next step
3. CHECK MALFUNCTION CONDITION Confirm the problem symptoms. RESULT Result Proceed to Freeze frame data exists, but the starting difficulty cannot be reproduced and it is unknown what kind of starting difficulty occurred A The problem symptoms can be reproduced, or the malfunction conditions are known B B --> See step 25 A: Go to next step
4. CHECK FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the engine switch on (IG). Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction) . Result Freeze Frame Data Item Suspected Area Proceed to Engine Speed Battery Voltage All 5 sets of freeze frame data are 0 RPM (no engine cranking at all) Minimum voltage is less than 5 V Battery fully depleted A Minimum voltage is 5 V or higher Starter malfunction Crankshaft position sensor system Excess engine friction Immobilizer system ECM B 60 to 250 RPM (engine cranks but no initial combustion) - Fuel pump control system Ignition system Engine coolant temperature sensor Immobilizer system Fuel injection system C 250 RPM or higher (combustion occurs but initial combustion and starter turnoff occur late) - Engine assembly Fuel injection system Fuel pump control system D HINT: When DTC P1604 is stored, either "Engine Start Hesitation"*1 or "Low Rev for Eng Start"*2 in the Freeze Frame Data will be ON. If "Low Rev for Eng Start" is ON, proceed to E. *1: This value turns ON when the engine speed does not reach a certain value for a certain period of time when starting the engine. *2: This value turns ON when the engine stalls immediately after starting the engine. If "Low Rev for Eng Start" is ON, as there is a possibility that the low engine speed or engine stall was caused by the user, confirm the following freeze frame data items. Immobilizer Fuel Cut Engine Speed (Starter Off) Shift SW Status (R, D Range) B --> See step 5 C --> See step 10 D --> See step 15 E --> See step 51 A --> CHARGE OR REPLACE BATTERY
5. CHECK FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the engine switch on (IG). Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction) . Result Freeze Frame Data Item Result Suspected Area Proceed to Battery Voltage Minimum voltage is 6 V or higher and voltage does not fluctuate*1 Starter system A Minimum voltage is 6 V or higher and voltage fluctuates*2, *3 Crankshaft position sensor system ECM B Minimum voltage is 5 to 6 V*4 Excess engine friction Battery fully depleted C HINT: *1: The 5 sets of freeze frame data show approximately the same battery voltage. *2: The 5 sets of freeze frame data show different battery voltages. *3: If the voltage fluctuates, it can be determined that cranking is being performed. When the engine speed is 0 RPM, the crankshaft position sensor system and/or the ECM may be malfunctioning. *4: There may be excess engine friction. Make sure that the crankshaft rotates smoothly when turning it by hand. Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts. B --> See step 6 C --> CHECK AND REPAIR ENGINE OR BATTERY A --> See step 130
6. CHECK SENSOR INSTALLATION Check the tightening and installation condition of the crankshaft position sensor bolt. Check the connection of the crankshaft position sensor connector. RESULT Result Proceed to Normal A Abnormal B B --> See step 118 A: Go to next step
7. CHECK CRANKSHAFT POSITION SENSOR Disconnect the crankshaft position sensor connector. Check for oil on the connector terminals. OK No oil on the terminals. NG --> See step 119 OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C1-1 (NE+) - C53-110 (NE+) Always Below 1 ohms C1-2 (NE-) - C53-111 (NE-) Always Below 1 ohms C1-3 (VC) - C53-66 (VCV2) Always Below 1 ohms C1-1 (NE+) or C53-110 (NE+) - Body ground Always 10 kohms or higher C1-2 (NE-) or C53-111 (NE-) - Body ground Always 10 kohms or higher C1-3 (VC) or C53-66 (VCV2) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 165 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
10. CHECK FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the engine switch on (IG). Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction) . Result Freeze Frame Data Item Suspected Area Proceed to Coolant Temp, Ambient Temp for A/C, Intake Air Coolant Temp, Ambient Temp for A/C Fuel Pump Duty Difference between Coolant Temp, Ambient Temp for A/C and Intake Air is 10°C or more*1 Coolant Temp is 125°C or more, or lower than Ambient Temp for A/C by 15°C or more - Engine coolant temperature sensor A Other than above All 5 sets of freeze frame data are except 0% - B At least 1 of the 5 sets of freeze frame data is 0% Fuel pump control system C Difference between Coolant Temp, Ambient Temp for A/C and Intake Air is less than 10°C*2 - At least 1 of the 5 sets of freeze frame data is 0% Fuel pump control system C All 5 sets of freeze frame data are except 0% - B HINT: *1: A long time had not elapsed after stopping the engine. *2: A long time had elapsed after stopping the engine. B --> See step 11 C --> See step 122 A --> See step 121
11. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for an operating sound from the fuel pump. Standard Control the Fuel Pump / Speed Specified Condition ON Operating sound heard OFF Operating sound not heard HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. NG --> See step 123 OK: Go to next step
12. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR POWER SOURCE) Disconnect the injector connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Cylinder Tester Connection Switch Condition Specified Condition No. 1 a5-2 - Body ground Engine switch on (IG) 11 to 14 V No. 2 a1-2 - Body ground Engine switch on (IG) 11 to 14 V No. 3 a6-2 - Body ground Engine switch on (IG) 11 to 14 V No. 4 a2-2 - Body ground Engine switch on (IG) 11 to 14 V No. 5 a7-2 - Body ground Engine switch on (IG) 11 to 14 V No. 6 a3-2 - Body ground Engine switch on (IG) 11 to 14 V No. 7 a8-2 - Body ground Engine switch on (IG) 11 to 14 V No. 8 a4-2 - Body ground Engine switch on (IG) 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> See step 178 OK: Go to next step
13. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. B --> See step 14 A --> REPAIR OR REPLACE FUEL LINE
14. CHECK FUEL SYSTEM Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter, and inside the fuel tank), and for signs that the fuel pump was stuck. RESULT Result Proceed to There is foreign matter or signs that fuel pump was stuck A There is no foreign matter and no signs that fuel pump was stuck B B --> See step 24 A --> REPAIR OR REPLACE FUEL SYSTEM
15. CHECK FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the engine switch on (IG). Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction) . Result Freeze Frame Data Item Suspected Area Proceed to Coolant Temp, Ambient Temp for A/C, Intake Air Coolant Temp, Ambient Temp for A/C Long FT #1, Long FT #2 Engine Speed Difference between Coolant Temp, Ambient Temp for A/C and Intake Air is 10°C or more Coolant Temp is 125°C or more, or lower than Ambient Temp for A/C by 15°C or more - - Engine coolant temperature sensor A Other than above -15% or less, or +15% or more - Fuel pump control system Fuel injector B -15 to +15% Minimum speed is 300 RPM or more*1 Engine assembly C Minimum speed is below 300 RPM Fuel system Air induction system D Difference between Coolant Temp, Ambient Temp for A/C and Intake Air is less than 10°C - -15% or less, or +15% or more - Fuel pump control system Fuel injector B -15 to +15% Minimum speed is 300 RPM or more*1 Engine assembly C Minimum speed is below 300 RPM Fuel system Air induction system D HINT: *1: Compression loss may have occurred in the engine assembly. B --> See step 16 C --> CHECK AND REPAIR ENGINE D --> See step 18 A --> See step 124
16. INSPECT FUEL INJECTOR Check that no carbon is stuck to the fuel injector. OK No carbon present. NG --> See step 125 OK: Go to next step
17. CHECK FUEL SYSTEM Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter, and inside the fuel tank), and for signs that the fuel pump was stuck. RESULT Result Proceed to There is foreign matter or signs that fuel pump was stuck A There is no foreign matter and no signs that fuel pump was stuck B B --> See step 24 A --> REPAIR OR REPLACE FUEL SYSTEM
18. CHECK FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the engine switch on (IG). Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction) . Result Freeze Frame Data Item Result Suspected Area Proceed to Coolant Temp Engine coolant temperature is 40°C or less*1 Pressure regulator A Engine coolant temperature is 40 to 90°C*2 Fuel injector B Engine coolant temperature is 90°C or more*3 Pressure regulator A HINT: *1: If the engine coolant temperature is 40°C or less (after stopping the engine and the vehicle is not driven for a long period of time), the pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine. *2: If the engine coolant temperature is 40 to 90°C (15 to 120 minutes have passed after stopping the engine), there may be fuel leaking from a fuel injector. *3: If the engine coolant temperature is 90°C or more (2 to 5 minutes have passed after stopping the engine), there may be a problem with the pressure regulator failing to maintain the fuel pressure. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine. B --> See step 20 A: Go to next step
19. CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures. Refer to «ON-VEHICLE INSPECTION - Step 2»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-inspection) . Attach a fuel pressure gauge and check the fuel pressure after stopping the engine. Standard 147 kPa (1.5 kgf/cm 2 ) or higher (5 minutes after stopping the engine) HINT: If the engine cannot be started, read the values after cranking the engine. RESULT Result Proceed to Normal A Abnormal B A --> See step 24 B --> See step 174
20. CHECK FUEL INJECTOR Clean the inside of the surge tank with compressed air. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes. Result Result Proceed to 4000 ppm or higher A Less than 4000 ppm B HINT: If the concentration is 4000 ppm or higher, a fuel injector may have a sealing problem. B --> See step 22 A: Go to next step
21. CHECK FUEL INJECTOR Inspect the fuel injectors. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information) . Result Result Proceed to Abnormal A Normal B B --> See step 22 A --> See step 175
22. CHECK THROTTLE BODY Check if carbon is in the air flow passage. Result Result Proceed to Carbon in passage A No carbon present B B --> See step 23 A --> See step 126
23. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leak. Refer to «ON-VEHICLE INSPECTION - Step 4»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-intake-system-3ur-fe-inspection) . OK No leak in air induction system. NG --> REPAIR OR REPLACE AIR INDUCTION SYSTEM OK: Go to next step
24. PERFORM SIMULATION TEST Check if the engine can be started. Result Result Proceed to Engine can be started A Engine cannot be started B B --> See step 25 A --> END
25. CONFIRM PROBLEM SYMPTOM Confirm the problem symptoms. HINT: The problem symptoms below can be determined by reading the freeze frame data. Result Problem Symptom Suspected Area Proceed to The engine does not crank Battery fully depleted Starter (includes pinion gear wear or teeth damage) Starter system Engine assembly (excess friction) Drive plate wear or teeth damage A Abnormal cranking speed Battery fully depleted Starter Engine assembly (excess friction, compression loss) B There is no initial combustion (combustion does not occur even once)*1 Pressure regulator fuel pressure maintenance Fuel injector leak Fuel leak from fuel line Fuel pump control system Fuel pump Spark plug Crankshaft position sensor system Ignition coil system C The engine stalls after starter turnoff (engine stalls immediately after the first time the engine speed increases)*2 Air induction system connections Throttle body Camshaft oil control valve Mass air flow meter system D The initial combustion and starter turnoff occur late*3 Engine coolant temperature sensor Mass air flow meter Air fuel ratio sensor Heated oxygen sensor Fuel injector Spark plug Pressure regulator Fuel pump Fuel pump control system E HINT: If there is hesitation (cranking speed is slow and combustion occurs before passing TDC) during the initial cranking period, the battery charge may be insufficient or the starter may be malfunctioning. *1: If there is no initial combustion, a wire harness may be malfunctioning, or the ignition or fuel system may be malfunctioning. *2: If the engine stalls after starter turnoff, the air-fuel ratio may be incorrect or the Camshaft oil control valve may have a problem returning. *3: If the initial combustion and starter turnoff occur late, the fuel injection volume may be incorrect (too low or too high). B --> See step 32 C --> See step 35 D --> See step 51 E --> See step 58 A: Go to next step
26. PERFORM SIMULATION TEST When cranking the engine, check for a noise indicating that the starter pinion gear is extending, and check that the starter pinion gear is not spinning freely. Result Problem Symptom Suspected Area Proceed to A noise indicating that the starter pinion gear is extending is heard and the starter pinion gear is not spinning freely.*1 Battery Excess engine friction Starter A A noise indicating that the starter pinion gear is extending is heard but the starter pinion gear is spinning freely. Drive plate Starter B A noise indicating that the starter pinion gear is extending is not heard Battery Starter Starter system C HINT: *1: The battery may be fully depleted or there may be excess engine friction. B --> See step 29 C --> See step 30 A: Go to next step
27. INSPECT BATTERY Inspect the battery. Refer to «ON-VEHICLE INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/charging-system/#charging-system-3ur-fe-inspection) . NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
28. CHECK ENGINE ASSEMBLY Check that the crankshaft rotates smoothly when rotating it by hand. OK Crankshaft rotates smoothly. HINT: Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts. NG --> REPAIR OR REPLACE ENGINE ASSEMBLY OK --> See step 127
29. CHECK STARTER Remove the starter. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/starter/#starting-system-3ur-fe-service-information) . Check for starter pinion gear wear and damage. Standard There is no wear or damage. NG --> See step 129 OK --> See step 128
30. INSPECT BATTERY Inspect the battery. Refer to «ON-VEHICLE INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/charging-system/#charging-system-3ur-fe-inspection) . NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
31. INSPECT STARTER Inspect the starter. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/starter/#starting-system-3ur-fe-service-information) . NG --> See step 131 OK --> See step 117
32. PERFORM SIMULATION TEST Check the cranking speed. Result Problem Symptom Suspected Area Proceed to Cranking speed is slow (100 RPM or less) Battery Starter Excess engine friction A Cranking speed is fast (300 RPM or more)*1 Engine compression loss B HINT: *1: If the cranking speed is fast, there may be compression loss. B --> CHECK AND REPAIR ENGINE A: Go to next step
33. INSPECT BATTERY Inspect the battery. Refer to «ON-VEHICLE INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/charging-system/#charging-system-3ur-fe-inspection) . NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
34. CHECK ENGINE Check that the crankshaft rotates smoothly when rotating it by hand. OK Crankshaft rotates smoothly. HINT: Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts. NG --> REPAIR OR REPLACE ENGINE OK --> See step 132
35. CHECK FUEL INJECTOR Using a sound scope or screwdriver, check for an injector operating noise while cranking the engine. OK Fuel injector operating noise is heard. NG --> See step 48 OK: Go to next step
36. CHECK FUEL PRESSURE Inspect the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-inspection) . NG --> See step 46 OK: Go to next step
37. CHECK SPARK PLUG AND SPARK Check for sparks. Refer to «ON-VEHICLE INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/ignition-system/#ignition-system-3ur-fe-inspection) . NG --> See step 41 OK: Go to next step
38. CONFIRM VEHICLE CONDITION Confirm the conditions present when the malfunction occurred based on the customer problem analysis. Result Problem Symptom Suspected Area Proceed to When the engine is stopped and a long time has passed, engine starting trouble occurs*1 Pressure regulator is stuck open A When the engine is stopped and approximately 15 to 120 minutes have passed, engine starting trouble occurs*2 Fuel injector leak B When the engine is stopped and approximately 2 to 3 minutes have passed, engine starting trouble occurs*3 Failure to maintain fuel pressure by pressure regulator A Condition other than above, or there is an inconsistency in the conditions present when engine starting trouble occurs - C*4 HINT: *1: The pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine. *2: Fuel may be leaking from a fuel injector. *3: The pressure regulator may not be able to maintain the fuel pressure. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine. *4: From step 72, perform fuel system troubleshooting C (steps 73 to 77). B --> See step 40 C --> See step 72 A: Go to next step
39. CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures. Refer to «ON-VEHICLE INSPECTION - Step 2»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-inspection) . Attach a fuel pressure gauge and check the fuel pressure after stopping the engine. Result Result Proceed to 147 kPa (1.5 kgf/cm2) or higher (5 minutes after stopping the engine) A*1 Less than 147 kPa (1.5 kgf/cm2) (5 minutes after stopping the engine) B HINT: If the engine cannot be started, check the fuel pressure after cranking the engine. *1: From step 72, perform fuel system troubleshooting C (steps 73 to 77). A --> See step 72 B --> See step 133
40. CHECK FUEL INJECTOR After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes. Result Result Proceed to 4000 ppm or higher A Less than 4000 ppm B*1 HINT: If the concentration is 4000 ppm or higher, a fuel injector may have a sealing problem. *1: From step 72, perform fuel system troubleshooting C (steps 73 to 77). B --> See step 72 A --> See step 134
41. CHECK SPARK PLUG Inspect the spark plugs. Refer to «ON-VEHICLE INSPECTION - Step 3»(/toyota/land-cruiser/200-2012-2015/remont/ignition-system/#ignition-system-3ur-fe-inspection) . HINT: Even if the spark plug of only one cylinder is malfunctioning, replace the spark plugs of all cylinders. NG --> See step 135 OK: Go to next step
42. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed. Start the engine. While running the engine, read the value of Engine Speed. Standard A value that matches the actual engine speed is constantly output. HINT: Check the engine speed using a line graph. If the engine cannot be started, check the engine speed while cranking the engine. If the engine speed is 0 RPM, the crankshaft position sensor may have an open or short circuit. NG --> See step 136 OK: Go to next step
43. CHECK HARNESS AND CONNECTOR (IGNITION COIL POWER SOURCE) Disconnect the ignition coil with igniter connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C5-1 (+B) - C5-4 (GND) Engine switch on (IG) 11 to 14 V C13-1 (+B) - C13-4 (GND) Engine switch on (IG) 11 to 14 V C6-1 (+B) - C6-4 (GND) Engine switch on (IG) 11 to 14 V C12-1 (+B) - C12-4 (GND) Engine switch on (IG) 11 to 14 V C7-1 (+B) - C7-4 (GND) Engine switch on (IG) 11 to 14 V C11-1 (+B) - C11-4 (GND) Engine switch on (IG) 11 to 14 V C8-1 (+B) - C8-4 (GND) Engine switch on (IG) 11 to 14 V C10-1 (+B) - C10-4 (GND) Engine switch on (IG) 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> See step 137 OK: Go to next step
44. CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM) Disconnect the ignition coil with igniter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C5-2 (IGF1) - C53-104 (IGF1) Always Below 1 ohms C13-2 (IGF2) - C53-105 (IGF2) Always Below 1 ohms C6-2 (IGF2) - C53-105 (IGF2) Always Below 1 ohms C12-2 (IGF1) - C53-104 (IGF1) Always Below 1 ohms C7-2 (IGF2) - C53-105 (IGF2) Always Below 1 ohms C11-2 (IGF1) - C53-104 (IGF1) Always Below 1 ohms C8-2 (IGF1) - C53-104 (IGF1) Always Below 1 ohms C10-2 (IGF2) - C53-105 (IGF2) Always Below 1 ohms C5-2 (IGF1) or C53-104 (IGF1) - Body ground Always 10 kohms or higher C13-2 (IGF2) or C53-105 (IGF2) - Body ground Always 10 kohms or higher C6-2 (IGF2) or C53-105 (IGF2) - Body ground Always 10 kohms or higher C12-2 (IGF1) or C53-104 (IGF1) - Body ground Always 10 kohms or higher C7-2 (IGF2) or C53-105 (IGF2) - Body ground Always 10 kohms or higher C11-2 (IGF1) or C53-104 (IGF1) - Body ground Always 10 kohms or higher C8-2 (IGF1) or C53-104 (IGF1) - Body ground Always 10 kohms or higher C10-2 (IGF2) or C53-105 (IGF2) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
45. CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM) Disconnect the ignition coil with igniter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C5-3 (IGT1) - C53-40 (IGT1) Always Below 1 ohms C13-3 (IGT2) - C53-33 (IGT2) Always Below 1 ohms C6-3 (IGT3) - C53-37 (IGT3) Always Below 1 ohms C12-3 (IGT4) - C53-34 (IGT4) Always Below 1 ohms C7-3 (IGT5) - C53-35 (IGT5) Always Below 1 ohms C11-3 (IGT6) - C53-36 (IGT6) Always Below 1 ohms C8-3 (IGT7) - C53-38 (IGT7) Always Below 1 ohms C10-3 (IGT8) - C53-39 (IGT8) Always Below 1 ohms C5-3 (IGT1) or C53-40 (IGT1) - Body ground Always 10 kohms or higher C13-3 (IGT2) or C53-33 (IGT2) - Body ground Always 10 kohms or higher C6-3 (IGT3) or C53-37 (IGT3) - Body ground Always 10 kohms or higher C12-3 (IGT4) or C53-34 (IGT4) - Body ground Always 10 kohms or higher C7-3 (IGT5) or C53-35 (IGT5) - Body ground Always 10 kohms or higher C11-3 (IGT6) or C53-36 (IGT6) - Body ground Always 10 kohms or higher C8-3 (IGT7) or C53-38 (IGT7) - Body ground Always 10 kohms or higher C10-3 (IGT8) or C53-39 (IGT8) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. If the wire harness is normal, after replacing the ignition coil, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 72 and perform troubleshooting for the ignition system (steps 78 to 83). NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 138
46. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for an operating sound from the fuel pump. Standard Control the Fuel Pump / Speed Specified Condition ON Operating sound heard OFF Operating sound not heard HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. NG --> See step 139 OK: Go to next step
47. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. If there are no fuel leaks, after inspecting the fuel pump control system, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 72 and perform fuel system troubleshooting (steps 73 to 77). B --> See step 140 A --> REPAIR OR REPLACE FUEL LINE
48. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed. Start the engine. While running the engine, read the value of Engine Speed. Standard A value that matches the actual engine speed is constantly output. HINT: Check the engine speed using a line graph. If the engine cannot be started, check the engine speed while cranking the engine. If the engine speed is 0 RPM, the crankshaft position sensor may have an open or short circuit. NG --> See step 141 OK: Go to next step
49. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR POWER SOURCE) Disconnect the injector connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Cylinder Tester Connection Switch Condition Specified Condition No. 1 a5-2 - Body ground Engine switch on (IG) 11 to 14 V No. 2 a1-2 - Body ground Engine switch on (IG) 11 to 14 V No. 3 a6-2 - Body ground Engine switch on (IG) 11 to 14 V No. 4 a2-2 - Body ground Engine switch on (IG) 11 to 14 V No. 5 a7-2 - Body ground Engine switch on (IG) 11 to 14 V No. 6 a3-2 - Body ground Engine switch on (IG) 11 to 14 V No. 7 a8-2 - Body ground Engine switch on (IG) 11 to 14 V No. 8 a4-2 - Body ground Engine switch on (IG) 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> See step 179 OK: Go to next step
50. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR - ECM) Disconnect the injector connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Cylinder Tester Connection Condition Specified Condition No. 1 a5-1 - Body ground Always 10 kohms or higher a5-1 - C53-86 (#10) Always Below 1 ohms No. 2 a1-1 - Body ground Always 10 kohms or higher a1-1 - C53-109 (#20) Always Below 1 ohms No. 3 a6-1 - Body ground Always 10 kohms or higher a6-1 - C53-85 (#30) Always Below 1 ohms No. 4 a2-1 - Body ground Always 10 kohms or higher a2-1 - C53-108 (#40) Always Below 1 ohms No. 5 a7-1 - Body ground Always 10 kohms or higher a7-1 - C53-84 (#50) Always Below 1 ohms No. 6 a3-1 - Body ground Always 10 kohms or higher a3-1 - C53-107 (#60) Always Below 1 ohms No. 7 a8-1 - Body ground Always 10 kohms or higher a8-1 - C53-83 (#70) Always Below 1 ohms No. 8 a4-1 - Body ground Always 10 kohms or higher a4-1 - C53-106 (#80) Always Below 1 ohms HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 120
51. CHECK MASS AIR FLOW METER Connect the Techstream to the DLC3. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher. HINT: The A/C switch and all accessory switches should be off, and the shift lever should be in N or P. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / MAF. Check MAF in the Data List during idling. Standard 4.0 to 8.0 gm/s NG --> See step 57 OK: Go to next step
52. CHECK AIR INDUCTION SYSTEM Check for air leakage in the air induction system [vacuum hose disconnection, cracks, damaged gaskets, etc.]. Refer to «ON-VEHICLE INSPECTION - Step 4»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-intake-system-3ur-fe-inspection) . HINT: If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake manifold increases and the air suction noise becomes louder. If Short FT and Long FT are largely different from the normal values (differ by more than 15%) when idling (intake air volume is small) and almost the same as the normal values when racing the engine (for example, when maintaining a speed of 3000 RPM) (intake air volume is high), air leakage may be present. Standard There is no air leakage. NG --> REPAIR OR REPLACE AIR INDUCTION SYSTEM OK: Go to next step
53. CHECK THROTTLE BODY Disconnect the throttle body connector. HINT: When the connector is disconnected, the vehicle enters fail-safe mode and the throttle valve opening angle is 4 to 7°. Crank the engine and check that it starts. Result Result Proceed to Engine starts A Engine does not start B Connect the throttle body connector. HINT: When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . B --> See step 55 A: Go to next step
54. CHECK THROTTLE BODY Check if carbon is in the air flow passage. Standard No carbon present. NG --> REMOVE FOREIGN OBJECT AND CLEAN THROTTLE BODY OK: Go to next step
55. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT SYSTEM) Connect the Techstream to the DLC3. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1) or Control the VVT System (Bank 2). HINT: When performing the Active Test, make sure the A/C is on and the shift lever is in P or N. Check the engine speed while operating the camshaft oil control valve using the Techstream. OK*1 Tester Operation Specified Condition OFF Normal engine speed ON Soon after OCV switched from OFF to ON, engine idles roughly or stalls HINT: *1: From step 72, perform air induction system troubleshooting (steps 84 to 86). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 87 to 94). Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems. If the Camshaft oil control valve assembly is stuck ON, the valve overlap increases and combustion worsens due to the internal EGR which may cause the engine to stall. NG --> See step 143 OK: Go to next step
56. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT EXHAUST LINEAR) Connect the Techstream to the DLC3. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank1) or Control the VVT Exhaust Linear (Bank2). HINT: When performing the Active Test, make sure the A/C is on and the shift lever is in P or N. Check the engine speed while operating the camshaft oil control valve using the Techstream. OK*1 Tester Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls HINT: *1: From step 72, perform air induction system troubleshooting (steps 84 to 86). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 87 to 94). Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems. If the Camshaft oil control valve assembly is stuck ON, the valve overlap increases and combustion worsens due to the internal EGR which may cause the engine to stall. OK --> See step 72 NG --> See step 182
57. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the MAF meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-3 (VG) - C53-74 (VG) Always Below 1 ohms C3-2 (E2G) - C53-75 (E2G) Always Below 1 ohms C3-3 (VG) or C53-74 (VG) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. If the wire harness is normal, after replacing the mass air flow meter, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 72 and perform air induction system troubleshooting (steps 84 to 86). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 87 to 94). NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 144
58. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . HINT: If the engine coolant temperature sensor is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), air induction system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order. NG --> See step 145 OK: Go to next step
59. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Disconnect the ECT sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C15-2 - C53-76 (THW) Always Below 1 ohms C15-1 - C53-97 (ETHW) Always Below 1 ohms C15-2 or C53-76 (THW) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. If the wire harness or connector is malfunctioning, after replacing or repairing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), air induction system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
60. CHECK MASS AIR FLOW METER Connect the Techstream to the DLC3. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher. HINT: The A/C switch and all accessory switches should be off, and the shift lever should be in N or P. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / MAF. Check MAF in the Data List during idling. Standard 4.0 to 8.0 gm/s HINT: If the mass air flow meter is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), air induction system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order. NG --> See step 146 OK: Go to next step
61. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the MAF meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-3 (VG) - C53-74 (VG) Always Below 1 ohms C3-2 (E2G) - C53-75 (E2G) Always Below 1 ohms C3-3 (VG) or C53-74 (VG) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. If the wire harness or connector is malfunctioning, after replacing or repairing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), air induction system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
62. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Long FT and Atmosphere Pressure. Result Data List Item Result Suspected Area Proceed to Long FT #1 Long FT #2 +25% or more or less than -25% Air fuel ratio sensor Heated oxygen sensor Mass air flow meter Fuel injector ECM A Atmosphere Pressure 80 kPa or less (when altitude is 0 m) Both Data List items listed above Values are other than above - B B --> See step 66 A: Go to next step
63. PERFORM SIMULATION TEST Remove the EFI MAIN and ETCS fuses from the engine room relay block. After 60 seconds or more elapse, install the EFI MAIN and ETCS fuses. Check if the engine can be started. RESULT Result Proceed to Engine can be started A Engine cannot be started B B --> See step 66 A: Go to next step
64. INSPECT AIR FUEL RATIO SENSOR Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Fuel System Status #1 and Fuel System Status #2. Confirm that Fuel System Status #1 and Fuel System Status #2 are both CL. Enter the following menus: Powertrain / Engine and ECT / Data List / AF Lambda B1S1 and AF Lambda B2S1. Confirm that AF Lambda B1S1 and AF Lambda B2S1 are both within the range of 0.95 to 1.05 when idling. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume. Standard Tester Display Injection Volume Specified Condition AFS Voltage B1S1 AFS Voltage B2S1 +12.5% Air fuel ratio sensor output voltage is below 3.1 V -12.5% Air fuel ratio sensor output voltage is higher than 3.4 V RESULT Result Proceed to Normal A Abnormal B HINT: The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. If the air fuel ratio sensor is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), air induction system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order. B --> See step 147 A: Go to next step
65. PERFORM SIMULATION TEST Check if the idling speed is stable after starting the engine. OK Speed is stable. HINT: After replacing the fuel injector or mass air flow meter, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), air induction system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order. NG --> See step 149 OK --> See step 148
66. CHECK FUEL PRESSURE Inspect the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-inspection) . NG --> See step 71 OK: Go to next step
67. CHECK SPARK PLUG Inspect the spark plugs. Refer to «ON-VEHICLE INSPECTION - Step 3»(/toyota/land-cruiser/200-2012-2015/remont/ignition-system/#ignition-system-3ur-fe-inspection) . RESULT Result Proceed to All cylinders are normal A One cylinder is abnormal*1 B All cylinders are abnormal*2, *3 C HINT: *1: If one cylinder is abnormal, replace the spark plug of that cylinder and inspect the ignition and fuel system for that cylinder. After performing repairs, check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), air induction system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order. *2: If all cylinders are abnormal, replace the spark plugs of all cylinders and check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), air induction system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order. *3: Engine starting trouble may occur if the vehicle is driven extremely short distances repeatedly. B --> See step 150 C --> See step 151 A: Go to next step
68. CONFIRM VEHICLE CONDITION Confirm the conditions present when the malfunction occurred based on the customer problem analysis. Result Problem Symptom Suspected Area Proceed to When the engine is stopped and a long time has passed, engine starting trouble occurs*1 Pressure regulator is stuck open A When the engine is stopped and approximately 15 to 120 minutes have passed, engine starting trouble occurs*2 Fuel injector leak B When the engine is stopped and approximately 2 to 3 minutes have passed, engine starting trouble occurs*3 Failure to maintain fuel pressure by pressure regulator A Condition other than above, or there is an inconsistency in the conditions present when engine starting trouble occurs - C*4 HINT: *1: The pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine. *2: Fuel may be leaking from a fuel injector. *3: The pressure regulator may not be able to maintain the fuel pressure. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine. *4: From step 72, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), air induction system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order. B --> See step 70 C --> See step 72 A: Go to next step
69. CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures. Refer to «ON-VEHICLE INSPECTION - Step 2»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-inspection) . Attach a fuel pressure gauge and check the fuel pressure after stopping the engine. Result Result Proceed to 147 kPa (1.5 kgf/cm2) or higher (5 minutes after stopping the engine) A*1 Less than 147 kPa (1.5 kgf/cm2) (5 minutes after stopping the engine) B HINT: If the engine cannot be started, check the fuel pressure after cranking the engine. *1: From step 72, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), air induction system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order. A --> See step 72 B --> See step 152
70. CHECK FUEL INJECTOR Clean the inside of the surge tank with compressed air. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes. Result Result Proceed to 4000 ppm or higher A Less than 4000 ppm B*1 HINT: If the concentration is 4000 ppm or higher, a fuel injector may have a sealing problem. *1: From step 72, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), air induction system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order. B --> See step 72 A --> See step 153
71. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. If there are no fuel leaks, after inspecting the fuel pump control system, check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), air induction system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order. B --> See step 154 A --> REPAIR OR REPLACE FUEL LINE
72. CHECK MALFUNCTION CONDITION If the malfunction could not be identified during the inspection in steps 38, 39, 40 and 47, perform fuel system troubleshooting C (steps 73 to 77). Result Performed Step Troubleshooting by System Procedure Proceed to Steps 38, 39, 40 and 47 Fuel system troubleshooting C 73 to 77 A If the malfunction could not be identified during the inspection in step 45, perform ignition system troubleshooting (steps 78 to 83). Result Performed Step Troubleshooting by System Procedure Proceed to Step 45 Ignition system troubleshooting 78 to 83 B If the malfunction could not be identified during the inspection in steps 55, 56 and 57, perform air induction air system troubleshooting (steps 84 to 86). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 87 to 94). Result Performed Step Troubleshooting by System Procedure Proceed to Step 55, 56 and 57 Air induction system troubleshooting 84 to 86 C Fuel system troubleshooting A 87 to 94 If the malfunction could not be identified during the inspection in steps 58, 59, 60, 61, 64, 65, 67, 68, 69, 70 and 71, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), air induction system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order. Result Performed Step Troubleshooting by System Procedure Proceed to Steps 58, 59, 60, 61, 64, 65, 67, 68, 69, 70 and 71 Fuel system troubleshooting A 95 to 102 D Fuel system troubleshooting B 103 to 105 Air induction system troubleshooting 106 to 108 Ignition system troubleshooting 109 to 114 B --> See step 78 C --> See step 84 D --> See step 95 A: Go to next step
73. INSPECT FUEL INJECTOR Inspect the fuel injectors. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information) . NG --> See step 180 OK: Go to next step
74. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR POWER SOURCE) Disconnect the injector connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Cylinder Tester Connection Switch Condition Specified Condition No. 1 a5-2 - Body ground Engine switch on (IG) 11 to 14 V No. 2 a1-2 - Body ground Engine switch on (IG) 11 to 14 V No. 3 a6-2 - Body ground Engine switch on (IG) 11 to 14 V No. 4 a2-2 - Body ground Engine switch on (IG) 11 to 14 V No. 5 a7-2 - Body ground Engine switch on (IG) 11 to 14 V No. 6 a3-2 - Body ground Engine switch on (IG) 11 to 14 V No. 7 a8-2 - Body ground Engine switch on (IG) 11 to 14 V No. 8 a4-2 - Body ground Engine switch on (IG) 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> See step 181 OK: Go to next step
75. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR - ECM) Disconnect the injector connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Cylinder Tester Connection Condition Specified Condition No. 1 a5-1 - Body ground Always 10 kohms or higher a5-1 - C53-86 (#10) Always Below 1 ohms No. 2 a1-1 - Body ground Always 10 kohms or higher a1-1 - C53-109 (#20) Always Below 1 ohms No. 3 a6-1 - Body ground Always 10 kohms or higher a6-1 - C53-85 (#30) Always Below 1 ohms No. 4 a2-1 - Body ground Always 10 kohms or higher a2-1 - C53-108 (#40) Always Below 1 ohms No. 5 a7-1 - Body ground Always 10 kohms or higher a7-1 - C53-84 (#50) Always Below 1 ohms No. 6 a3-1 - Body ground Always 10 kohms or higher a3-1 - C53-107 (#60) Always Below 1 ohms No. 7 a8-1 - Body ground Always 10 kohms or higher a8-1 - C53-83 (#70) Always Below 1 ohms No. 8 a4-1 - Body ground Always 10 kohms or higher a4-1 - C53-106 (#80) Always Below 1 ohms HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
76. CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 77 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
77. CHECK CAMSHAFT POSITION SENSOR Replace the camshaft position sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 162 OK --> END (CAMSHAFT POSITION SENSOR IS DEFECTIVE)
78. CHECK CRANKSHAFT POSITION SENSOR Check the tightening and installation condition of the crankshaft position sensor bolt. Check the connection of the crankshaft position sensor connector. OK Sensor is installed correctly. NG --> See step 156 OK: Go to next step
79. CHECK CAMSHAFT POSITION SENSOR Check the tightening and installation condition of the camshaft position sensor bolt. Check the connection of the camshaft position sensor connector. OK Sensor is installed correctly. NG --> See step 157 OK: Go to next step
80. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C1-1 (NE+) - C53-110 (NE+) Always Below 1 ohms C1-2 (NE-) - C53-111 (NE-) Always Below 1 ohms C1-3 (VC) - C53-66 (VCV2) Always Below 1 ohms C1-1 (NE+) or C53-110 (NE+) - Body ground Always 10 kohms or higher C1-2 (NE-) or C53-111 (NE-) - Body ground Always 10 kohms or higher C1-3 (VC) or C53-66 (VCV2) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
81. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Disconnect the camshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C2-1 (G2) - C53-90 (G2) Always Below 1 ohms C2-2 (G-) - C53-89 (G2-) Always Below 1 ohms C2-3 (VC) - C53-66 (VCV2) Always Below 1 ohms C2-1 (G2) or C53-90 (G2) - Body ground Always 10 kohms or higher C2-2 (G-) or C53-89 (G2-) - Body ground Always 10 kohms or higher C2-3 (VC) or C53-66 (VCV2) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
82. CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 83 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
83. CHECK CAMSHAFT POSITION SENSOR Replace the camshaft position sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 158 OK --> END (CAMSHAFT POSITION SENSOR IS DEFECTIVE)
84. READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Start the engine and warm it up until the engine coolant temperature stabilizes with the A/C switch and all the accessory switches should be off Enter the following menus: Powertrain / Engine and ECT / Data List / ISC Learning Value. Result Data List Item Result Suspected Area Proceed to ISC Learning Value (engine displacement (liters) x 0.9) or more Valve timing Compression A Less than (engine displacement (liters) x 0.9) - B B --> See step 86 A: Go to next step
85. CHECK CYLINDER COMPRESSION PRESSURE Inspect the compression. Refer to «ON-VEHICLE INSPECTION - Step 3»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information) . NG --> REPAIR OR REPLACE ENGINE ASSEMBLY OK --> CHECK VALVE TIMING
86. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NG --> See step 159 OK: Go to next step
87. CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures. Refer to «ON-VEHICLE INSPECTION - Step 2»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-inspection) . Attach a fuel pressure gauge and check the fuel pressure when cranking the engine and after stopping the engine. Result Vehicle State Specified Condition Cranking engine 270 to 430 kPa (2.75 to 4.38 kgf/cm 2 ) 5 minutes after stopping engine 147 kPa (1.5 kgf/cm 2 ) or more NG --> See step 93 OK: Go to next step
88. READ VALUE USING TECHSTREAM (LONG FT) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Long FT #1 and Long FT #2. Result Data List Item Result Suspected Area Proceed to Long FT #1 Long FT #2 -15 to +15% Wire harness or connector Fuel A +15% or more, or less than -15% Fuel injector B B --> See step 160 A: Go to next step
89. PERFORM SIMULATION TEST Check if the idling speed after starting the engine is currently stable and has always been stable in the past. Result Problem Symptom Suspected Area Proceed to Current unstable idling speed or history of unstable idling speed Crankshaft position sensor system A All current and past idling speeds are stable Fuel B HINT: Through the customer problem analysis, confirm the fuel being used and the location at which the fuel was added to check if the malfunction is caused by the fuel in the vehicle. B --> REPLACE FUEL A: Go to next step
90. CHECK CRANKSHAFT POSITION SENSOR Check the tightening and installation condition of the crankshaft position sensor bolt. Check the connection of the crankshaft position sensor connector. OK Sensor is installed correctly. NG --> See step 161 OK: Go to next step
91. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C1-1 (NE+) - C53-110 (NE+) Always Below 1 ohms C1-2 (NE-) - C53-111 (NE-) Always Below 1 ohms C1-3 (VC) - C53-66 (VCV2) Always Below 1 ohms C1-1 (NE+) or C53-110 (NE+) - Body ground Always 10 kohms or higher C1-2 (NE-) or C53-111 (NE-) - Body ground Always 10 kohms or higher C1-3 (VC) or C53-66 (VCV2) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
92. CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 155 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
93. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. B --> See step 94 A --> REPAIR OR REPLACE FUEL LINE
94. INSPECT FUEL PUMP Inspect the fuel pump. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information) . HINT: Make sure there is no foreign matter such as iron particles on the fuel pump and no signs that the fuel pump was stuck. Make sure the internal connector is securely connected. Make sure the fuel pump filter is not clogged. NG --> See step 166 OK --> See step 163
95. CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures. Refer to «ON-VEHICLE INSPECTION - Step 2»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-inspection) . Attach a fuel pressure gauge and check the fuel pressure after stopping the engine. Result Result Proceed to 147 kPa (1.5 kgf/cm 2 ) or higher (5 minutes after stopping the engine) A Less than 147 kPa (1.5 kgf/cm 2 ) (5 minutes after stopping the engine) B B --> See step 101 A: Go to next step
96. READ VALUE USING TECHSTREAM (LONG FT) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Long FT #1 and Long FT #2. Result Data List Item Result Suspected Area Proceed to Long FT #1 Long FT #2 -15 to +15% Wire harness or connector Fuel A +15% or more, or less than -15% Fuel injector B B --> See step 173 A: Go to next step
97. PERFORM SIMULATION TEST Check if the idling speed after starting the engine is currently stable and has always been stable in the past. RESULT Problem Symptom Suspected Area Proceed to Current unstable idling speed or history of unstable idling speed Crankshaft position sensor system A All current and past idling speeds are stable Fuel B HINT: Through the customer problem analysis, confirm the fuel being used and the location at which the fuel was added to check if the malfunction is caused by the fuel in the vehicle. B --> REPLACE FUEL A: Go to next step
98. CHECK CRANKSHAFT POSITION SENSOR Check the tightening and installation condition of the crankshaft position sensor bolt. Check the connection of the crankshaft position sensor connector. OK Sensor is installed correctly. NG --> See step 164 OK: Go to next step
99. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C1-1 (NE+) - C53-110 (NE+) Always Below 1 ohms C1-2 (NE-) - C53-111 (NE-) Always Below 1 ohms C1-3 (VC) - C53-66 (VCV2) Always Below 1 ohms C1-1 (NE+) or C53-110 (NE+) - Body ground Always 10 kohms or higher C1-2 (NE-) or C53-111 (NE-) - Body ground Always 10 kohms or higher C1-3 (VC) or C53-66 (VCV2) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
100. CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 142 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
101. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. B --> See step 102 A --> REPAIR OR REPLACE FUEL LINE
102. INSPECT FUEL PUMP Inspect the fuel pump. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information) . HINT: Make sure there is no foreign matter such as iron particles on the fuel pump and no signs that the fuel pump was stuck. Make sure the internal connector is securely connected. Make sure the fuel pump filter is not clogged. NG --> See step 176 OK: Go to next step
103. CHECK PURGE VSV Disconnect the vacuum hose (on the canister side) of the purge VSV. Start the engine. Idle the engine. Disconnect the connector of the purge VSV. Check if air flows through the purge VSV. Standard Air does not flow Connect the connector of the purge VSV. Connect the vacuum hose of the purge VSV. HINT: When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . NG --> See step 167 OK: Go to next step
104. CHECK FUEL INJECTOR Clean the inside of the surge tank with compressed air. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes. Result Result Proceed to 4000 ppm or higher A Less than 4000 ppm B HINT: If the concentration is 4000 ppm or higher, a fuel injector may have a sealing problem. B --> See step 105 A --> See step 168
105. CHECK INTAKE VALVE Check if carbon is on the intake valves. Result Result Proceed to Carbon present A No carbon present B B --> See step 106 A --> CLEAN INTAKE VALVE
106. READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes. Enter the following menus: Powertrain / Engine and ECT / Data List / ISC Learning Value. Result Data List Item Result Suspected Area Proceed to ISC Learning Value (engine displacement (liters) x 0.9) or more Valve timing Compression A Less than (engine displacement (liters) x 0.9) - B B --> See step 108 A: Go to next step
107. CHECK CYLINDER COMPRESSION PRESSURE Inspect the compression. Refer to «ON-VEHICLE INSPECTION - Step 3»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information) . NG --> REPAIR OR REPLACE ENGINE ASSEMBLY OK --> See step 169
108. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NG --> See step 170 OK: Go to next step
109. CHECK CRANKSHAFT POSITION SENSOR Check the tightening and installation condition of the crankshaft position sensor bolt. Check the connection of the crankshaft position sensor connector. OK Sensor is installed correctly. NG --> See step 171 OK: Go to next step
110. CHECK CAMSHAFT POSITION SENSOR Check the tightening and installation condition of the camshaft position sensor bolt. Check the connection of the camshaft position sensor connector. OK Sensor is installed correctly. NG --> See step 172 OK: Go to next step
111. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C1-1 (NE+) - C53-110 (NE+) Always Below 1 ohms C1-2 (NE-) - C53-111 (NE-) Always Below 1 ohms C1-3 (VC) - C53-66 (VCV2) Always Below 1 ohms C1-1 (NE+) or C53-110 (NE+) - Body ground Always 10 kohms or higher C1-2 (NE-) or C53-111 (NE-) - Body ground Always 10 kohms or higher C1-3 (VC) or C53-66 (VCV2) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
112. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Disconnect the camshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C2-1 (G2) - C53-90 (G2) Always Below 1 ohms C2-2 (G-) - C53-89 (G2-) Always Below 1 ohms C2-3 (VC) - C53-66 (VCV2) Always Below 1 ohms C2-1 (G2) or C53-90 (G2) - Body ground Always 10 kohms or higher C2-2 (G-) or C53-89 (G2-) - Body ground Always 10 kohms or higher C2-3 (VC) or C53-66 (VCV2) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
113. CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 114 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
114. CHECK CAMSHAFT POSITION SENSOR Replace the camshaft position sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 177 OK --> END (CAMSHAFT POSITION SENSOR IS DEFECTIVE)
115. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
116. REPAIR ENGINE IMMOBILIZER SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/land-cruiser/200-2012-2015/remont/door-locks-anti-theft-systems/#engine-immobiliser-system-diagnostics-introduction__how-to-proceed-with-troubleshooting)
117. CHECK CRANKING HOLDING FUNCTION CIRCUIT. Refer to «Cranking Holding Function Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
118. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
119. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
120. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
121. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
122. CHECK FUEL PUMP CONTROL SYSTEM. Refer to «Fuel Pump Control Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
123. REPAIR FUEL PUMP CONTROL SYSTEM. Refer to «Fuel Pump Control Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
124. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
125. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information__removal)
126. CLEAN OR REPLACE THROTTLE BODY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
127. INSPECT STARTER. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/starter/#starting-system-3ur-fe-service-information)
128. REPLACE DRIVE PLATE AND RING GEAR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information)
129. REPLACE STARTER. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/starter/#starting-system-3ur-fe-service-information)
130. CHECK CRANKING HOLDING FUNCTION CIRCUIT. Refer to «Cranking Holding Function Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
131. REPLACE STARTER. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/starter/#starting-system-3ur-fe-service-information)
132. INSPECT STARTER. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/starter/#starting-system-3ur-fe-service-information)
133. REPLACE PRESSURE REGULATOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information)
134. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information__removal)
135. REPLACE SPARK PLUG. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
136. CHECK CRANKSHAFT POSITION SENSOR CIRCUIT. Refer to «DTC P0335: Crankshaft Position Sensor "A" Circuit; DTC P0337: Crankshaft Position Sensor "A" Circuit Low Input; DTC P0338: Crankshaft Position Sensor "A" Circuit High Input; DTC P0339: Crankshaft Position Sensor "A" Circuit Intermittent»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostic-codes-p0010-p0415)
137. CHECK POWER SOURCE CIRCUIT. Refer to «DTC P0351: Ignition Coil "A" Primary / Secondary Circuit; DTC P0352: Ignition Coil "B" Primary / Secondary Circuit; DTC P0353: Ignition Coil "C" Primary / Secondary Circuit; DTC P0354: Ignition Coil "D" Primary / Secondary Circuit; DTC P0355: Ignition Coil "E" Primary / Secondary Circuit; DTC P0356: Ignition Coil "F" Primary / Secondary Circuit; DTC P0357: Ignition Coil "G" Primary / Secondary Circuit; DTC P0358: Ignition Coil "H" Primary / Secondary Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostic-codes-p0010-p0415)
138. REPLACE IGNITION COIL. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
139. CHECK FUEL PUMP CONTROL SYSTEM. Refer to «Fuel Pump Control Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
140. CHECK FUEL PUMP CONTROL SYSTEM. Refer to «Fuel Pump Control Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
141. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
142. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
143. REPLACE CAMSHAFT OIL CONTROL VALVE (for Intake Side). Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information__removal)
144. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
145. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
146. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
147. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
148. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
149. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information__removal)
150. REPLACE SPARK PLUG (ABNORMAL CYLINDER). Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
151. REPLACE SPARK PLUG (ALL CYLINDER). Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
152. REPLACE PRESSURE REGULATOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information)
153. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information__removal)
154. CHECK FUEL PUMP CONTROL SYSTEM. Refer to «Fuel Pump Control Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
155. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
156. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
157. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
158. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
159. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
160. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information__removal)
161. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
162. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
163. REPLACE PRESSURE REGULATOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information)
164. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
165. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
166. REPLACE FUEL PUMP. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information)
167. INSPECT PURGE VSV. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information)
168. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information__removal)
169. ADJUST VALVE TIMING. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information)
170. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
171. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
172. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
173. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information__removal)
174. REPLACE PRESSURE REGULATOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information)
175. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information__removal)
176. REPLACE FUEL PUMP. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information)
177. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
178. REPAIR FUEL INJECTOR POWER SOURCE CIRCUIT. Refer to «Fuel Injector Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
179. REPAIR POWER SOURCE CIRCUIT. Refer to «Fuel Injector Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
180. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information__removal)
181. REPAIR POWER SOURCE CIRCUIT. Refer to «Fuel Injector Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
182. REPLACE CAMSHAFT OIL CONTROL VALVE (for Exhaust Side). Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information__removal)

The ECM continuously monitors its main and sub CPUs. This self-check ensures that the ECM is functioning properly. If outputs from the CPUs are different and deviate from the standard, the ECM will illuminate the MIL and store DTC(s) immediately.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

Scheme 55

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Wait 16 seconds or more.
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
8. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
10. Input the DTC: P1607.
11. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction.
12. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

PROCEDURE

1. CHECK DTC Clear DTC. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Turn the engine switch off. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute. Connect the cable to the negative (-) battery terminal. Turn the engine switch on (IG). Check DTC. OK P1607 is not output. NG --> See step 3 OK --> See step 2
2. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
3. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

Refer to DTC P0412. Refer to DESCRIPTION .

MONITOR DESCRIPTION

For a short time after a cold engine start, the ECM transmits command signals to the Air Injection Control Driver (AID) to drive the air pump and the Air Switching Valve (ASV). The AID detects open and short circuits according to the voltages at the AID terminals to the air pump and ASV, and the circuit voltage of the AID power source, and transmits diagnostic information as a signal to the ECM.

If the Secondary Air Injection (AIR) system circuit or the AID itself malfunctions, the AID sends a malfunction signal (duty signal) as diagnostic information to the ECM (when the system is normal, a system normal signal is sent). The ECM stores the DTC based on the diagnostic information from the AID.

EXAMPLE

1. The duty ratio of the diagnostic signal from the AID is 0 or 100% (remains at 0 V or the same as battery voltage).
2. The duty ratio of the diagnostic signal from the AID shows an impossible ratio (other than 0, 20, 40, 80 and 100%).
3. The AID outputs the normal signal (normal duty signal: 80%) while the system is not operating.

CASE 1 AND 4

CASE 2

CASE 3

CASE 1

CASE 2

CASE 3

CASE 4

COMPONENT OPERATING RANGE

Scheme 56

Note. This Secondary Air Injection Check only allows technicians to operate the AIR system for a maximum of 5 seconds. Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks. While AIR system operation using the Techstream is prohibited, the Techstream display indicates the prohibition (WAIT or ERROR). If an ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then try again. Performing the Secondary Air Injection Check repeatedly may cause damage to the AIR system. If necessary, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes.

1. Start the engine and warm it up.
2. Turn the engine switch off.
3. Connect the Techstream to the DLC3.
4. Turn the engine switch on (IG).
5. Turn the Techstream on.
6. Clear the DTCs (if set). Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) .
7. Turn the engine switch off and wait for at least 30 seconds.
8. Turn the engine switch on (IG) and turn the Techstream on [A].
9. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Automatic Mode.
10. Start the engine after the Techstream initialization is finished.
11. Perform the System Check operation by pressing ENTER (Next).
12. After operating the AIR system, perform the following to confirm the AIR system pending codes: Press the ENTER (Exit).
13. Check DTCs [B]. OK No DTC is output.
14. After the "Secondary Air Injection Check" is completed, check for All Readiness by entering the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
15. Input the DTC: P01613 or P1614.
16. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows NORMAL, the system is normal. If the judgment result shows ABNORMAL, the system has a malfunction.
17. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If no permanent DTC is output, the system is normal. If a permanent DTC is output, the system is malfunctioning.
18. Turn the engine switch off.

WIRING DIAGRAM

Refer to DTC P0412. Refer to WIRING DIAGRAM .

HINT

1. By using the Techstream to perform the Secondary Air Injection Check operation in the System Check, the air-fuel ratio and the pressure in the secondary air injection system passage can be checked while the secondary air injection system is operating. This helps technicians to troubleshoot the system when it malfunctions.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 57

Scheme 58

Scheme 59

Scheme 60

Scheme 61

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P1613 OR P1614) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P1613 and/or P1614 are output A P1613 and/or P1614 and other DTCs are output B If any DTCs other than P1613 and P1614 are output, troubleshoot those DTCs first. B --> See step 8 A: Go to next step
2. CHECK AIR INJECTION CONTROL DRIVER (POWER SOURCE CIRCUIT) Disconnect the Air Injection Control Driver (AID) connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C30-5 (+B) - Body ground Engine switch on (IG) 11 to 14 V (near battery voltage) C32-5 (+B2) - Body ground Engine switch on (IG) 11 to 14 V (near battery voltage) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (AID - ECM, BODY GROUND) Disconnect the ECM connector. Disconnect the AID connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C53-54 (AIRP) - C30-4 (SIP) Always Below 1 ohms C53-28 (AIRV) - C30-3 (SIV) Always Below 1 ohms C53-53 (ARP2) - C32-4 (SIP2) Always Below 1 ohms A38-43 (ARV2) - C32-3 (SIV2) Always Below 1 ohms C53-30 (AIDI) - C30-2 (DI) Always Below 1 ohms C53-29 (AID2) - C32-2 (DI2) Always Below 1 ohms C30-1 (E) - Body ground Always Below 1 ohms C32-1 (E2) - Body ground Always Below 1 ohms C53-54 (AIRP) or C30-4 (SIP) - Body ground Always 10 kohms or higher C53-28 (AIRV) or C30-3 (SIV) - Body ground Always 10 kohms or higher C53-53 (ARP2) or C32-4 (SIP2) - Body ground Always 10 kohms or higher A38-43 (ARV2) or C32-3 (SIV2) - Body ground Always 10 kohms or higher C53-30 (AIDI) or C30-2 (DI) - Body ground Always 10 kohms or higher C53-29 (AID2) or C32-2 (DI2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT AIR INJECTION CONTROL DRIVER (DI TERMINAL VOLTAGE) Disconnect the AID connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C30-2 (DI) - C30-1 (E) Engine switch on (IG) 11 to 14 V (near battery voltage) C32-2 (DI2) - C32-1 (E2) Engine switch on (IG) 11 to 14 V (near battery voltage) NG --> See step 9 OK: Go to next step
5. PERFORM ACTIVE TEST USING TECHSTREAM Disconnect the AID connectors. Connect terminals DI and SIV or DI2 and SIV2 of the wire harness connector for the AID. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP 1: ON, ASV 1: OPEN or AIR PUMP 2: ON, ASV 2: OPEN. HINT: When Manual Mode is selected, the Techstream initialization (atmospheric pressure measurement) is performed automatically. The initialization takes 10 seconds. After the initialization, AIR PUMP and ASV operation can be selected. Start the engine. Perform the AIR system forced operation while the engine is idling. Measure the voltage between the SIV and E or SIV2 and E2 terminals of the ECM connector when the AIR system is ON and OFF. Turn the engine switch off. NOTE: Performing Secondary Air Injection Check repeatedly may cause damage to the secondary air injection system. If it is necessary to repeat the check, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes. Standard Voltage Tester Connection Condition Specified Condition C30-3 (SIV) - C30-1 (E) AIR PUMP: ON, ASV: OPEN 0.5 to 2 V C32-3 (SIV2) - C32-1 (E2) AIR PUMP: ON, ASV: OPEN 0.5 to 2 V C30-3 (SIV) - C30-1 (E) AIR PUMP: OFF, ASV: CLOSE 11 to 14 V C32-3 (SIV2) - C32-1 (E2) AIR PUMP: OFF, ASV: CLOSE 11 to 14 V Connect terminals DI and SIP or DI2 and SIP2 of the wire harness connector for the AID. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP 1: ON, ASV 1: OPEN or AIR PUMP 2: ON, ASV 2: OPEN. HINT: When Manual Mode is selected, the Techstream initialization (atmospheric pressure measurement) is performed automatically. The initialization takes 10 seconds. After the initialization, AIR PUMP and ASV operation can be selected. Start the engine. Perform the AIR system forced operation while the engine is idling. Measure the voltage between the SIP and E or SIP2 and E2 terminals of the ECM connector when the AIR system is ON and OFF. Turn the engine switch off. NOTE: Performing Secondary Air Injection Check repeatedly may cause damage to the secondary air injection system. If it is necessary to repeat the check, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes. Standard Voltage Tester Connection Condition Specified Condition C30-4 (SIP) - C30-1 (E) AIR PUMP: ON, ASV: OPEN 0.5 to 2 V C32-4 (SIP2) - C32-1 (E2) AIR PUMP: ON, ASV: OPEN 0.5 to 2 V C30-4 (SIP) - C30-1 (E) AIR PUMP: OFF, ASV: CLOSE 11 to 14 V C32-4 (SIP2) - C32-1 (E2) AIR PUMP: OFF, ASV: CLOSE 11 to 14 V NG --> See step 9 OK: Go to next step
6. REPLACE AIR INJECTION CONTROL DRIVER Replace the air injection control driver. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information) . NEXT: Go to next step
7. CONFIRM WHETHER DTC OUTPUT RECURS Start the engine and warm it up. Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Automatic Mode. Start the engine after the Techstream initialization is finished. Perform the System Check operation by pressing Next. After operating the AIR system, perform the following to confirm the AIR system pending codes: Press the Exit button. Refer to the confirmation driving pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No DTC is output A Other DTCs are output B Turn the engine switch off. NOTE: When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes. B --> See step 9 A --> END
8. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
9. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

The throttle actuator is operated by the ECM and opens and closes the throttle valve using gears.

The opening angle of the throttle valve is detected by the Throttle Position (TP) sensor, which is mounted on the throttle body. The TP sensor provides feedback to the ECM. This feedback allows the ECM to appropriately control the throttle actuator and monitor the throttle opening angle as the ECM responds to driver inputs.

HINT

This ETCS (Electronic Throttle Control System) does not use a throttle cable.

The ECM monitors the electrical current through the electronic actuator, and detects malfunctions and open circuits in the throttle actuator based on this value. If the current is outside the standard range, the ECM determines that there is a malfunction in the throttle actuator. In addition, if the throttle valve does not function properly (for example, stuck on), the ECM determines that there is a malfunction. The ECM then illuminates the MIL and stores a DTC.

Example

1. When the electrical current is less than 0.5 A and the throttle actuator duty ratio exceeds 80%, the ECM interprets this as the current being outside the standard range, and illuminates the MIL and stores DTC.
2. If the malfunction is not repaired successfully, a DTC is set when the engine is quickly revved up to a high RPM several times after the engine has idled for 5 seconds after engine start.

ALL

P2102

P2103

P2102

P2103

Scheme 62

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine.
7. With the vehicle stationary, fully depress the accelerator pedal and quickly release it [B].
8. Check that 16 seconds or more have elapsed from the instant when the accelerator pedal is first depressed.
9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
10. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
12. Input the DTC: P2102 or P2103.
13. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [B] through [C] again.
14. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

FAIL-SAFE

When either of these DTCs, or other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions are stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 7° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the engine switch is then turned off.

Scheme 63

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. The throttle actuator current (Throttle Motor Current) and the throttle actuator duty ratio (Throttle Motor Open Duty / Throttle Motor Close Duty) can be read using the Techstream. However, the ECM shuts off the throttle actuator current when the ETCS malfunctions.

Scheme 64

Scheme 65

1. INSPECT THROTTLE BODY (RESISTANCE OF THROTTLE ACTUATOR) Disconnect the throttle body connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (M+) - 1 (M-) 20°C (68°F) 0.3 to 100 ohms NG --> See step 5 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (THROTTLE BODY - ECM) Disconnect the throttle body connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C4-2 (M+) - C53-19 (M+) Always Below 1 ohms C4-1 (M-) - C53-18 (M-) Always Below 1 ohms C4-2 (M+) or C53-19 (M+) - Body ground Always 10 kohms or higher C4-1 (M-) or C53-18 (M-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT THROTTLE BODY (VISUALLY CHECK THROTTLE VALVE) Check for foreign objects between the throttle valve and the housing. OK No foreign objects between throttle valve and housing. NG --> REMOVE FOREIGN OBJECT AND CLEAN THROTTLE BODY OK: Go to next step
4. INSPECT THROTTLE BODY (THROTTLE VALVE) Check if the throttle valve opens and closes smoothly. OK Throttle valve opens and closes smoothly. NG --> See step 6 OK --> See step 7
5. REPLACE THROTTLE BODY ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
6. REPLACE THROTTLE BODY ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
7. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

The idling speed is controlled by the Electronic Throttle Control System (ETCS).

The ETCS is comprised of a throttle actuator, which operates the throttle valve, and a throttle position sensor, which detects the opening amount of the throttle valve.

The ECM controls the throttle actuator to adjust the throttle valve opening amount so that the idling speed is maintained at the target idling speed.

HINT

1. The ISC learned value is the calculated intake air amount corresponding to the throttle opening amount necessary to maintain the idling speed.
2. This malfunction is only detected once per trip. After it has been detected once, the system will not monitor for the malfunction for the rest of the trip.
3. The system uses the throttle body assembly and mass air flow meter assembly to detect this malfunction.

If there are deposits in the throttle valve, a decrease in the ISC flow rate may cause engine stall or unstable idling. Therefore, the necessary ISC flow rate for idling is maintained using the ISC learned value and feedback. The ECM stores this DTC if the ISC learned value approaches its limit. The ECM begins monitoring for the DTC detection conditions when the following preconditions are met; 1) the mass air flow meter is normal; 2) atmospheric pressure is 85 kPa (638 mmHg) or higher; 3) the vehicle has been driven at a speed of 30 km/h (19 mph) or more at least once; and 4) the engine coolant temperature is 45°C (113°F) or less at engine start, the engine is warmed up and conditions for ISC learning are met, or the engine switch has been turned on (IG) (include engine running) for 1 hour or more, the engine is warmed up and conditions for ISC learning are met.

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.

1. Since a pending DTC is not stored for this DTC, it takes time to confirm whether the malfunction has been successfully repaired by checking for this DTC. When confirming whether the malfunction has been successfully repaired, compare "ISC Learning Value" recorded in the freeze frame data with "ISC Learning Value" in the Data List after repairs have been made to save time.

Scheme 66

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P2109) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to Only DTC P2109 is output A DTC P2109 and other DTCs are output B HINT: If any DTCs other than P2109 are output, troubleshoot those DTCs first. B --> See step 6 A: Go to next step
2. CHECK FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the engine switch on (IG). Using the Techstream, check "ISC Learning Value" in the freeze frame data. Refer to «FREEZE FRAME DATA»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction) . HINT: Be sure to confirm "ISC Learning Value" in the freeze frame data as it is used when confirming whether the malfunction has been successfully repaired. NEXT: Go to next step
3. REMOVE FOREIGN OBJECT (CLEAN THROTTLE BODY ASSEMBLY) Clean off any deposits from the inside of the throttle body. Push open the throttle valve and wipe off any carbon from the valve and bore using a cloth soaked in non-residue solvent. NOTE: Make sure that the cloth or your fingers do not get caught in the valve. Make sure that foreign matter does not enter the throttle valve. Do not directly apply non-residue solvent to the throttle body or wash the throttle body. Cleaning solvent may leak into the motor from the shaft and cause problems such as rust or valve movement problems. If there is coating material on the edge of the valve, be careful not to remove it. Push the throttle valve open gently with your finger and check that the throttle valve moves smoothly. HINT: If the throttle valve does not open smoothly, replace the throttle body assembly. NEXT: Go to next step
4. READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Remove the EFI MAIN and ETCS fuses at the same time, wait 60 seconds or more, and then reinstall the fuses to reset the ISC learning value. Start the engine and fully warm it up. Leave the vehicle idling for 3 minutes or more and check that the engine speed is at the standard idling speed. HINT: Check the freeze frame data and make sure that the vehicle conditions are the same as when the DTC was stored. Using the Techstream, confirm "ISC Learning Value". OK The value is half of "ISC Learning Value" recorded in the freeze frame data or less. NG --> See step 5 OK --> END
5. REPLACE THROTTLE BODY ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
6. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)

The throttle actuator is operated by the ECM, and opens and closes the throttle valve using the gears. The opening angle of the throttle valve is detected by the Throttle Position (TP) sensor, which is mounted on the throttle body. The TP sensor provides feedback to the ECM. This feedback allows the ECM to appropriately control the throttle actuator and monitor the throttle opening angle as the ECM responds to driver inputs.

HINT

This ETCS (Electronic Throttle Control System) does not use a throttle cable.

The ECM determines that there is a malfunction in the ETCS when the throttle valve remains at the fixed angle despite a high drive current from the ECM. The ECM illuminates the MIL and stores a DTC.

If the malfunction is not repaired successfully, a DTC is stored when the accelerator pedal is fully depressed and released quickly (to fully open and close the throttle valve) after the engine is next started.

ALL

P2111 (THROTTLE ACTUATOR STUCK OPEN)

P2112 (THROTTLE ACTUATOR STUCK CLOSED)

Scheme 67

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine and fully depress and release the accelerator pedal quickly (to fully open and close the throttle valve).
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
8. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
10. Input the DTC: P2111 or P2112.
11. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction.
12. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

When either of these DTCs, or other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions are stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 7° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the engine switch is then turned off.

Refer to DTC P2102. Refer to WIRING DIAGRAM .

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. Refer to "Data List / Active Test" [Throttle Position Command, Throttle Position No. 1, Throttle Motor Current, Throttle Motor Duty (Open), Throttle Motor Duty (Close)]. Refer to «DATA LIST / ACTIVE TEST»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__data-list-active-test) .

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2111 OR P2112) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P2111 or P2112 is output A P2111 or P2112 and other DTCs are output B B --> See step 8 A: Go to next step
2. INSPECT THROTTLE BODY (VISUALLY CHECK THROTTLE VALVE) Check for contamination between the throttle valve and the housing. If necessary, clean the throttle body. And check that the throttle valve moves smoothly. OK Throttle valve is not contaminated with foreign objects and moves smoothly. NG --> See step 5 OK: Go to next step
3. READ VALUE USING TECHSTREAM (THROTTLE POSITION) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Turn the engine switch off and wait for at least 30 seconds. Turn the engine switch on (IG). Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Throttle Position No. 1, Throttle Position No. 2 and Throttle Position Command. Check the values displayed on the Techstream while wiggling the ECM wire harness. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Check for DTCs. RESULT Result Proceed to Value in Data List changes when wire harness is wiggled, or DTC is output A Other than above B B --> See step 6 A: Go to next step
4. REPAIR OR REPLACE HARNESS OR CONNECTOR As the DTC was stored due to a change in the contact resistance of the connector, repair or replace the wire harness or connector. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(/toyota/land-cruiser/200-2012-2015/remont/hoistjack/#introduction) . NEXT --> END
5. REPLACE THROTTLE BODY ASSEMBLY Replace the throttle body assembly. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
6. CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Start the engine, and then fully depress and release the accelerator pedal quickly to fully open and close the throttle valve. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No DTC is output A P2111 or P2112 is output B B --> See step 7 A --> END
7. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
8. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)

The ETCS (Electronic Throttle Control System) has a dedicated power supply circuit. The voltage (+BM) is monitored and when it is low (less than 4 V), the ECM determines that there is a malfunction in the ETCS and cuts off the current to the throttle actuator.

When the voltage becomes unstable, the ETCS itself becomes unstable. For this reason, when the voltage is low, the current to the throttle actuator is cut. If repairs are made and the system returns to normal, turn the engine switch off. The ECM then allows the current to flow to the throttle actuator so that it can be restarted.

HINT

The ETCS does not use a throttle cable.

Scheme 68

The ECM monitors the battery supply voltage applied to the throttle actuator.

When the power supply voltage (+BM) drops below 4 V for 0.8 seconds or more, the ECM interprets this as an open in the power supply circuit (+BM). The ECM illuminates the MIL and stored the DTC.

If the malfunction is not repaired successfully, the DTC is stored 5 seconds after the engine is next started.

Scheme 69

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine.
7. Slowly depress the accelerator pedal, raise the engine speed to approximately 3000 RPM for approximately 5 seconds, and then idle the engine [B].
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
9. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P2118.
12. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [B] and [C] again.
13. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

When this DTC, or other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions are stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 7° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the engine switch is then turned off.

Scheme 70

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 71

1. READ VALUE USING TECHSTREAM (+BM VOLTAGE) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / +BM voltage. Read the value displayed on the Techstream. Standard Voltage 11 to 14 V NG --> See step 2 OK --> See step 3
2. CHECK HARNESS AND CONNECTOR (ECM - BATTERY, BODY GROUND) Disconnect the ECM connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition C53-41 (+BM) - Body ground Always 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C53-82 (ME01) - Body ground Always Below 1 ohms C53-81 (E1) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
3. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
4. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

The Electronic Throttle Control System (ETCS) is composed of the throttle actuator, Throttle Position (TP) sensor, Accelerator Pedal Position (APP) sensor, and ECM. The ECM operates the throttle actuator to regulate the throttle valve in response to driver inputs. The TP sensor detects the opening angle of the throttle valve, and provides the ECM with feedback so that the throttle valve can be appropriately controlled by the ECM.

The ECM determines the actual opening angle of the throttle valve from the TP sensor signal. The actual opening angle is compared to the target opening angle commanded by the ECM. If the difference between these two values is outside the standard range, the ECM interprets this as a malfunction in the ETCS. The ECM then illuminates the MIL and stores the DTC.

If the malfunction is not repaired successfully, the DTC is stored when the accelerator pedal is quickly released (to close the throttle valve) after the engine speed reaches 5000 RPM by the accelerator pedal being fully depressed (fully open the throttle valve).

Scheme 72

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine.
7. Idle the engine for 20 seconds.
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
9. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P2119.
12. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, fully depress and release the accelerator pedal 3 times, and then check the DTC judgment result at step [C].
13. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

When this DTC, or other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions are stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 7° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the engine switch is then turned off.

Refer to DTC P2102. Refer to WIRING DIAGRAM .

HINT

1. Refer to "Data List / Active Test" [Throttle Position Commanded, Throttle Position No. 1, Throttle Motor Current, Throttle Motor Duty (Open) and Throttle Motor Duty (Close)]. Refer to «DATA LIST / ACTIVE TEST»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__data-list-active-test) .
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2119) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P2119 is output A P2119 and other DTCs are output B HINT: If any DTCs other than P2119 are output, troubleshoot those DTCs first. B --> See step 9 A: Go to next step
2. READ VALUE USING TECHSTREAM (THROTTLE POSITION) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Turn the engine switch off and wait for at least 30 seconds. Turn the engine switch on (IG). Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Throttle Position No. 1 and Throttle Position Command. Check the values displayed on the Techstream while fully depressing and releasing the accelerator pedal quickly. RESULT Result Proceed to Throttle Position No. 1 does not change A Throttle Position No. 1 changes even a little B HINT: When a DTC is output, the system changes to fail-safe mode. Therefore, only use the data up until the time the DTC is stored for confirmation. B --> See step 4 A: Go to next step
3. INSPECT THROTTLE BODY ASSEMBLY (RESISTANCE OF THROTTLE ACTUATOR) Inspect the throttle body assembly. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NG --> See step 7 OK: Go to next step
4. INSPECT THROTTLE BODY ASSEMBLY (VISUALLY CHECK THROTTLE VALVE) Check for contamination between the throttle valve and housing. If necessary, clean the throttle body. Also, check that the throttle valve moves smoothly. OK Throttle valve is not contaminated with foreign objects and moves smoothly. NG --> See step 7 OK: Go to next step
5. READ VALUE USING TECHSTREAM (THROTTLE POSITION) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Turn the engine switch off and wait for at least 30 seconds. Turn the engine switch on (IG). Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Throttle Position No. 1, Throttle Position No. 2 and Throttle Position Command. Check the values displayed on the Techstream while wiggling the ECM wire harness. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Check for DTCs. RESULT Result Proceed to Value in Data List changes when wire harness is wiggled, or DTC is output A Other than above B B --> See step 8 A: Go to next step
6. REPAIR OR REPLACE HARNESS OR CONNECTOR As the DTC was stored due to a change in the contact resistance of the connector, repair or replace the wire harness or connector. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(/toyota/land-cruiser/200-2012-2015/remont/hoistjack/#introduction) . NEXT --> END
7. REPLACE THROTTLE BODY ASSEMBLY Replace the throttle body assembly. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
8. CHECK WHETHER DTC OUTPUT RECURS (DTC P2119) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Allow the engine to idle for 15 seconds. Fully depress and release the accelerator pedal several times quickly. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No DTC is output A P2119 is output B B --> See step 10 A --> END
9. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
10. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

HINT

This ETCS (Electronic Throttle Control System) does not use a throttle cable.

The APP sensor is mounted on the accelerator pedal bracket and has 2 sensor circuits: VPA (main) and VPA2 (sub). This sensor is a non-contact type and uses Hall-effect elements in order to yield accurate signals even in extreme driving conditions, such as at high speeds as well as very low speeds. The voltage, which is applied to terminals VPA and VPA2 of the ECM, varies between 0.5 V and 4.5 V in proportion to the operating angle of the accelerator pedal (throttle valve). A signal from VPA indicates the actual accelerator pedal opening angle (throttle valve opening angle) and is used for engine control. A signal from VPA2 conveys the status of the VPA circuit and is used to check the APP sensor itself.

The ECM monitors the actual accelerator pedal opening angle (throttle valve opening angle) through the signals from VPA and VPA2, and controls the throttle actuator according to these signals.

Scheme 73

HINT

When any of these DTCs is output, check the APP sensor voltage by entering the following menus: Powertrain / Engine and ECT / Data List / Accel Sensor Out No. 1 and Accel Sensor Out No. 2.

HINT

1. Accelerator pedal positions are expressed as voltages.

1. AP stands for Accelerator Pedal.

When either output voltage of VPA or VPA2 deviates from the standard range, or the difference between the output voltages of the 2 sensor circuits is less than the threshold, the ECM determines that there is a malfunction in the APP sensor. The ECM then illuminates the MIL and stores DTC(s).

Example

When the output voltage of VPA drops below 0.4 V for more than 0.5 seconds when the accelerator pedal is fully depressed, DTC P2122 is stored.

If the malfunction is not repaired successfully, a DTC is stored 2 seconds after the engine is next started.

P2120

P2122

P2123

P2125

P2127

P2128

P2138

Scheme 74

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Fully depress and release the accelerator pedal [B].
7. Check that 5 seconds or more have elapsed since the DTCs were cleared.
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
9. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P2120, P2122, P2123, P2125, P2127, P2128 or P2138.
12. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [B] and [C] again.
13. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

When any of DTCs P2120, P2121, P2122, P2123, P2125, P2127, P2128 and P2138 is stored, the ECM enters fail-safe mode. If either of the 2 sensor circuits malfunctions, the ECM uses the remaining circuit to calculate the accelerator pedal position to allow the vehicle to continue driving. If both of the circuits malfunction, the ECM regards the accelerator pedal as being released. As a result, the throttle valve is closed and the engine idles.

Fail-safe mode continues until a pass condition is detected, and the engine switch is turned off.

Scheme 75

HINT

1. These DTCs relate to the Accelerator Pedal Position (APP) sensor.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 76

Scheme 77

Scheme 78

1. READ VALUE USING TECHSTREAM (ACCELERATOR POSITION SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Accel Sensor Out No. 1 and Accel Sensor Out No. 2. Read the value displayed on the Techstream. Standard Voltage Accelerator Pedal Operation Accel Sensor Out No. 1 Accel Sensor Out No. 2 Difference between Accel Sensor Out No. 1 and Accel Sensor Out No. 2 Released 0.5 to 1.1 V 1.2 to 2.0 V More than 0.02 V Depressed 2.6 to 4.5 V 3.4 to 4.98 V RESULT Result Proceed to NG A OK B B --> See step 5 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL POSITION SENSOR - ECM) Disconnect the accelerator pedal position (APP) sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A31-6 (VPA) - A38-55 (VPA) Always Below 1 ohms A31-5 (EPA) - A38-58 (EPA) Always Below 1 ohms A31-4 (VCPA) - A38-57 (VCPA) Always Below 1 ohms A31-3 (VPA2) - A38-56 (VPA2) Always Below 1 ohms A31-2 (EPA2) - A38-60 (EPA2) Always Below 1 ohms A31-1 (VCP2) - A38-59 (VCP2) Always Below 1 ohms A31-6 (VPA) or A38-55 (VPA) - body ground Always 10 kohms or higher A31-5 (EPA) or A38-58 (EPA) - body ground Always 10 kohms or higher A31-4 (VCPA) or A38-57 (VCPA) - body ground Always 10 kohms or higher A31-3 (VPA2) or A38-56 (VPA2) - body ground Always 10 kohms or higher A31-2 (EPA2) or A38-60 (EPA2) - body ground Always 10 kohms or higher A31-1 (VCP2) or A38-59 (VCP2) - body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK ECM (VCPA AND VCP2 VOLTAGE) Disconnect the APP sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A31-4 (VCPA) - A31-5 (EPA) Engine switch on (IG) 4.5 to 5.5 V A31-1 (VCP2) - A31-2 (EPA2) Engine switch on (IG) 4.5 to 5.5 V NG --> See step 6 OK: Go to next step
4. REPLACE ACCELERATOR PEDAL ASSEMBLY Replace the accelerator pedal assembly. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS (ACCELERATOR PEDAL POSITION SENSOR DTCS) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Start the engine. Refer to the confirmation driving pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P2120, P2122, P2123, P2125, P2127, P2128, and/or P2138 are output A No DTC is output B B --> END A --> See step 7
6. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
7. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

HINT

Refer to DTC P2120. Refer to DESCRIPTION .

When the difference between the output voltages of VPA and VPA2 deviates from the standard, the ECM determines that the Accelerator Pedal Position (APP) sensor is malfunctioning. The ECM turns on the MIL and the DTC is stored.

ALL (CASE 1 AND CASE 2)

CASE 2

CASE 1

CASE 2

Scheme 79

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Wait for 5 seconds after turning the engine switch on (IG).
7. Operate the accelerator pedal in accordance with the following procedure [B]. Enter the following menus: Powertrain / Engine and ECT / Data List / Accel Sens. No. 1 Volt %, and Accel Sens. No. 2 Volt %. Slowly depress the accelerator pedal until Accel Sens. No. 1 Volt % is approximately 30% and Accel Sens. No. 2 Volt % is approximately 46%, and then slowly release the accelerator pedal.
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
9. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P2121.
12. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [B] and [C] again.
13. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

The Accelerator Pedal Position (APP) sensor has two (main and sub) sensor circuits. If a malfunction occurs in either of the sensor circuits, the ECM detects the abnormal signal voltage difference between the two sensor circuits and switches to fail-safe mode. In fail-safe mode, the functioning circuit is used to calculate the accelerator pedal opening angle to allow the vehicle to continue driving. If both circuits malfunction, the ECM regards the opening angle of the accelerator pedal as being fully closed. In this case, the throttle valve remains closed as if the engine is idling.

If a pass condition is detected and then the engine switch is turned off, the fail-safe operation stops and the system returns to a normal condition.

Refer to DTC P2120. Refer to WIRING DIAGRAM .

HINT

1. This DTC relates to the Accelerator Pedal Position (APP) sensor.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2121) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P2121 is output A P2121 and other DTCs are output B HINT: If any DTCs other than P2121 are output, troubleshoot those DTCs first. B --> See step 6 A: Go to next step
2. READ VALUE USING TECHSTREAM (ACCELERATOR POSITION SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Accel Sensor Out No. 1 and Accel Sensor Out No. 2. Read the values displayed on the Techstream. Standard Voltage Accelerator Pedal Operations Accel Sensor Out No. 1 Accel Sensor Out No. 2 Released 0.5 to 1.1 V 1.2 to 2.0 V Depressed 2.6 to 4.5 V 3.4 to 4.98 V NG --> See step 3 OK --> See step 7
3. REPLACE ACCELERATOR PEDAL Replace the accelerator pedal assembly. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
4. CHECK WHETHER DTC OUTPUT RECURS (DTC P2121) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Start the engine. Refer to the confirmation driving pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P2121 is output A No DTC is output B B --> END A --> See step 5
5. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
6. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
7. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)

The A/F sensor generates a voltage* that corresponds to the actual air-fuel ratio. This sensor voltage is used to provide the ECM with feedback so that it can control the air-fuel ratio. The ECM determines the deviation from the stoichiometric air-fuel ratio level, and regulates the fuel injection time. If the A/F sensor malfunctions, the ECM is unable to control the air-fuel ratio accurately.

The A/F sensor is the planar type and is integrated with the heater, which heats the solid electrolyte (zirconia element). This heater is controlled by the ECM. When the intake air volume is low (the exhaust gas temperature is low), a current flows into the heater to heat the sensor in order to facilitate accurate air-fuel ratio detection. In addition, the sensor and heater portions are the narrow type. The heat generated by the heater is conducted to the solid electrolyte through the alumina, and therefore the sensor activation is accelerated.

In order to obtain a high purification rate of the carbon monoxide (CO), hydrocarbon (HC) and nitrogen oxides (NOx) components in the exhaust gas, a TWC is used. For the most efficient use of the TWC, the air-fuel ratio must be precisely controlled so that it is always close to the stoichiometric level.

*: Value changes inside the ECM. Since the A/F sensor is the current output element, a current is converted into a voltage inside the ECM. Any measurements taken at the A/F sensor or ECM connectors will show a constant voltage.

Scheme 80

HINT

1. DTCs P2195 and P2196 indicate malfunctions related to bank 1 A/F sensor circuit.
2. DTCs P2197 and P2198 indicate malfunctions related to bank 2 A/F sensor circuit.
3. Bank 1 refers to the bank that includes the No. 1 cylinder.
4. Bank 2 refers to the bank that includes the No. 2 cylinder.
5. When either of these DTCs is stored, check the A/F sensor output voltage by entering the following menus: Powertrain / Engine and ECT / Data List / AFS Voltage B1S1 or AFS Voltage B2S1.
6. Short-term fuel trim values can also be read using the Techstream.
7. The ECM regulates the voltages at the A1A+ and A1A- or A2A+ and A2A- terminals of the ECM to a constant level. Therefore, the A/F sensor output voltage cannot be confirmed without using the Techstream.
8. If the A/F sensor is malfunctioning, the ECM stores DTC P2195, P2196, P2197 or P2198.

Sensor voltage detection monitor

Under the air-fuel ratio feedback control, if the A/F sensor output voltage indicates rich or lean for a certain period of time, the ECM determines that there is a malfunction in the A/F sensor. The ECM illuminates the MIL and stores DTC(s).

Example

If the A/F sensor output voltage is less than 2.8 V (very rich condition) for 5 seconds, despite the rear HO2 sensor output voltage decreasing from 0.59 V or more to less than 0.21 V, the ECM stores DTC P2196 or P2198. Alternatively, if the A/F sensor output voltage is more than 3.8 V (very lean condition) for 5 seconds despite the rear HO2 sensor output voltage increasing from less than 0.21 V to 0.59 V or more, DTC P2195 or P2197 is stored.

Sensor current detection monitor

A rich air-fuel mixture causes a low A/F sensor current, and a lean air-fuel mixture causes a high A/F sensor current. Therefore, the sensor output becomes low during acceleration, and it becomes high during deceleration with the throttle valve fully closed. The ECM monitors the A/F sensor current during fuel cut and detects any abnormal current values.

If the A/F sensor output is 2.2 mA or more for more than 3 seconds of cumulative time, the ECM interprets this as a malfunction in the A/F sensor and stores DTC P2195 or P2197 (high-side stuck). If the A/F sensor output is less than 0.7 mA for more than 3 seconds of cumulative time, the ECM stores DTC P2196 or P2198 (low-side stuck).

Scheme 81

ALL

SENSOR VOLTAGE DETECTION MONITOR

SENSOR CURRENT DETECTION MONITOR

SENSOR VOLTAGE DETECTION MONITOR (LEAN SIDE MALFUNCTION P2195 AND P2197)

SENSOR VOLTAGE DETECTION MONITOR (RICH SIDE MALFUNCTION P2196 AND P2198)

SENSOR CURRENT DETECTION MONITOR (HIGH SIDE MALFUNCTION P2195 AND P2197)

SENSOR CURRENT DETECTION MONITOR (RICH SIDE MALFUNCTION P2196 AND P2198)

MONITOR RESULT

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

CONFIRMATION DRIVING PATTERN

This confirmation driving pattern is used in the "PERFORM CONFIRMATION DRIVING PATTERN" procedure of the following diagnostic troubleshooting procedure.

Scheme 82

Scheme 83

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
5. Turn the engine switch off and wait for at least 30 seconds.
6. Turn the engine switch on (IG) and turn the Techstream on.
7. Start the engine, and warm it up until the ECT reaches 75°C (167°F) or higher [A].
8. On Techstream, select the following menu items to check the fuel-cut status: Powertrain / Engine and ECT / Data List / Idle Fuel Cut.
9. Drive the vehicle at between 60 km/h (37 mph) and 120 km/h (75 mph) for at least 10 minutes [B]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws.
10. Shift the transmission to 2nd gear [C].
11. Accelerate the vehicle to 64 km/h (40 mph) or more by depressing the accelerator pedal for at least 10 seconds [D]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws.
12. Soon after performing step [D] above, release the accelerator pedal for at least 7 seconds without depressing the brake pedal in order to execute fuel-cut control [E]. HINT: Fuel-cut is performed when the following conditions are met: Accelerator pedal is fully released. Engine speed is 2500 RPM or more (fuel injection returns at 1000 RPM).
13. Allow the vehicle to decelerate until the vehicle speed decreases to less than 10 km/h (6 mph).
14. Repeat steps [C] through [E] above at least 3 times in one driving cycle.
15. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [F].
16. Read the Pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
17. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
18. Input the DTC: P2195, P2196, P2197 or P2198.
19. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [B] through [F].
20. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Scheme 84

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. A low A/F sensor voltage could be caused by a rich air-fuel mixture. Check for conditions that would cause the engine to run rich.
3. A high A/F sensor voltage could be caused by a lean air-fuel mixture. Check for conditions that would cause the engine to run lean.
4. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
5. Bank 2 refers to the bank that does not include the No. 1 cylinder.
6. Sensor 1 refers to the sensor closest to the engine assembly.
7. Sensor 2 refers to the sensor farthest away from the engine assembly.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P2195, P2196, P2197 OR P2198) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P2195, P2196, P2197 or P2198 is output A "P2195, P2196, P2197 or P2198" and "P0136, P0137, P0138, P0156, P0157 or P0158" are output A P2195, P2196, P2197 or P2198 and other DTCs are output B HINT: If any DTCs relating to the A/F sensor (DTCs for the A/F sensor heater or A/F sensor admittance) are output, troubleshoot those DTCs first. B --> See step 17 A: Go to next step
2. CONFIRM IF VEHICLE HAS RUN OUT OF FUEL IN PAST Has the vehicle run out of fuel in the past? NO --> See step 4 YES: Go to next step
3. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P2195, P2196, P2197 or P2198. Check the DTC judgment result. Result Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P2195, P2196, P2197 or P2198 is output) B B --> See step 4 A --> DTC CAUSED BY RUNNING OUT OF FUEL
4. READ VALUE USING TECHSTREAM (TEST VALUE OF A/F SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Drive the vehicle in accordance with the drive pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Monitor / O2 Sensor. Check that the status of O2 Sensor is Complete. If the status is still Incomplete, drive the vehicle according to the driving pattern again. Enter the following menus: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details / RANGE B1S1 or RANGE B2S1. Check the test value of the A/F sensor output current during fuel cut. RESULT Test Value Proceed to Within normal range (0.7 mA or higher, and below 2.2 mA) A Outside normal range (Below 0.7 mA, or 2.2 mA or higher) B B --> See step 14 A: Go to next step
5. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF A/F SENSOR) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the air fuel ratio sensor at an engine speed of 2500 RPM for 90 seconds. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume. Perform the Control the Injection Volume operation with the engine idling. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12.0% to +12.0%. The injection volume can be changed in fine gradations. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning. Techstream Display (Sensor) Injection Volume Status Voltage AFS Voltage B1S1 or AFS Voltage B2S1 (Air fuel ratio) +12.0% Rich Below 3.1 V AFS Voltage B1S1 or AFS Voltage B2S1 (Air fuel ratio) -12.0% Lean Higher than 3.4 V O2S B1S2 or O2S B2S2 (Heated oxygen) +12.0% Rich Higher than 0.55 V O2S B1S2 or O2S B2S2 (Heated oxygen) -12.0% Lean Below 0.4 V RESULT Status of AFS Voltage B1S1 or AFS Voltage B2S1 Status of O2S B1S2 or O2S B2S2 Air Fuel Ratio Condition and Air Fuel Ratio Sensor Condition Proceed to Lean Lean Actual air fuel ratio lean A Rich Rich Actual air fuel ratio rich A Lean Lean/Rich Air fuel ratio sensor malfunction B Rich Lean/Rich Air fuel ratio sensor malfunction B Lean/Rich Lean/Rich Normal B Lean: During the Control the Injection Volume Active Test, the air fuel ratio sensor output voltage (AFS Voltage) is consistently higher than 3.4 V, and the heated oxygen sensor output voltage (O2S) is consistently below 0.4 V. Rich: During the Control the Injection Volume Active Test, AFS Voltage is consistently below 3.1 V, and O2S is consistently higher than 0.55 V. Lean/Rich: During the Control the Injection Volume Active Test, the output voltage of the heated oxygen sensor alternates correctly. NG --> See step 14 OK: Go to next step
6. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION - Step 4»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-intake-system-3ur-fe-inspection) . OK No leakage from air induction system. NG --> REPAIR OR REPLACE AIR INDUCTION SYSTEM OK: Go to next step
7. CHECK EXHAUST GAS LEAK Check for exhaust gas leaks. OK No gas leaks. NG --> REPAIR OR REPLACE EXHAUST SYSTEM OK: Go to next step
8. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-inspection) . NG --> See step 16 OK: Go to next step
9. INSPECT FUEL INJECTOR ASSEMBLY Check the injector injection [whether fuel volume is high or low, and whether injection pattern is poor]. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information) . NG --> See step 18 OK: Go to next step
10. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
11. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P2195, P2196, P2197 or P2198. Check the DTC judgment result. Result Result Proceed to ABNORMAL (DTC P2195, P2196, P2197 or P2198 is output) A NORMAL (DTC is not output) B B --> END A: Go to next step
12. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
13. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P2195, P2196, P2197 or P2198. Check the DTC judgment result. Result Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit NEXT --> END
14. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
15. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P2195, P2196, P2197 or P2198. Check the DTC judgment result. Result Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P2195, P2196, P2197 or P2198 is output) B B --> See step 19 A --> END
16. CHECK FUEL LINE Check the fuel lines for leaks or blockage. NG --> REPAIR OR REPLACE FUEL LINE OK --> REPLACE FUEL PUMP
17. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
18. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information__removal)
19. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

Refer to DTC P2195. Refer to DESCRIPTION .

HINT

1. DTCs P2238, P2239, P2252 and P2253 indicate malfunctions related to the bank 1 A/F sensor circuit.
2. DTCs P2241, P2242, P2255 and P2256 indicate malfunctions related to the bank 2 A/F sensor circuit.

These DTCs are stored when there is an open or short in the A/F sensor circuit, or if A/F sensor output drops.

To detect these problems, the voltage of the A/F sensor is monitored when turning the engine switch on (IG), and the admittance (admittance is an electrical term that indicates the ease of flow of current) is checked while driving. If the voltage of the A/F sensor is between 0.6 V and 4.5 V, it is considered normal. If the voltage is outside of the specified range, or the admittance is less than the standard value, the ECM will determine that there is a malfunction in the A/F sensor. If the same malfunction is detected in the next driving cycle, the MIL is illuminated and a DTC is stored.

The Air-Fuel Ratio (A/F) sensor varies its output voltage in proportion to the air-fuel ratio. If the A/F sensor impedance (alternating current resistance) or output voltage deviates greatly from the standard range, the ECM determines that there is an open or short in the A/F sensor circuit.

P2237, P2238, P2240 AND P2241

P2239, P2242, P2252, P2253, P2255 AND P2256

P2237 AND P2240 (A/F SENSOR - OPEN CIRCUIT BETWEEN A1A+ AND A1A-/A2A+ AND A2A-)

P2238 AND P2241 (A/F SENSOR - LOW IMPEDANCE)

OTHERS

P2237 AND P2240 (OPEN CIRCUIT BETWEEN A1A+ AND A1A-/A2A+ AND A2A-)

P2238 AND P2241 (LOW IMPEDANCE)

P2238 AND P2241 (SHORT CIRCUIT BETWEEN A1A+ AND GND/A2A+ AND GND)

P2238 AND P2241 (SHORT CIRCUIT BETWEEN A1A+ AND A1A-/A2A+ AND A2A-)

P2239 AND P2242 (SHORT CIRCUIT BETWEEN A1A+ AND +B/A2A+ AND +B)

P2252 AND P2255 (SHORT CIRCUIT BETWEEN A1A- AND GND/A2A- AND GND)

P2253 AND P2256 (SHORT CIRCUIT BETWEEN A1A- AND +B/A2A- AND +B)

Scheme 85

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine and wait 2 minutes.
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
8. Read the Pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
10. Input the DTC: P2237, P2238, P2239, P2240, P2241, P2242, P2252, P2253, P2255 or P2256.
11. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, idle the engine for 3 minutes and check the DTC judgment result again [C].
12. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Refer to DTC P2195. Refer to WIRING DIAGRAM .

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
3. Bank 2 refers to the bank that does not include the No. 1 cylinder.
4. Sensor 1 refers to the sensor closest to the engine assembly.
5. Sensor 2 refers to the sensor farthest away from the engine assembly.

Scheme 86

1. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM) Disconnect the air-fuel ratio (A/F) sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C47-1 (HA1A) - C53-22 (HA1A) Always Below 1 ohms C47-3 (A1A+) - C53-126 (A1A+) Always Below 1 ohms C47-4 (A1A-) - C53-125 (A1A-) Always Below 1 ohms C48-1 (HA2A) - C53-20 (HA2A) Always Below 1 ohms C48-3 (A2A+) - C53-103 (A2A+) Always Below 1 ohms C48-4 (A2A-) - C53-102 (A2A-) Always Below 1 ohms C47-1 (HA1A) or C53-22 (HA1A) - Body ground Always 10 kohms or higher C47-3 (A1A+) or C53- 126 (A1A+) - Body ground Always 10 kohms or higher C47-4 (A1A-) or C53-125 (A1A-) - Body ground Always 10 kohms or higher C48-1 (HA2A) or C53-20 (HA2A) - Body ground Always 10 kohms or higher C48-3 (A2A+) or C53- 103 (A2A+) - Body ground Always 10 kohms or higher C48-4 (A2A-) or C53-102 (A2A-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Start the engine. Refer to the confirmation driving pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Read pending DTCs. RESULT Result Proceed to No pending DTC is output A P2237, P2238, P2239, P2240, P2241, P2242, P2252, P2253, P2255 or P2256 is output B B --> See step 4 A --> END
4. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

DTC SUMMARY

HINT

The vent valve is built into the canister pump module.

The description can be found in the EVAP (Evaporative Emission) System. Refer to DESCRIPTION .

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

5 hours* after the engine switch is turned off, the leak detection pump creates negative pressure (vacuum) in the EVAP system. The ECM monitors for leaks and actuator malfunctions based on the EVAP pressure.

HINT

*: If the engine coolant temperature is not below 35°C (95°F) 5 hours after the engine switch is turned off, the monitor check starts 2 hours later. If it is still not below 35°C (95°F) 7 hours after the engine switch is turned off, the monitor check starts 2.5 hours later.

*: If only a small amount of fuel is in the fuel tank, it takes longer for the EVAP pressure to stabilize.

Scheme 87

P2420: Vent valve stuck open (vent)

In operation C, the vent valve turns on (closes) and the EVAP system pressure is then measured by the ECM using the canister pressure sensor to conduct an EVAP leak check. If the pressure does not increase when the vent valve is open, the ECM interprets this as the vent valve being stuck open. The ECM illuminates the MIL and stores DTC(s).

Scheme 88

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

Scheme 89

Note. The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by Techstream. It takes a maximum of approximately 19 minutes. Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable. Do not run the engine during this operation. When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the fuel temperature below 35°C (95°F).

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Enter the following menu items: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.
7. After the EVAP SYSTEM CHECK is completed, check for All Readiness by entering the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
8. Input the DTC: P2420.
9. Check the DTC judgment result [B]. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction.
10. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

The Secondary Air injection (AIR) system consists of an air pump, the Air Switching Valve (ASV), a pressure sensor, the Air Injection Control Driver (AID) and the ECM. For a short time after a cold engine start, the AIR system pumps secondary air to the exhaust port of the cylinder head to purify the exhaust emissions. The secondary air is supplied by the air pump and is pumped to the exhaust port through the ASV.

The AID drives the ASV and the air pump according to command signals transmitted by the ECM. The pressure sensor detects the pressure in the secondary air passage when the AIR system is ON and OFF, and transmits a pressure signal to the ECM.

The AID is not only equipped to drive the pump and valve, but also with a diagnosis function to detect malfunctions in the AIR system circuit.

HINT

As a large current is required to drive the air pump and ASV, an AID is installed to this system.

Scheme 90

Scheme 91

The ECM monitors the pressure in the secondary air passage using the pressure sensor located on the air switching valve in the secondary air injection system.

If there is a defect in the sensor or the sensor circuit, the voltage level deviates from the normal operating range, the ECM interprets this deviation as a malfunction in the pressure sensor or circuit and stores DTC(s).

P2432, P2433, P2437 AND P2438

P2431 AND P2436

P2432 AND P2437

P2433 AND P2438

P2431 AND P2436

Note. This Secondary Air Injection Check only allows technicians to operate the AIR system for a maximum of 5 seconds. Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks. While AIR system operation using the Techstream is prohibited, the Techstream display indicates the prohibition (WAIT or ERROR). If an ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then try again. Performing the Secondary Air Injection Check repeatedly may cause damage to the AIR system. If necessary, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes.

1. Start the engine and warm it up.
2. Turn the engine switch off.
3. Connect the Techstream to the DLC3.
4. Turn the engine switch on (IG).
5. Turn the Techstream on.
6. Clear the DTCs (if set). Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) .
7. Turn the engine switch off and wait for at least 30 seconds.
8. Turn the engine switch on (IG) and turn the Techstream on [A].
9. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Automatic Mode.
10. Start the engine after the Techstream initialization is finished.
11. Perform the System Check operation by pressing ENTER (Next).
12. After operating the AIR system, perform the following to confirm the AIR system pending codes: Press the ENTER (Exit).
13. Check pending DTCs [B]. OK No pending DTC is output.
14. After the "Secondary Air Injection Check" is completed, check for All Readiness by entering the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
15. Input the DTC: P2431, P2432, P2433, P2436, P2437 or P2438.
16. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows NORMAL, the system is normal. If the judgment result shows ABNORMAL, the system has a malfunction.
17. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If no permanent DTC is output, the system is normal. If a permanent DTC is output, the system is malfunctioning.
18. Turn the engine switch off.

Refer to DTC P0412. Refer to WIRING DIAGRAM .

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
3. Bank 2 refers to the bank that does not include the No. 1 cylinder.

Scheme 92

Scheme 93

1. CHECK HARNESS AND CONNECTOR (PRESSURE SENSOR - ECM) Disconnect the pressure sensor connector. Disconnect the ECM connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C35-3 (AIP) - A38-54 (AIP) Always Below 1 ohms C35-2 (VC) - C53-66 (VCV2) Always Below 1 ohms C35-4 (E2) - C53-97 (ETHW) Always Below 1 ohms C36-3 (AIP2) - A38-53 (AIP2) Always Below 1 ohms C36-2 (VC2) - C53-66 (VCV2) Always Below 1 ohms C36-4 (E22) - C53-98 (ETHA) Always Below 1 ohms C35-3 (AIP) or A38-54 (AIP) - Body ground Always 10 kohms or higher C35-2 (VC) or C53-66 (VCV2) - Body ground Always 10 kohms or higher C36-3 (AIP2) or A38-53 (AIP2) - Body ground Always 10 kohms or higher C36-2 (VC2) or C53-66 (VCV2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. INSPECT AIR SWITCHING VALVE (PRESSURE SENSOR) Connect a pressure gauge to the air pressure sensor as shown in the illustration. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Air pump pressure (absolute) and Air Pump2 Pressure (Absolute). Check that the pressure displayed on the Techstream fluctuates when applying the pressure to the pressure sensor with the pressure gauge. NOTE: Do not let foreign matter enter the sensor when applying pressure. OK Pressure fluctuates in response to pressure applied with pressure gauge. HINT: The Techstream displays the air pump pressure as absolute pressure. NG --> See step 3 OK --> See step 4
3. REPLACE AIR SWITCHING VALVE. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information)
4. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

Refer to DTC P0412. Refer to DESCRIPTION .

HINT

Air switching valve normal operation

When the Air Switching Valve (ASV) is open, exhaust gas pulsation occurs in the secondary air passage.

When the ASV is closed, exhaust gas pulsation does not occur in the secondary air passage.

The ECM monitors the pressure in the secondary air passage using the pressure sensor connected to the ASV of the Secondary Air Injection (AIR) system.

If either of the following conditions occurs, the ECM interprets it as a malfunction of the AIR system, illuminates the MIL and stores DTC(s)

1. Exhaust gas pulsation is detected by the pressure sensor despite the ECM commanding the ASV to close.
2. Exhaust gas pulsation is not detected by the pressure sensor despite the ECM commanding the ASV to open.

ALL

P2440, P2442 (AIR VALVE IS STUCK OPEN) [CASE 1], P2441, P2443 (AIR VALVE IS STUCK CLOSED)

*1: AIR MONITOR DURING AIR: ON

*2: AIR MONITOR DURING AIR: OFF

P2440, P2442 (AIR VALVE IS STUCK OPEN) [CASE 2]

P2440, P2442 (AIR VALVE IS STUCK OPEN) [CASE 1]

P2440, P2442 (AIR VALVE IS STUCK OPEN) [CASE 2]

P2441, P2443 (AIR VALVE IS STUCK CLOSED)

SECONDARY AIR INJECTION ON (CONDITION 1)

SECONDARY AIR INJECTION ON (CONDITION 2)

SECONDARY AIR INJECTION ON (CONDITION 3)

SECONDARY AIR INJECTION ON (CONDITION 4)

SECONDARY AIR INJECTION OFF (CONDITION 1)

SECONDARY AIR INJECTION OFF (CONDITION 2)

SECONDARY AIR INJECTION OFF (CONDITION 3)

SECONDARY AIR INJECTION OFF (CONDITION 4)

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

Note. This Secondary Air Injection Check only allows technicians to operate the AIR system for a maximum of 5 seconds. Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks. While AIR system operation using the Techstream is prohibited, the Techstream display indicates the prohibition (WAIT or ERROR). If an ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then try again. Performing the Secondary Air Injection Check repeatedly may cause damage to the AIR system. If necessary, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes.

1. Start the engine and warm it up.
2. Turn the engine switch off.
3. Connect the Techstream to the DLC3.
4. Turn the engine switch on (IG).
5. Turn the Techstream on.
6. Clear the DTCs (if set). Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) .
7. Turn the engine switch off and wait for at least 30 seconds.
8. Turn the engine switch on (IG) and turn the Techstream on [A].
9. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Automatic Mode.
10. Start the engine after the Techstream initialization is finished.
11. Perform the System Check operation by pressing ENTER (Next).
12. After operating the AIR system, perform the following to confirm the AIR system pending codes: Press the ENTER (Exit).
13. Check pending DTCs [B]. OK No pending DTC is output.
14. After the "Secondary Air Injection Check" is completed, check for All Readiness by entering the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
15. Input the DTC: P2440, P2441, P2442 or P2443.
16. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows NORMAL, the system is normal. If the judgment result shows ABNORMAL, the system has a malfunction.
17. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If no permanent DTC is output, the system is normal. If a permanent DTC is output, the system is malfunctioning.
18. Turn the engine switch off.

Refer to DTC P0412. Refer to WIRING DIAGRAM .

HINT

Determination by ECM monitoring

The ECM locates malfunctions in the Secondary Air Injection (AIR) system by detecting the pressure in the AIR passage between the air pump and Air Switching Valve (ASV) and stores DTC(s). Soon after a cold engine start, the monitor runs for a short time while the AIR system is both ON and OFF. The ECM detects both the pressure and the exhaust pulsation and compares them.

The following 8 patterns are AIR system pressure conditions in the AIR system passage.

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 1

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 2

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 3

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 4

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 5

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 6

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 7

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 8

If the detected pressure is high, the air pump is assumed to be ON and if it alternates sharply, the ASV is assumed to be open. The ECM locates malfunctions from the combination of pressures detected when the AIR system is ON and OFF.

HINT

The exhaust pulsation value is calculated in the ECM. If the calculated value exceeds a certain level, the ECM determines that the exhaust pulsation is in the AIR system.

HINT

1. In case 3 and 7, as the pressure sensor detects a slight pump operation pulsation, the detected value is not constant. Since the pump outlet is blocked by closing the ASV, the average pressure is higher than in case 1 (approximately 10 to 30 kPa).
2. In case 1, the average pressure is approximately 3 to 11 kPa. The value of 2.4 kPa indicated in the table above is a threshold for detecting pump malfunctions.

HINT

1. If the vacuum hose between the ASV and the pressure sensor is not connected correctly, case 4 may occur.
2. By using the Techstream to perform the Secondary Air Injection Check operation in the System Check, the air-fuel ratio and the pressure in the secondary air injection system passage can be checked while the secondary air injection system is operating. This helps technicians to troubleshoot the system when it malfunctions. Furthermore, Pending Codes also can be checked by performing Utility / Secondary Air Injection Check / Automatic Mode after the repair.
3. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. System Check
2. The pressure in the secondary air passage can be checked using the Techstream. Start the engine and warm it up. Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP 1: ON, ASV1: OPEN, AIR PUMP 2: ON, ASV2: OPEN and AIR PUMP 1: OFF, ASV1 CLOSE, AIR PUMP 2: OFF, ASV2 CLOSE. HINT: When Manual Mode is selected, the Techstream initialization (atmospheric pressure measurement) is performed automatically. The initialization takes 10 seconds. After the initialization, AIR PUMP and ASV operation can be selected. Start the engine. Perform the AIR system intrusive operation while the engine is idling. Check that the air pump (AIR PUMP), ASV and pressure in the AIR system passage (PRESSURE) displayed on the Techstream indicate the conditions shown in the table below. Standard Operations AIR PUMP ASV PRESSURE*1 PULSATION*2 AIR PUMP: ON, ASV: OPEN ON OPEN 2.4 kPa or higher 10 kPa or higher AIR PUMP: OFF, ASV: CLOSE OFF CLOSE Below 2.4 kPa Below 30 kPa *1: Average pumping pressure (gauge pressure). The pressure should be 2.4 kPa or higher when the AIR system operates. *2: The cumulative exhaust pulsation calculated by the ECM. If the calculated value exceeds a certain level, the ECM determines that the exhaust pulsation is in the AIR system. Turn the engine switch off. NOTE: This Secondary Air Injection Check only allows technicians to operate the AIR system for a maximum of 5 seconds. Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks. While AIR system operation using the Techstream is prohibited, the Techstream display indicates the prohibition (WAIT or ERROR). If an ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then try again. Performing the Secondary Air Injection Check repeatedly may cause damage to the AIR system. If necessary, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes.

HINT

1. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
2. Bank 2 refers to the bank that does not include the No. 1 cylinder.

Scheme 94

Scheme 95

Scheme 96

Scheme 97

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO SECONDARY AIR INJECTION SYSTEM DTCS) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P2440, P2441, P2442 and/or P2443 are output A P2440, P2441, P2442 and/or P2443 and P0412 and/or P0415 are output B P2440, P2441, P2442 and/or P2443 and other DTCs (except P0412 and P0415) are output C If any DTCs other than P0412, P0415, P2440, P2441, P2442 and/or P2443 are output, troubleshoot those DTCs first. B --> See step 13 C --> See step 14 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM Visual check Start the engine and warm it up. Turn the engine switch off. Disconnect the No. 1 air hose. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP 1: ON, ASV1: OPEN, AIR PUMP 2: ON, ASV2: OPEN. HINT: When Manual Mode is selected, the Techstream initialization (atmospheric pressure measurement) is performed automatically. The initialization takes 10 seconds. After the initialization, AP and ASV operation can be selected. Start the engine. Perform the AIR system intrusive operation while the engine is idling. Place your hand near the air switching valve port and check that the exhaust gas pressure pulsates when the ASV is turned on. WARNING: To avoid the danger of being burned by the exhaust gas, bring your hand close to the valve port slowly. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP 1: ON, ASV1: OPEN, AIR PUMP 2: ON, ASV2: OPEN and AIR PUMP 1: ON, ASV1: CLOSE, AIR PUMP 2: ON, ASV2: CLOSE. Check that the exhaust gas does not pulsate when the ASV is turned off. Turn the engine switch off. NOTE: This Secondary Air Injection Check only allows technicians to operate the AIR system for a maximum of 5 seconds. Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks. While AIR system operation using the Techstream is prohibited, the Techstream display indicates the prohibition (WAIT or ERROR). If an ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then try again. Performing the Secondary Air Injection Check repeatedly may cause damage to the AIR system. If necessary, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes. OK Air Pump Operations ASV Operations Exhaust Gas Pulsation ON OFF Not detected ON ON Detected Other inspection method: The ASV operation can be confirmed by checking the cumulative pressure pulsation* provided in the System Check. Perform System Check operation under Manual Mode. *: The exhaust pulsation value is calculated in the ECM. If the calculated value exceeds a certain level, the ECM determines that the exhaust pulsation is in the AIR system. Start the engine and warm it up. Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP 1: ON, ASV1: OPEN, AIR PUMP 2: ON, ASV2: OPEN and AIR PUMP 1: OFF, ASV1: CLOSE, AIR PUMP 2: OFF, ASV2: CLOSE. Start the engine after the Techstream initialization is finished. Perform the AIR system intrusive operation while the engine is idling. Check that the air-fuel ratio and pressure in the secondary air injection system passage (Pulsation) displayed on the Techstream indicate the conditions shown in the table below. Turn the engine switch off. OK AIR System Operation Pulsation Condition (ECM Calculation) Air-Fuel Ratio (Reference) AIR PUMP: ON, ASV: OPEN 10 kPa or higher 18 or more AIR PUMP: OFF, ASV: CLOSE Below 30 kPa Approximately 14.5 (around stoichiometric air-fuel ratio) Reference: If the air pump operation is confirmed as normal. Refer to «DTC P2444: Secondary Air Injection System Pump Stuck On Bank1; DTC P2445: Secondary Air Injection System Pump Stuck Off Bank1; DTC P2446: Secondary Air Injection System Pump Stuck On Bank 2; DTC P2447: Secondary Air Injection System Pump Stuck Off Bank 2»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests) , the air-fuel ratio detected in front of three-way catalytic converter changes in response to the secondary air pumped into the exhaust port when the air pump operates. RESULT Result Proceed to NG A OK B B --> See step 10 A: Go to next step
3. INSPECT AIR TUBE (BLOCKAGES AND LEAKAGES) Check that the No. 2 and No. 3 air tubes are securely connected to both the exhaust manifold and the ASV. Inspect the air tube for blockages and damage. OK No blockages and damage on intake pipe. NG --> See step 15 OK: Go to next step
4. INSPECT AIR SWITCHING VALVE Inspect the air switching valve. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information) . NG --> See step 16 OK: Go to next step
5. INSPECT AIR INJECTION CONTROL DRIVER (POWER SOURCE OF AIR INJECTION CONTROL DRIVER) Disconnect the air injection control driver (AID) connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C30-1 (E) - Body ground Always Below 1 ohms C32-1 (E2) - Body ground Always Below 1 ohms Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C29-1 (BATT) - Body ground Always 11 to 14 V (near battery voltage) C30-5 (+B) - Body ground Engine switch on (IG) 11 to 14 V (near battery voltage) C31-1 (BAT2) - Body ground Always 11 to 14 V (near battery voltage) C32-5 (+B2) - Body ground Engine switch on (IG) 11 to 14 V (near battery voltage) NG --> REPAIR OR REPLACE AIR INJECTION CONTROL DRIVER POWER SOURCE CIRCUIT OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (ECM - AIR INJECTION CONTROL DRIVER) Disconnect the ECM connector. Disconnect the AID connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C53-28 (AIRV) - C30-3 (SIV) Always Below 1 ohms A38-43 (ARV2) - C32-3 (SIV2) Always Below 1 ohms C53-28 (AIRV) or C30-3 (SIV) - Body ground Always 10 kohms or higher A38-43 (ARV2) or C32-3 (SIV2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. PERFORM ACTIVE TEST USING TECHSTREAM Disconnect the AID connectors. Connect terminals DI and SIV or DI2 and SIV2 of the wire harness connector for the AID. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP 1: ON, ASV 1: OPEN or AIR PUMP 2: ON, ASV 2: OPEN. HINT: When Manual Mode is selected, the Techstream initialization (atmospheric pressure measurement) is performed automatically. The initialization takes 10 seconds. After the initialization, AIR PUMP and ASV operation can be selected. Start the engine. Perform the AIR system forced operation while the engine is idling. Measure the voltage between the SIV and E or SIV2 and E2 terminals of the ECM connector when the AIR system is ON and OFF. Turn the engine switch off. NOTE: Performing Secondary Air Injection Check repeatedly may cause damage to the secondary air injection system. If it is necessary to repeat the check, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes. Standard Voltage Tester Connection Condition Specified Condition C30-3 (SIV) - C30-1 (E) AIR PUMP: ON, ASV: OPEN 0.5 to 2 V C32-3 (SIV2) - C32-1 (E2) AIR PUMP: ON, ASV: OPEN 0.5 to 2 V C30-3 (SIV) - C30-1 (E) AIR PUMP: OFF, ASV: CLOSE 11 to 14 V C32-3 (SIV2) - C32-1 (E2) AIR PUMP: OFF, ASV: CLOSE 11 to 14 V Connect terminals DI and SIP or DI2 and SIP2 of the wire harness connector for the AID. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP 1: ON, ASV 1: OPEN or AIR PUMP 2: ON, ASV 2: OPEN. HINT: When Manual Mode is selected, the Techstream initialization (atmospheric pressure measurement) is performed automatically. The initialization takes 10 seconds. After the initialization, AIR PUMP and ASV operation can be selected. Start the engine. Perform the AIR system forced operation while the engine is idling. Measure the voltage between the SIP and E or SIP2 and E2 terminals of the ECM connector when the AIR system is ON and OFF. Turn the engine switch off. NOTE: Performing Secondary Air Injection Check repeatedly may cause damage to the secondary air injection system. If it is necessary to repeat the check, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes. Standard Voltage Tester Connection Condition Specified Condition C30-4 (SIP) - C30-1 (E) AIR PUMP: ON, ASV: OPEN 0.5 to 2 V C32-4 (SIP2) - C32-1 (E2) AIR PUMP: ON, ASV: OPEN 0.5 to 2 V C30-4 (SIP) - C30-1 (E) AIR PUMP: OFF, ASV: CLOSE 11 to 14 V C32-4 (SIP2) - C32-1 (E2) AIR PUMP: OFF, ASV: CLOSE 11 to 14 V NG --> See step 12 OK: Go to next step
8. REPLACE AIR INJECTION CONTROL DRIVER Replace the air injection control driver. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information) . NEXT: Go to next step
9. CHECK WHETHER DTC OUTPUT RECURS (DTC P2440, P2441, P2442 AND/OR P2443) Start the engine and warm it up. Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs (if output). Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Automatic Mode. Start the engine after the Techstream initialization is finished. Perform the System Check operation by pressing Next. After operating the AIR system, perform the following to confirm the AIR system pending codes: Press the Exit button. Refer to the confirmation driving pattern. Check pending DTCs. Turn the engine switch off. OK No pending DTC output. NOTE: When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes. NG --> See step 12 OK --> END
10. INSPECT VACUUM HOSES (AIR SWITCHING VALVE - PRESSURE SENSOR) Check the vacuum hose connections with the pressure sensor and ASV. Inspect the vacuum hose for blockages and damage. OK Vacuum hose has no blockages or damage. NG --> REPAIR OR REPLACE VACUUM HOSE OK: Go to next step
11. INSPECT AIR SWITCHING VALVE (PRESSURE SENSOR) See step 2 NG --> See step 17 OK --> See step 18
12. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
13. GO TO AIR SWITCHING VALVE INSPECTION PROCEDURE (P0412 AND P0415). Refer to «INSPECTION PROCEDURE»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostic-codes-p0010-p0415)
14. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
15. REPLACE AIR TUBE. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information)
16. REPLACE AIR SWITCHING VALVE. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information)
17. REPLACE AIR SWITCHING VALVE. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information)
18. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)

Refer to P2440. Refer to DESCRIPTION .

The ECM monitors the pressure in the secondary air passage using the pressure sensor located on the Air Switching Valve (ASV) of the Secondary Air Injection (AIR) system. The sensor measures the pressure in the secondary air passage and transmits a signal to the ECM.

If either of the following conditions occurs, the ECM interprets it as a malfunction of the AIR system, illuminates the MIL and stores DTC(s)

1. The pressure indicated by the pressure sensor does not reach threshold levels despite the ECM turning on the air pump.
2. The pressure indicated by the pressure sensor exceeds threshold levels despite the ECM turning off the air pump.

ALL

P2444, P2446 (AIR PUMP IS STUCK ON), P2445, P2447 (AIR PUMP IS STUCK OFF)

*1: AIR MONITOR DURING AIR: ON

*2: AIR MONITOR DURING AIR: OFF

P2445, P2447 (SECONDARY AIR INJECTION INSUFFICIENT)

*3: AIR MONITOR DURING AIR: ON

P2444, P2446 (AIR PUMP IS STUCK ON)

P2445, P2447 (AIR PUMP IS STUCK OFF)

P2445, P2447 (SECONDARY AIR INJECTION INSUFFICIENT)

SECONDARY AIR INJECTION ON (CONDITION 1)

SECONDARY AIR INJECTION ON (CONDITION 2)

SECONDARY AIR INJECTION ON (CONDITION 3)

SECONDARY AIR INJECTION ON (CONDITION 4)

SECONDARY AIR INJECTION OFF (CONDITION 1)

SECONDARY AIR INJECTION OFF (CONDITION 2)

SECONDARY AIR INJECTION OFF (CONDITION 3)

SECONDARY AIR INJECTION OFF (CONDITION 4)

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

Note. This Secondary Air Injection Check only allows technicians to operate the AIR system for a maximum of 5 seconds. Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks. While AIR system operation using the Techstream is prohibited, the Techstream display indicates the prohibition (WAIT or ERROR). If an ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then try again. Performing the Secondary Air Injection Check repeatedly may cause damage to the AIR system. If necessary, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes.

1. Start the engine and warm it up.
2. Turn the engine switch off.
3. Connect the Techstream to the DLC3.
4. Turn the engine switch on (IG).
5. Turn the Techstream on.
6. Clear the DTCs (if set). Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) .
7. Turn the engine switch off and wait for at least 30 seconds.
8. Turn the engine switch on (IG) and turn the Techstream on [A].
9. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Automatic Mode.
10. Start the engine after the Techstream initialization is finished.
11. Perform the System Check operation by pressing ENTER (Next).
12. After operating the AIR system, perform the following to confirm the AIR system pending codes: Press the ENTER (Exit).
13. Check pending DTCs [B]. OK No pending DTC is output.
14. After the "Secondary Air Injection Check" is completed, check for All Readiness by entering the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
15. Input the DTC: P2444, P2445, P2446 or P2447.
16. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows NORMAL, the system is normal. If the judgment result shows ABNORMAL, the system has a malfunction.
17. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If no permanent DTC is output, the system is normal. If a permanent DTC is output, the system is malfunctioning.
18. Turn the engine switch off.

Refer to DTC P0412. Refer to WIRING DIAGRAM .

HINT

Determination by ECM monitoring

The ECM locates malfunctions in the Secondary Air Injection (AIR) system by detecting the pressure in the AIR passage between the air pump and Air Switching Valve (ASV) and stores DTC(s). Soon after a cold engine start, the monitor runs for a short time while the AIR system is both ON and OFF. The ECM detects both the pressure and the exhaust pulsation and compares them.

The following 8 patterns are AIR system pressure conditions in the AIR system passage.

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 1

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 2

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 3

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 4

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 5

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 6

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 7

PRESSURE CONDITION IN SECONDARY AIR INJECTION SYSTEM CASE 8

If the detected pressure is high, the air pump is assumed to be ON and if it alternates sharply, the ASV is assumed to be open. The ECM locates malfunctions from the combination of pressures detected when the AIR system is ON and OFF.

HINT

The exhaust pulsation value is calculated in the ECM. If the calculated value exceeds a certain level, the ECM determines that the exhaust pulsation is in the AIR system.

HINT

1. In case 3 and 7, as the pressure sensor detects a slight pump operation pulsation, the detected value is not constant. Since the pump outlet is blocked by closing the ASV, the average pressure is higher than in case 1 (approximately 10 to 30 kPa).
2. In case 1, the average pressure is approximately 3 to 11 kPa. The value of 2.4 kPa indicated in the table above is a threshold for detecting pump malfunctions.

HINT

1. If the vacuum hose between the ASV and the pressure sensor is not connected correctly, case 4 may occur.
2. By using the Techstream to perform the Secondary Air Injection Check operation in the System Check, the air-fuel ratio and the pressure in the secondary air injection system passage can be checked while the secondary air injection system is operating. This helps technicians to troubleshoot the system when it malfunctions. Furthermore, Pending Codes also can be checked by performing Utility / Secondary Air Injection Check / Automatic Mode after the repair.
3. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. System Check
2. The pressure in the secondary air passage can be checked using the Techstream. Start the engine and warm it up. Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP 1: ON, ASV1: OPEN, AIR PUMP 2: ON, ASV2: OPEN and AIR PUMP 1: OFF, ASV1 CLOSE, AIR PUMP 2: OFF, ASV2 CLOSE. HINT: When Manual Mode is selected, the Techstream initialization (atmospheric pressure measurement) is performed automatically. The initialization takes 10 seconds. After the initialization, AIR PUMP and ASV operation can be selected. Start the engine. Perform the AIR system intrusive operation while the engine is idling. Check that the air pump (AIR PUMP), ASV and pressure in the AIR system passage (PRESSURE) displayed on the Techstream indicate the conditions shown in the table below. Standard Operations AIR PUMP ASV PRESSURE*1 PULSATION*2 AIR PUMP: ON, ASV: OPEN ON OPEN 2.4 kPa or higher 10 kPa or higher AIR PUMP: OFF, ASV: CLOSE OFF CLOSE Below 2.4 kPa Below 30 kPa *1: Average pumping pressure (gauge pressure). The pressure should be 2.4 kPa or higher when the AIR system operates. *2: The cumulative exhaust pulsation calculated by the ECM. If the calculated value exceeds a certain level, the ECM determines that the exhaust pulsation is in the AIR system. Turn the engine switch off. NOTE: This Secondary Air Injection Check only allows technicians to operate the AIR system for a maximum of 5 seconds. Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks. While AIR system operation using the Techstream is prohibited, the Techstream display indicates the prohibition (WAIT or ERROR). If an ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then try again. Performing the Secondary Air Injection Check repeatedly may cause damage to the AIR system. If necessary, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

1. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
2. Bank 2 refers to the bank that does not include the No. 1 cylinder.

Scheme 98

Scheme 99

Scheme 100

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2444, P2445, P2446 AND/OR P2447) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P2444, P2445, P2446 and/or P2447 are output A P2444, P2445, P2446 and/or P2447 and P0418 and/or P0419 are output B P2444, P2445, P2446 and/or P2447 and other DTCs (except P0418 and P0419) are output C If any DTCs other than P0418, P0419, P2444, P2445, P2446 and/or P2447 are output, troubleshoot those DTCs first. B --> See step 15 C --> See step 16 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (SECONDARY AIR INJECTION SYSTEM OPERATION) Start the engine and warm it up. Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP 1: ON, ASV1: OPEN, AIR PUMP 2: ON, ASV2: OPEN and AIR PUMP 1: OFF, ASV1: CLOSE, AIR PUMP 2: OFF, ASV2: CLOSE. HINT: When Manual Mode is selected, the Techstream initialization (atmospheric pressure measurement) is performed automatically. The initialization takes 10 seconds. After the initialization, AIR PUMP and ASV operation can be selected. Start the engine. Perform the AIR system intrusive operation while the engine is idling. Check that the air pump (AIR PUMP), ASV and pressure in the AIR system passage (PRESSURE) status displayed on the Techstream indicate the conditions shown in the table below. Standard Operation AIR PUMP ASV PRESSURE* AIR PUMP: ON, ASV: OPEN ON ON 2.4 kPa or higher AIR PUMP: OFF, ASV: CLOSE OFF OFF Below 2.4 kPa *: Average pumping pressure. The pressure should be 2.4 kPa or higher when the AIR system operates. Turn the engine switch off. NOTE: This Secondary Air Injection Check only allows technicians to operate the AIR system for a maximum of 5 seconds. Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks. While AIR system operation using the Techstream is prohibited, the Techstream display indicates the prohibition (WAIT or ERROR). If an ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then try again. Performing the Secondary Air Injection Check repeatedly may cause damage to the AIR system. If necessary, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes. NG --> See step 4 OK: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P2444, P2445, P2446 AND/OR P2247) Start the engine and warm it up. Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs (if output). Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Automatic Mode. Start the engine after the Techstream initialization is finished. Perform the System Check operation by pressing Next. After operating the AIR system, perform the following to confirm the AIR system pending codes: Press the Exit button. Refer to the confirmation driving pattern. Check pending DTCs. Turn the engine switch off. NOTE: When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes. RESULT Result Proceed to P2444, P2445, P2446 and/or P2447 are output A No pending DTC is output B B --> See step 17 A: Go to next step
4. INSPECT VACUUM HOSES (AIR SWITCHING VALVE - PRESSURE SENSOR) Check the vacuum hose connections with the pressure sensor and ASV. Inspect the vacuum hose for blockages and damage. OK Vacuum hose has no blockages or damage. NG --> REPAIR OR REPLACE VACUUM HOSE OK: Go to next step
5. INSPECT AIR SWITCHING VALVE (PRESSURE SENSOR) See step 2 NG --> See step 18 OK: Go to next step
6. CHECK AIR INJECTION SYSTEM PIPE CONNECTIONS Check that all the pipes and hoses between the air pump and ASV are securely connected. Inspect the pipes and hoses for blockages and damage. OK AIR system piping has no blockages or damage. NG --> REPAIR OR REPLACE AIR INJECTION SYSTEM PIPING OK: Go to next step
7. INSPECT AIR INJECTION CONTROL DRIVER (AIR INJECTION CONTROL DRIVER POWER SOURCE CIRCUIT) Disconnect the air injection control driver (AID) connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C30-1 (E) - Body ground Always Below 1 ohms C32-1 (E2) - Body ground Always Below 1 ohms Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C29-1 (BATT) - Body ground Always 11 to 14 V (near battery voltage) C30-5 (+B) - Body ground Engine switch on (IG) 11 to 14 V (near battery voltage) C31-1 (BAT2) - Body ground Always 11 to 14 V (near battery voltage) C32-5 (+B2) - Body ground Engine switch on (IG) 11 to 14 V (near battery voltage) NG --> REPAIR OR REPLACE AIR INJECTION CONTROL DRIVER POWER SOURCE CIRCUIT OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (ECM - AIR INJECTION CONTROL DRIVER) Disconnect the ECM connector. Disconnect the AID connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C53-54 (AIRP) - C30-4 (SIP) Always Below 1 ohms C53-53 (ARP2) - C32-4 (SIP2) Always Below 1 ohms C53-54 (AIRP) or C30-4 (SIP) - Body ground Always 10 kohms or higher C53-53 (ARP2) or C32-4 (SIP2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. INSPECT AIR PUMP Start the engine and warm it up. Turn the engine switch off. Connect the 400 A probe of an ammeter to the positive (+) wire of the air pump. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Start the engine. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP 1: ON, ASV1: OPEN, AIR PUMP 2: ON, ASV2: OPEN and AIR PUMP 1: OFF, ASV1: CLOSE, AIR PUMP 2: OFF, ASV2: CLOSE. HINT: When Manual Mode is selected, the Techstream initialization (atmospheric pressure measurement) is performed automatically. The initialization takes 10 seconds. After the initialization, AIR PUMP and ASV operation can be selected. Measure the current while the air pump is on and off. Standard Current Tester Operation Air Pump ASV Specified Condition AIR PUMP: ON, ASV: OPEN ON OPEN 10 to 40 A AIR PUMP: OFF, ASV: CLOSE OFF CLOSE Below 1 A NOTE: This Secondary Air Injection Check only allows technicians to operate the AIR system for a maximum of 5 seconds. Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks. While AIR system operation using the Techstream is prohibited, the Techstream display indicates the prohibition (WAIT or ERROR). If ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then try again. Performing the Secondary Air Injection Check repeatedly may cause damage to the AIR system. If necessary, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes. NG --> See step 13 OK: Go to next step
10. PERFORM ACTIVE TEST USING TECHSTREAM Disconnect the AID connectors. Connect terminals DI and SIV or DI2 and SIV2 of the wire harness connector for the AID. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP 1: ON, ASV 1: OPEN or AIR PUMP 2: ON, ASV 2: OPEN. HINT: When Manual Mode is selected, the Techstream initialization (atmospheric pressure measurement) is performed automatically. The initialization takes 10 seconds. After the initialization, AIR PUMP and ASV operation can be selected. Start the engine. Perform the AIR system forced operation while the engine is idling. Measure the voltage between the SIV and E or SIV2 and E2 terminals of the ECM connector when the AIR system is ON and OFF. Turn the engine switch off. NOTE: Performing Secondary Air Injection Check repeatedly may cause damage to the secondary air injection system. If it is necessary to repeat the check, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes. Standard Voltage Tester Connection Condition Specified Condition C30-3 (SIV) - C30-1 (E) AIR PUMP: ON, ASV: OPEN 0.5 to 2 V C32-3 (SIV2) - C32-1 (E2) AIR PUMP: ON, ASV: OPEN 0.5 to 2 V C30-3 (SIV) - C30-1 (E) AIR PUMP: OFF, ASV: CLOSE 11 to 14 V C32-3 (SIV2) - C32-1 (E2) AIR PUMP: OFF, ASV: CLOSE 11 to 14 V Connect terminals DI and SIP or DI2 and SIP2 of the wire harness connector for the AID. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP 1: ON, ASV 1: OPEN or AIR PUMP 2: ON, ASV 2: OPEN. HINT: When Manual Mode is selected, the Techstream initialization (atmospheric pressure measurement) is performed automatically. The initialization takes 10 seconds. After the initialization, AIR PUMP and ASV operation can be selected. Start the engine. Perform the AIR system forced operation while the engine is idling. Measure the voltage between the SIP and E or SIP2 and E2 terminals of the ECM connector when the AIR system is ON and OFF. Turn the engine switch off. NOTE: Performing Secondary Air Injection Check repeatedly may cause damage to the secondary air injection system. If it is necessary to repeat the check, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes. Standard Voltage Tester Connection Condition Specified Condition C30-4 (SIP) - C30-1 (E) AIR PUMP: ON, ASV: OPEN 0.5 to 2 V C32-4 (SIP2) - C32-1 (E2) AIR PUMP: ON, ASV: OPEN 0.5 to 2 V C30-4 (SIP) - C30-1 (E) AIR PUMP: OFF, ASV: CLOSE 11 to 14 V C32-4 (SIP2) - C32-1 (E2) AIR PUMP: OFF, ASV: CLOSE 11 to 14 V NG --> See step 14 OK: Go to next step
11. REPLACE AIR INJECTION CONTROL DRIVER Replace the air injection control driver. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information) . NEXT: Go to next step
12. CHECK WHETHER DTC OUTPUT RECURS (DTC P2444, P2445, P2446 AND/OR P2447) Start the engine and warm it up. Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs (if output). Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Automatic Mode. Start the engine after the Techstream initialization is finished. Perform the System Check operation by pressing Next. After operating the AIR system, perform the following to confirm the AIR system pending codes: Press the Exit button. Refer to the confirmation driving pattern. Check pending DTCs. Turn the engine switch off. OK No pending DTC is output. NOTE: When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes. NG --> See step 14 OK --> END
13. REPLACE AIR PUMP. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information)
14. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
15. GO TO AIR PUMP INSPECTION PROCEDURE. Refer to «INSPECTION PROCEDURE»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostic-codes-p0418-p1605__inspection-procedure)
16. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
17. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
18. REPLACE AIR SWITCHING VALVE. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information)

The soak timer operates after the engine switch is turned off. When a certain amount of time has elapsed after turning the engine switch off the soak timer activates the ECM to perform malfunction checks which can only be performed after the engine is stopped. The soak timer is built into the ECM.

Scheme 101

1. While the engine is running, the ECM monitors the synchronization of the soak timer and the CPU clock. If these two are not synchronized, the ECM interprets this as a malfunction, illuminates the MIL and stores the DTC.
2. If the soak timer activates the ECM even though only a short amount of time has elapsed since the engine switch was turned off, or if the soak timer does not activate the ECM even though a considerable amount of time has elapsed since the engine switch was turned off, the ECM determines that the soak timer is malfunctioning, illuminates the MIL and stores a DTC the next time the engine switch is turned on (IG).

TIMER START-UP MALFUNCTION (CASE 1)

TIMER START-UP MALFUNCTION (CASE 2)

Scheme 102

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine.
7. Idle the engine for 10 minutes or more.
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
9. Read the Pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P2610.
12. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction.
13. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

HINT

1. DTC P2610 is stored if an internal ECM problem is detected. Diagnostic procedures are not required. ECM replacement is necessary.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
2. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Refer to the confirmation driving pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. If no pending DTC is output, the repair has been successfully completed. NEXT --> END

RELATED DTCS

If any EVAP system DTCs are stored, the malfunctioning area can be determined using the table below.

Scheme 103

Note. If the reference pressure difference between the first and second checks is more than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) are stored.

Scheme 104

Scheme 105

Note. In this vehicle EVAP system, turning on the vent valve does not seal off the EVAP system. To check for leaks in the EVAP system, disconnect the air inlet vent hose and apply pressure from the atmospheric side of the canister.

While the engine is running, if a predetermined condition (closed loop, etc.) is met, the purge VSV is opened by the ECM and stored fuel vapors in the canister are purged into the intake manifold. The ECM changes the duty cycle ratio of the purge VSV to control purge flow volume.

The purge flow volume is also determined by the intake manifold pressure. Atmospheric pressure is allowed into the canister through the vent valve to ensure that the purge flow is maintained when the negative pressure (vacuum) is applied to the canister.

The following two monitors run to confirm the appropriate EVAP system operation.

Scheme 106

Scheme 107

Scheme 108

Scheme 109

1. Key-off monitor This monitor checks for EVAP (Evaporative Emission) system leaks and canister pump module malfunctions. The monitor starts 5 hours* after the engine switch is turned off. At least 5 hours are required for the fuel to cool down to stabilize the EVAP pressure, thus making the EVAP system monitor more accurate. The leak detection pump creates negative pressure (vacuum) in the EVAP system and the pressure is measured. Finally, the ECM monitors for leaks from the EVAP system, and malfunctions in both the canister pump module and purge VSV, based on the EVAP pressure. HINT: *: If the engine coolant temperature is not below 35°C (95°F) 5 hours after the engine switch is turned off, the monitor check starts 2 hours later. If it is still not below 35°C (95°F) 7 hours after the engine switch is turned off, the monitor check starts 2.5 hours later.
2. Purge flow monitor The purge flow monitor consists of 2 monitors. The 1st monitor is conducted every time and the 2nd monitor is activated if necessary. The 1st monitor While the engine is running and the purge VSV (Vacuum Switching Valve) is ON (open), the ECM monitors the purge flow by measuring the EVAP pressure change. If negative pressure is not created, the ECM begins the 2nd monitor. The 2nd monitor The vent valve is turned on (closed) and the EVAP pressure is measured. If the variation in the pressure is below 0.5 kPa-g (3.75 mmHg-g), the ECM interprets this as the purge VSV being stuck closed, illuminates the MIL and stores DTC P0441 (2 trip detection logic). Atmospheric pressure check: In order to ensure reliable malfunction detection, the variation between the atmospheric pressures, before and after conduction of the purge flow monitor, is measured by the ECM. Component Operation Canister Contains activated charcoal to absorb EVAP (Evaporative Emissions) generated in fuel tank. Cut-off valve Located in fuel tank. Valve floats and closes when fuel tank 100% full. Purge VSV (Vacuum Switching Valve) Opens or closes line between canister and intake manifold. ECM uses purge VSV to control EVAP purge flow. In order to discharge EVAP absorbed by canister to intake manifold, ECM opens purge VSV. EVAP discharge volume to intake manifold controlled by purge VSV duty cycle ratio (current-carrying time) (Open: ON; Closed: OFF). Refueling valve Controls EVAP pressure from fuel tank to canister. Valve consists of diaphragm, spring and restrictor (diameter: 0.08 inch). When fuel vapor and pressure inside fuel tank increase, valve opens. While EVAP purged, valve closes and restrictor prevents large amount of vacuum from affecting pressure in fuel tank. Valve opened while refueling. Roll-over valve Located in fuel tank. Valve closed by its own weight when vehicle overturns to prevent fuel from spilling out. Soak timer Built into ECM. To ensure accurate EVAP monitor, measures 5 hours (+/-15 min) after engine switch turned off. This allows fuel to cool down, stabilizing EVAP pressure. When approximately 5 hours elapsed, ECM activates ( (Scheme 39)(Scheme 109) ). Canister pump module Consists of (a) to (d) below. Canister pump module cannot be disassembled. (a) Vent valve Vents and closes EVAP system. When ECM turns valve on, EVAP system closed. When ECM turns valve off, EVAP system vented. Negative pressure (vacuum) created in EVAP system to check for EVAP leaks by closing purge VSV, turning on vent valve (closed) and operating leak detection pump ( (Scheme 37)(Scheme 107) ). (b) Canister pressure sensor Indicates pressure as voltages. ECM supplies regulated 5 V to canister pressure sensor, and uses feedback from sensor to monitor EVAP system pressure ( (Scheme 38)(Scheme 108) ). (c) Leak detection pump Creates negative pressure (vacuum) in EVAP system for leak check. (d) Reference orifice Has opening with 0.02 inch diameter. Vacuum produced through orifice by closing purge VSV, turning off vent valve and operating leak detection pump, to monitor reference pressure. Reference pressure indicates small leak of EVAP.

Scheme 110

HINT

After a repair, check Monitor Status by performing the Key-Off Monitor Confirmation and Purge Flow Monitor Confirmation described below.

1. KEY-OFF MONITOR CONFIRMATION Preconditions The monitor will not run unless: The vehicle has been driven for 10 minutes or more (in a city area or on a freeway) The fuel tank is less than 90% full The altitude is less than 2, 438 m (8, 000 ft.) The Engine Coolant Temperature (ECT) is between 4.4°C and 35°C (40°F and 95°F) The Intake Air Temperature (IAT) is between 4.4°C and 35°C (40°F and 95°F) The vehicle remains stationary (the vehicle speed is 0 km/h [0 mph]) Monitor Conditions Allow the engine to idle for at least 5 minutes. Turn the engine switch off and wait for 5 to 10 hours. HINT: Do not start the engine until checking Monitor Status. If the engine is started, the steps described above must be repeated. Monitor Status Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Monitor / Evaporative System. Check the Monitor Status displayed on the Techstream. HINT: If Incomplete is displayed, the monitor is not complete. Make sure that the preconditions have been met, and perform the Monitor Conditions again.
2. PURGE FLOW MONITOR CONFIRMATION (P0441) HINT: Perform this monitor confirmation after the Key-Off Monitor Confirmation shows Complete. Preconditions The monitor will not run unless: The vehicle has been driven for 10 minutes or more (in a city area or on a freeway) The ECT is between 4.4 and 35°C (40 and 95°F) The IAT is between 4.4 and 35°C (40 and 95°F) Monitor Conditions Release the pressure from the fuel tank by removing and reinstalling the fuel cap. Warm the engine up until the ECT reaches higher than 75°C (167°F). Increase the engine speed to 3, 000 RPM once. Allow the engine to idle and turn the A/C on for 1 minute. Monitor Status Turn the engine switch off (if on (IG) or the engine is running). Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Monitor. Check the Monitor Status displayed on the Techstream. HINT: If Incomplete is displayed, the monitor is not complete. Make sure that the preconditions have been met, and perform the Monitor Conditions again.

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

Note. The Techstream is required to conduct the following diagnostic troubleshooting procedure. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

1. Using the Techstream monitor results enables the EVAP (Evaporative Emission) system to be confirmed.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 111

Scheme 112

Scheme 113

Scheme 114

Scheme 115

Scheme 116

Scheme 117

Scheme 118

Scheme 119

Scheme 120

Scheme 121

Scheme 122

Scheme 123

Scheme 124

Scheme 125

Scheme 126

Scheme 127

Scheme 128

Scheme 129

Scheme 130

Scheme 131

Scheme 132

Scheme 133

1. CONFIRM DTC Turn the engine switch off and wait for 10 seconds. Turn the engine switch on (IG). Turn the engine switch off and wait for 10 seconds. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Confirm DTCs and freeze frame data. If any EVAP system DTCs are stored, the malfunctioning area can be determined using the table below. NOTE: If the reference pressure difference between the first and second checks is higher than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) are stored. NEXT: Go to next step
2. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE) NOTE: The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. It takes a maximum of approximately 19 minutes. Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed. If the cut-off valve is closed, the fuel tank leak check is not possible. Do not run the engine during this operation. When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F). Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. HINT: If no pending DTCs are output, perform the Monitor Confirmation (See "Diagnostic Help" menu). After this confirmation, check for pending DTCs. If no DTCs are output, the EVAP system is normal. NEXT: Go to next step
3. PERFORM EVAP SYSTEM CHECK (MANUAL MODE) NOTE: In the Evaporative System Check (Manual Mode), perform the series of 6 Evaporative System Check steps manually using the Techstream. Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed. If the cut-off valve is closed, the fuel tank leak check is not possible. Do not run the engine during this operation. When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F). Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Manual Mode. NEXT: Go to next step
4. PERFORM EVAP SYSTEM CHECK (STEP 1/6) Check the EVAP pressure in step 1/6. RESULT DTCs*1 Test Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure Not yet determined A P0451 EVAP pressure fluctuates by 0.3 kPa-g (2.25 mmHg-g) or higher Canister pressure sensor noise B (P0452 or P0453)*2 EVAP pressure is below 42.1 kPa-a (315.9 mmHg-a) or 123.8 kPa-a (928.3 mmHg-a) or more EVAP pressure deviates 10 kPa (75 mmHg) from actual atmosphere pressure *3 Canister pressure sensor or its circuit has malfunction C *1: These DTCs are already stored in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedures above. *2: If the canister pressure sensor circuit has an open or short, DTC P0452 or P0453 is stored 0.5 seconds after the engine switch is turned on (IG). HINT: *3: Canister pressure sensor standard output range is 70 to 110 kPa-a (525 to 825 mmHg-a). This varies by weather. B --> See step 38 C --> See step 12 A: Go to next step
5. PERFORM EVAP SYSTEM CHECK (STEP 1/6 TO 2/6) Check the EVAP pressure in steps 1/6 and 2/6. RESULT DTCs* Test Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure during step 1/6. Then decreases to reference pressure Not yet determined A P2402 Small difference between EVAP pressures during steps 1/6 and 2/6 Leak detection pump stuck ON B *: These DTCs are already stored in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedures above. HINT: The first reference pressure is the value determined in step 2/6. B --> See step 31 A: Go to next step
6. PERFORM EVAP SYSTEM CHECK (STEP 2/6) HINT: Make a note of the pressures checked in steps (a) and (b) below. (a) Check the EVAP pressure 4 seconds after the leak detection pump is activated*. *: The leak detection pump begins to operate as step 1/6 finishes and step 2/6 starts. (b) Check the EVAP pressure again when it has stabilized. This pressure is the reference pressure. RESULT DTCs* Test Result Suspected Trouble Area Proceed to - EVAP pressure in step (b) between -4.85 kPa-g and -1.057 kPa-g (-36.4 mmHg-g and -7.93 mmHg-g) Not yet determined A P043F and P2401 EVAP pressure in step (b) -1.057 kPa-g (-7.93 mmHg-g) or higher Reference orifice high-flow Leak detection pump stuck OFF B P043E EVAP pressure in step (b) below -4.85 kPa-g (-36.4 mmHg-g) Reference orifice clogged C P2419 EVAP pressure in step (a) higher than -1.057 kPa-g (-7.93 mmHg-g) Vent valve stuck closed Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) D *: These DTCs are already stored in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedures above. B --> See step 11 C --> See step 38 D --> See step 13 A: Go to next step
7. PERFORM EVAP SYSTEM CHECK (STEP 2/6 TO 3/6) Check the EVAP pressure increase in step 3/6. RESULT DTCs* Test Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or higher within 10 seconds of proceeding from step 2/6 to step 3/6 Not yet determined A P2420 No variation in EVAP pressure despite proceeding from step 2/6 to step 3/6 Vent valve stuck open (vent) Canister (charcoal filter inside canister) clogged B P0451 No variation in EVAP pressure during steps 1/6 through 3/6 Canister pressure sensor output value stuck Vent valve broken (valve split in two) Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) C *: These DTCs are already stored in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedures above. B --> See step 27 C --> See step 17 A: Go to next step
8. PERFORM EVAP SYSTEM CHECK (STEP 3/6) Wait until the EVAP pressure change is below 0.1 kPa-g (0.75 mmHg-g) for 30 seconds. Measure the EVAP pressure and record it. HINT: A few minutes are required for the EVAP pressure to become saturated. When there is little fuel in the fuel tank, it takes up to 15 minutes. NEXT: Go to next step
9. PERFORM EVAP SYSTEM CHECK (STEP 4/6) Check the EVAP pressure in step 4/6. RESULT DTCs*1 Test Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or higher within 10 seconds of proceeding from step 3/6 to step 4/6 Not yet determined A P0441*2 EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or higher within 10 seconds of proceeding from step 3/6 to step 4/6 Purge VSV Purge VSV circuit Problems in EVAP hose between purge VSV and intake manifold Problems in EVAP hose between canister and purge VSV ECM B P0441 Variation in EVAP pressure below 0.3 kPa-g (2.25 mmHg-g) for 10 seconds, after proceeding from step 3/6 to step 4/6 Purge VSV stuck closed Purge VSV circuit Canister (charcoal filter inside canister) clogged Problems in EVAP hose between purge VSV and intake manifold Problems in EVAP hose between canister and purge VSV ECM C *1: These DTCs are already stored in the ECM when the vehicle arrives and are confirmed in the Confirm DTC procedures above. *2: This result suggests that due to purge line blockage or purge VSV malfunction, the DTC was stored by the purge flow monitor while the engine was running, or that key-off monitor test result were nearly borderline values. B --> See step 22 C --> See step 17 A: Go to next step
10. PERFORM EVAP SYSTEM CHECK (STEP 5/6) Check the EVAP pressure in step 5/6. Compare the EVAP pressure in step 3/6 and the second reference pressure (step 5/6). RESULT DTCs* Test Result Suspected Trouble Area Proceed to - EVAP pressure (step 3/6) below second reference pressure (step 5/6) Not yet determined (no leakage from EVAP system) A P0441 and P0455 EVAP pressure (step 3/6) higher than [second reference pressure (step 5/6) x 0.2] Purge VSV stuck open EVAP gross leak B P0456 EVAP pressure (step 3/6) higher than second reference pressure (step 5/6) EVAP small leak B *: These DTCs are already stored in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedures above. A --> See step 43 B --> See step 17
11. PERFORM EVAP SYSTEM CHECK (STEP 3/6) Check the EVAP pressure in step 3/6. RESULT DTCs* Test Result Suspected Trouble Area Proceed to P043F EVAP pressure less than [reference pressure] measured at 2/6 Reference orifice high-flow A P2401 EVAP pressure almost same as [reference pressure] measured at 2/6 Leak detection pump stuck OFF B *: These DTCs are already stored in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedures above. HINT: The first reference pressure is the value determined in step 2/6. A --> See step 38 B --> See step 31
12. INSPECT CANISTER PUMP MODULE (CANISTER PRESSURE SENSOR CIRCUIT) Check the canister pressure sensor circuit, referring to DTC P0451 canister pressure sensor circuit inspection procedure. Refer to «INSPECTION PROCEDURE»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostic-codes-p0418-p1605) . NEXT --> See step 48
13. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the engine switch off. Disconnect the canister pump module connector. Apply battery voltage to 9 (VLVB) and 8 (VGND) terminals of the canister pump module. Touch the canister pump module to confirm the vent valve operation. RESULT Test Result Suspected Trouble Area Proceed to Operating Wire harness or connector between vent valve and ECM Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) ECM A Not operating Vent valve B B --> See step 38 A: Go to next step
14. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Disconnect the ECM connector. Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A38-30 (VPMP) - M1-8 (VGND) Always Below 1 ohms A38-30 (VPMP) or M1-8 (VGND) - Body ground Always 10 kohms or higher RESULT Result Suspected Trouble Area Proceed to OK Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) ECM A NG Wire harness or connector between ECM and canister pump module B B --> See step 40 A: Go to next step
15. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND) Turn the engine switch off. Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to M1-6 (MGND) - Body ground Always Below 1 ohms Canister pump module Wire harness or connector between canister pump module and ECM ECM A Always 10 kohms or higher Wire harness or connector between canister pump module and body ground B B --> See step 40 A: Go to next step
16. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Turn the engine switch off. Disconnect the canister pump module connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Tester Connection Condition Specified Condition A38-49 (MPMP) - M1-1 (MTRB) Always Below 1 ohms A38-49 (MPMP) or M1-1 (MTRB) - Body ground Always 10 kohms or higher RESULT Result Suspected Trouble Area Proceed to OK Canister pump module ECM A NG Wire harness or connector between ECM and canister pump module B A --> See step 45 B --> See step 40
17. PERFORM ACTIVE TEST USING TECHSTREAM (PURGE VSV) Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for EVAP Control. Disconnect the hose (connected to the canister) from the purge VSV. Start the engine. Using the Techstream, turn off the purge VSV (Activate the VSV for EVAP Control: OFF). Use your finger to confirm that the purge VSV has no suction. Using the Techstream, turn on the purge VSV (Activate the VSV for EVAP Control: ON). Use your finger to confirm that the purge VSV has suction. RESULT Test Result Suspected Trouble Area Proceed to No suction when purge VSV turned off, and suction applied when turned on Blockage in the purge line is considered (based on result of step 9): Problems with EVAP hose between canister and purge VSV Canister (charcoal filter inside canister) clogged ECM A Leakage is considered (based on result of step 10): Fuel cap Leakage from EVAP line, fuel tank, or canister assembly B Suction applied when purge VSV turned off Purge VSV stuck open C No suction when purge VSV turned on Purge VSV stuck closed Problems with EVAP hose between purge VSV and intake manifold D B --> See step 20 C --> See step 21 D --> See step 23 A: Go to next step
18. INSPECT EVAP HOSE (PURGE VSV - CANISTER) Check for blockages in the EVAP purge line between the purge VSV and canister. OK No blockages in the EVAP purge line between the purge VSV and canister. NG --> See step 44 OK: Go to next step
19. INSPECT CANISTER ASSEMBLY (CHARCOAL FILTER INSIDE CANISTER) Check for filter blockage in the canister assembly. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information) . OK No blockages in the canister assembly. OK --> See step 47 NG --> See step 38
20. CHECK FUEL CAP ASSEMBLY Check that the fuel cap is correctly installed and confirm the fuel cap meets OEM specifications. Tighten the fuel cap firmly (only one click sound could be heard). HINT: If an EVAP tester is available, check the fuel cap using the EVAP tester. Remove the fuel cap and install it onto a fuel cap adapter. Connect an EVAP tester pump hose to the adapter, and pressurize the cap to 3.2 to 3.7 kPa (24 to 28 mmHg) using an EVAP tester pump. Seal the adapter and wait for 2 minutes. Check the pressure. If the pressure is 2 kPa (15 mmHg) or higher, the fuel cap is normal. RESULT Test Result Suspected Trouble Area Proceed to fuel cap correctly installed - A fuel cap loose fuel cap improperly installed Defective fuel cap fuel cap does not meet OEM specifications B Defective fuel cap - B No fuel cap - C A --> See step 37 B --> See step 35 C --> See step 36
21. INSPECT PURGE VSV Turn the engine switch off. Disconnect the purge VSV connector. Disconnect the hose (connected to the canister) from the purge VSV. Start the engine. Use your finger to confirm that the purge VSV has no suction. RESULT Test Result Suspected Trouble Area Proceed to No suction Wire harness or connector between purge VSV and ECM (short to ground) ECM A Suction applied Purge VSV B A --> See step 26 B --> See step 39
22. INSPECT EVAP HOSE (PURGE VSV - CANISTER) Check for blockages in the EVAP purge line between the purge VSV and canister. OK No blockages in the EVAP purge line between the purge VSV and canister. NG --> See step 44 OK: Go to next step
23. CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD) Disconnect the hose (connected to the intake manifold) from the purge VSV. Start the engine. Use your finger to confirm that the hose has suction. RESULT Test Result Suspected Trouble Area Proceed to Suction applied EVAP hose between purge VSV and intake manifold normal Purge VSV Purge VSV power source Wire harness or connector between purge VSV and ECM A No suction Intake manifold port EVAP hose between purge VSV and intake manifold B B --> See step 34 A: Go to next step
24. INSPECT PURGE VSV Remove the purge VSV. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information) . Apply battery voltage to the terminals of the purge VSV. Using an air gun, confirm that air flows from port A to port B. RESULT Test Result Condition Suspected Trouble Area Proceed to Air flows Battery voltage is applied to purge VSV terminals Purge VSV normal Purge VSV power source Wire harness or connector between purge VSV and ECM A No air flow Battery voltage is applied to purge VSV terminals Purge VSV B B --> See step 39 A: Go to next step
25. CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV) Disconnect the purge VSV connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Switch Condition Specified Condition Suspected Trouble Area Proceed to C16-1 - Body ground Engine switch on (IG) 11 to 14 V Purge VSV power source normal Wire harness or connector between purge VSV and ECM A Engine switch on (IG) Other than condition above Wire harness or connectors between purge VSV and battery B B --> See step 40 A: Go to next step
26. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) Disconnect the ECM connector and the purge VSV connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C53-63 (PRG) - C16-2 Always Below 1 ohms C53-63 (PRG) or C16-2 - Body ground Always 10 kohms or higher OK --> See step 47 NG --> See step 40
27. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE) Turn the engine switch off. Disconnect the canister pump module connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Switch Condition Specified Condition Suspected Trouble Area Proceed to M1-9 (VLVB) - Body ground Engine switch on (IG) 11 to 14 V Wire harness or connector between vent valve and ECM Vent valve Canister (charcoal filter inside canister) clogged ECM A Engine switch on (IG) Below 3 V Power source wire harness of vent valve B B --> See step 40 A: Go to next step
28. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the engine switch off. Disconnect the canister pump module connector. Apply battery voltage to 9 (VLVB) and 8 (VGND) terminals of the canister pump module. Touch the canister pump module to confirm the vent valve operation. RESULT Test Result Suspected Trouble Area Proceed to Operating Wire harness or connector between vent valve and ECM Canister (charcoal filter inside canister) clogged ECM A Not operating Vent valve B B --> See step 38 A: Go to next step
29. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Disconnect the ECM connector. Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A38-30 (VPMP) - M1-8 (VGND) Always Below 1 ohms A38-30 (VPMP) or M1-8 (VGND) - Body ground Always 10 kohms or higher RESULT Result Suspected Trouble Area Proceed to OK Canister (charcoal filter inside canister) clogged ECM A NG Wire harness or connector between ECM and canister pump module B B --> See step 40 A: Go to next step
30. INSPECT CANISTER ASSEMBLY (CHARCOAL FILTER INSIDE CANISTER) Check for filter blockage in the canister assembly. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information) . OK No blockages in the canister assembly. OK --> See step 47 NG --> See step 38
31. PERFORM ACTIVE TEST USING TECHSTREAM (LEAK DETECTION PUMP [ALONE]) Turn the engine switch off. Disconnect the canister pump module connector. Turn the engine switch on (IG). Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump. Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Condition Test Result Suspected Trouble Area Proceed to M1-1 (MTRB) - Body ground Leak detection pump turned on and off using the Techstream Below 3 V when OFF 11 to 14 V when ON Wire harness or connector between leak detection pump and body ground Leak detection pump A Below 3 V when OFF and ON Wire harness or connector between leak detection pump and ECM ECM B 9 to 14 V when OFF and ON ECM C B --> See step 33 C --> See step 47 A: Go to next step
32. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND) Turn the engine switch off. Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to M1-6 (MGND) - Body ground Always Below 1 ohms Leak detection pump A Always 10 kohms or higher Wire harness or connector between canister pump module and body ground B A --> See step 38 B --> See step 40
33. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Turn the engine switch off. Disconnect the canister pump module connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A38-49 (MPMP) - M1-1 (MTRB) Always Below 1 ohms A38-49 (MPMP) or M1-1 (MTRB) - Body ground Always 10 kohms or higher RESULT Result Suspected Trouble Area Proceed to OK ECM A NG Wire harness or connector between ECM and canister pump module B A --> See step 47 B --> See step 40
34. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT) Disconnect the EVAP hose from the intake manifold. Start the engine. Use your finger to confirm that the port of the intake manifold has suction. RESULT Test Result Suspected Trouble Area Proceed to Suction applied EVAP hose between intake manifold and purge VSV A No suction Intake manifold B Reconnect the EVAP hose. A --> See step 41 B --> See step 42
35. CORRECTLY REINSTALL OR REPLACE FUEL CAP HINT: When reinstalling the fuel cap, tighten it firmly (only one click sound could be heard). When replacing the fuel cap, use a fuel cap that meets OEM specifications, and install it firmly. NEXT --> See step 48
36. REPLACE FUEL CAP HINT: When replacing the fuel cap, use a fuel cap that meets OEM specifications, and install and tighten it firmly (only one click sound could be heard). NEXT --> See step 48
37. LOCATE EVAP LEAK PART Disconnect the vent hose. Connect an EVAP tester to the canister pump module with the adapter. Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 28 mmHg). Apply soapy water to the piping and connecting parts of the EVAP system. Look for areas where bubbles appear. This indicates the leak point. Repair or replace the leak point. HINT: Disconnect the hose between the canister and the fuel tank from the canister. Block the canister side and conduct an inspection. In this way, the fuel tank can be excluded as an area suspected of causing fuel leaks. NEXT --> See step 48
38. REPLACE CANISTER ASSEMBLY Replace the canister assembly. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information) . NOTE: When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter. NEXT --> See step 48
39. REPLACE PURGE VSV Replace the purge VSV. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information) . NEXT --> See step 48
40. REPAIR OR REPLACE HARNESS OR CONNECTOR NEXT --> See step 48
41. REPAIR OR REPLACE EVAP PURGE LINE (INTAKE MANIFOLD - PURGE VSV) NEXT --> See step 48
42. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT) Check that the EVAP purge port of the intake manifold is not clogged. If necessary, replace the intake manifold. NEXT --> See step 48
43. REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS Repair the malfunctioning areas indicated by the DTCs that had been confirmed when the vehicle was brought in. NEXT --> See step 48
44. REPAIR OR REPLACE EVAP PURGE LINE (PURGE VSV - CANISTER) NEXT --> See step 48
45. REPLACE CANISTER ASSEMBLY Replace the canister assembly. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information) . NOTE: When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter. NEXT: Go to next step
46. PERFORM ACTIVE TEST USING SYSTEM CHECK NOTE: The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. It takes a maximum of approximately 19 minutes. Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed. If the cut-off valve is closed, the fuel tank leak check is not possible. Do not run the engine during this operation. When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F). Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes. RESULT Result Proceed to EVAP system DTCs are output A DTC is not output (Pending DTC is not output) B B --> END A: Go to next step
47. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
48. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION) NOTE: The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. It takes a maximum of approximately 19 minutes. Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed. If the cut-off valve is closed, the fuel tank leak check is not possible. Do not run the engine in this step. When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the temperature below 35°C (95°F). Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes. HINT: If no pending DTCs are output, the repair has been successfully completed. NEXT --> END

When the engine switch is turned on (IG), the battery voltage is applied to the IGSW of the ECM. The output signal from the MREL terminal of the ECM causes a current to flow to the coil, closing the contacts of the integration relay (EFI relay) and supplying power to either terminal +B or +B2 of the ECM.

Scheme 134

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 135

Scheme 136

Scheme 137

Scheme 138

Scheme 139

Scheme 140

1. INSPECT FUSES (IG2 MAIN, EFI MAIN AND IGN) Remove the IG2 MAIN fuse, EFI MAIN fuse and IGN fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition IG2 MAIN fuse Always Below 1 ohms EFI MAIN fuse Always Below 1 ohms IGN fuse Always Below 1 ohms NG --> CHECK FOR SHORT IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE OK: Go to next step
2. INSPECT RELAY (IG2, EFI) Remove the integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1C-1 - 1B-8 Battery voltage not applied 10 kohms or higher Battery voltage applied to terminals 1B-6 and 1B-7 Below 1 ohms 1C-1 - 1B-4 Battery voltage not applied 10 kohms or higher Battery voltage applied to terminals 1B-2 and 1B-3 Below 1 ohms NG --> REPLACE RELAY OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND) Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C53-81 (E1) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (RELAY BLOCK - ECM, MAIN BODY ECU, BATTERY) Disconnect the ECM connector. Disconnect the main body ECU connector. Disconnect the cable from the negative (-) battery terminal. Disconnect the cable from the positive (+) battery terminal. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A38-28 (IGSW) - 1B-8 Always Below 1 ohms 1B-7 - Body ground Always Below 1 ohms Positive (+) battery cable - 1C-1 Always Below 1 ohms E2-11 (IG2D) - 1B-6 Always Below 1 ohms A38-28 (IGSW) or 1B-8 - Body ground Always 10 kohms or higher Positive (+) battery cable or 1C-1 - Body ground Always 10 kohms or higher E2-11 (IG2D) or 1B-6 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. INSPECT ECM (IGSW VOLTAGE) Disconnect the ECM connectors. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A38-28 (IGSW) - C53-81 (E1) Engine switch on (IG) 11 to 14 V OK --> See step 7 NG --> See step 6
6. CHECK SMART KEY SYSTEM (POWER SOURCE MODE DOES NOT CHANGE) Check the smart key system. Refer to «Power Source Mode does not Change»(/toyota/land-cruiser/200-2012-2015/remont/starter/#smart-key-system-for-start-function-diagnostic-codes-symptom-tests) . NG --> REPAIR SMART KEY SYSTEM OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - ECM, BATTERY AND BODY GROUND) Disconnect the ECM connector. Disconnect the cable from the negative (-) battery terminal. Disconnect the cable from the positive (+) battery terminal. Remove the integration relay from the engine room relay block. Disconnect the integration relay connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A38-3 (+B) - 1B-4 Always Below 1 ohms A38-2 (+B2) - 1B-4 Always Below 1 ohms A38-34 (MREL) - 1B-2 Always Below 1 ohms 1C-1 - Positive (+) battery cable Always Below 1 ohms 1B-3 - Body ground Always Below 1 ohms A38-3 (+B) or 1B-4 - Body ground Always 10 kohms or higher A38-2 (+B2) or 1B-4 - Body ground Always 10 kohms or higher A38-34 (MREL) or 1B-2 - Body ground Always 10 kohms or higher 1C-1 or Positive (+) battery cable - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
8. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

The ECM constantly generates 5 V power from the battery voltages supplied to the +B (BATT) terminal to operate the microprocessor. The ECM also provides this power to the sensors through the VC output circuit.

Scheme 141

When the VC circuit is short-circuited, the microprocessor in the ECM and sensors that are supplied with power through the VC circuit are inactivated because the power is not supplied from the VC circuit. Under this condition, the system does not start up and the MIL does not illuminate even if the system malfunctions.

HINT

Under normal conditions, the MIL is illuminated for several seconds when the engine switch is first turned on (IG). The MIL goes off when the engine is started.

Scheme 142

Scheme 143

Scheme 144

Scheme 145

Scheme 146

1. CHECK MIL Check that the Malfunction Indicator Lamp (MIL) lights up when turning the engine switch on (IG). OK MIL lights up NG --> See step 2 OK --> SYSTEM OK
2. CHECK COMMUNICATION BETWEEN TECHSTREAM AND ECM Connect the Techstream to the DLC3. Turn the engine switch on (IG) and Techstream on. Check the communication between the Techstream and ECM. RESULT Result Proceed to Communication is possible A Communication is not possible B A --> See step 16 B: Go to next step
3. CHECK MIL (THROTTLE POSITION SENSOR) Disconnect the throttle body connector. Turn the engine switch on (IG). Check the MIL. RESULT Result Proceed to MIL illuminates A MIL does not illuminate B A --> See step 17 B: Go to next step
4. CHECK MIL (ACCELERATOR PEDAL POSITION SENSOR) Disconnect the accelerator pedal position sensor connector. Turn the engine switch on (IG). Check the MIL. RESULT Result Proceed to MIL illuminates A MIL does not illuminate B A --> See step 18 B: Go to next step
5. CHECK MIL (CANISTER PUMP MODULE) Disconnect the canister pump module connector. Turn the engine switch on (IG). Check the MIL. RESULT Result Proceed to MIL illuminates A MIL does not illuminate B A --> See step 19 B: Go to next step
6. CHECK MIL (AIR SWITCHING VALVE for Bank 1) Disconnect the air switching valve (for Bank 1) connector. Turn the engine switch on (IG). Check the MIL. RESULT Result Proceed to MIL illuminates A MIL does not illuminate B A --> See step 21 B: Go to next step
7. CHECK MIL (AIR SWITCHING VALVE for Bank 2) Disconnect the air switching valve (for Bank 2) connector. Turn the engine switch on (IG). Check the MIL. RESULT Result Proceed to MIL illuminates A MIL does not illuminate B A --> See step 22 B: Go to next step
8. CHECK MIL (POWER STEERING OIL PRESSURE SENSOR) Disconnect the power steering oil pressure sensor connector. Turn the engine switch on (IG). Check the MIL. RESULT Result Proceed to MIL illuminates A MIL does not illuminate B A --> See step 23 B: Go to next step
9. CHECK MIL (CAMSHAFT POSITION SENSOR) Disconnect the camshaft position sensor connector. Turn the engine switch on (IG). Check the MIL. RESULT Result Proceed to MIL illuminates A MIL does not illuminate B A --> See step 24 B: Go to next step
10. CHECK MIL (CRANKSHAFT POSITION SENSOR) Disconnect the crankshaft position sensor connector. Turn the engine switch on (IG). Check the MIL. RESULT Result Proceed to MIL illuminates A MIL does not illuminate B A --> See step 25 B: Go to next step
11. CHECK MIL (VVT SENSOR for Intake Side of Bank 1) Disconnect the VVT sensor (for Intake Side of Bank 1) connector. Turn the engine switch on (IG). Check the MIL. RESULT Result Proceed to MIL illuminates A MIL does not illuminate B A --> See step 26 B: Go to next step
12. CHECK MIL (VVT SENSOR for Exhaust Side of Bank 1) Disconnect the VVT sensor (for Exhaust Side of Bank 1) connector. Turn the engine switch on (IG). Check the MIL. RESULT Result Proceed to MIL illuminates A MIL does not illuminate B A --> See step 27 B: Go to next step
13. CHECK MIL (VVT SENSOR for Intake Side of Bank 2) Disconnect the VVT sensor (for Intake Side of Bank 2) connector. Turn the engine switch on (IG). Check the MIL. RESULT Result Proceed to MIL illuminates A MIL does not illuminate B A --> See step 28 B: Go to next step
14. CHECK MIL (VVT SENSOR for Exhaust Side of Bank 2) Disconnect the VVT sensor (for Exhaust Side of Bank 2) connector. Turn the engine switch on (IG). Check the MIL. RESULT Result Proceed to MIL illuminates A MIL does not illuminate B A --> See step 29 B: Go to next step
15. CHECK HARNESS AND CONNECTOR Disconnect the throttle body connector. Disconnect the accelerator pedal position sensor connector. Disconnect the canister pump module connector. Disconnect the air switching valve (for Bank 1) connector. Disconnect the air switching valve (for Bank 2) connector. Disconnect the power steering oil pressure sensor connector. Disconnect the camshaft position sensor connector. Disconnect the crankshaft position sensor connector. Disconnect the VVT sensor (for Intake Side of Bank 1) connector. Disconnect the VVT sensor (for Exhaust Side of Bank 1) connector. Disconnect the VVT sensor (for Intake Side of Bank 2) connector. Disconnect the VVT sensor (for Exhaust Side of Bank 2) connector. Disconnect the ECM connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C53-80 (VCTA) - Body ground Always 10 kohms or higher A38-57 (VCPA) - Body ground Always 10 kohms or higher A38-59 (VCP2) - Body ground Always 10 kohms or higher C53-66 (VCV2) - Body ground Always 10 kohms or higher C53-67 (VCV1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 20
16. GO TO MIL CIRCUIT. Refer to «MIL Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
17. REPLACE THROTTLE BODY ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
18. REPLACE ACCELERATOR PEDAL POSITION SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
19. REPLACE CANISTER ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information)
20. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
21. REPLACE AIR SWITCHING VALVE. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information)
22. REPLACE AIR SWITCHING VALVE. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information)
23. REPLACE POWER STEERING OIL PRESSURE SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
24. REPLACE CAMSHAFT POSITION SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
25. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
26. REPLACE VVT SENSOR (for Intake Side of Bank 1). Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
27. REPLACE VVT SENSOR (for Exhaust Side of Bank 1). Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
28. REPLACE VVT SENSOR (for Intake Side of Bank 2). Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
29. REPLACE VVT SENSOR (for Exhaust Side of Bank 2). Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

The fuel pump circuit consists of the ECM, fuel pump and fuel pump ECU (which operates the fuel pump). Based on the engine output, the ECM determines the fuel pump speed. The speed is then converted to a duty signal and sent to the fuel pump ECU. Based on the signal sent from the ECM, the fuel pump ECU adjusts the fuel pump operation speed.

Scheme 147

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 148

Scheme 149

Scheme 150

1. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP/SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed. Check whether operating sounds can be heard while operating the fuel pump using the Techstream. OK Operating sounds can be heard from fuel pump. RESULT Result Proceed to NG A OK B B --> See step 13 A: Go to next step
2. INSPECT FUEL PUMP ECU (POWER SOURCE VOLTAGE) Disconnect the fuel pump ECU connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition N3-6 (+B) - Body Ground Engine switch on (IG) 11 to 14 V NG --> See step 9 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (FUEL PUMP ECU - BODY GROUND) Disconnect the fuel pump ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N3-3 (E) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (FUEL PUMP - FUEL PUMP ECU) Disconnect the fuel pump connector. Disconnect the fuel pump ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N1-4 (B2) - N3-1 (FP) Always Below 1 ohms N1-5 (E2) - N3-2 (FP-) Always Below 1 ohms N1-4 (B2) or N3-1 (FP) - Body ground Always 10 kohms or higher N1-5 (E2) or N3-2 (FP-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. INSPECT FUEL PUMP Inspect the fuel pump. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information) . NG --> See step 21 OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (FUEL PUMP ECU - ECM) Disconnect the fuel pump ECU connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N3-5 (FPC) - A38-52 (FPC) Always Below 1 ohms N3-5 (FPC) or A38-52 (FPC) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. REPLACE FUEL PUMP ECU Replace the fuel pump ECU. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information) . NEXT: Go to next step
8. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Check the fuel pump operation. OK Malfunction has been repaired successfully. NG --> See step 19 OK --> END
9. INSPECT EFI NO. 2 RELAY Inspect the EFI NO. 2 relay. Refer to «ON-VEHICLE INSPECTION - Step 3»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NG --> REPLACE EFI NO. 2 RELAY OK: Go to next step
10. CHECK EFI NO. 2 RELAY (POWER SOURCE VOLTAGE) Remove the EFI NO. 2 relay from the engine room relay block. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition EFI NO. 2 relay (1) - Body ground Engine switch on (IG) 11 to 14 V EFI NO. 2 relay (5) - Body ground Always 11 to 14 V NG --> See step 12 OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (EFI NO. 2 RELAY - FUEL PUMP ECU) Remove the EFI NO. 2 relay from the engine room relay block. Disconnect the fuel pump ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition EFI NO. 2 relay (3) - N3-6 (+B) Always Below 1 ohms EFI NO. 2 relay (3) or N3-6 (+B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL PUMP RELAY - BODY GROUND)
12. CHECK HARNESS AND CONNECTOR (EFI NO. 2 RELAY - INTEGRATION RELAY, BATTERY AND BODY GROUND) Disconnect the cable from the negative (-) battery terminal. Disconnect the cable from the positive (+) battery terminal. Remove the EFI NO. 2 relay from the engine room relay block. Remove the integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition EFI NO. 2 relay (1) - 1B-4 Always Below 1 ohms EFI NO. 2 relay (5) - Battery positive (+) terminal Always Below 1 ohms EFI NO. 2 relay (2) - Body ground Always Below 1 ohms EFI NO. 2 relay (1) or 1B-4 - Body ground Always 10 kohms or higher EFI NO. 2 relay (5) or Battery positive (+) terminal - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 20
13. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP) Remove the fuel tank assembly. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information) . Remove the fuel pump from the fuel tank assembly. Clean the fuel pump to completely remove any remaining fuel. Connect the fuel pump connector. WARNING: Confirm that no fuel remains inside or on the outside of the fuel pump. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump Duty. Operate the fuel pump using the active test function and measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Techstream Operation Specified Condition 1 - 2 FPC Duty: 25% 3.2 to 4.05 V FPC Duty: 80% 8.8 to 12.5 V Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. Operate the fuel pump using the active test function and measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Techstream Operation Specified Condition 1 - 2 ON (FPC Duty: 90%) 9.0 to 14.0 V HINT: Be sure to measure the voltage with all of the connectors connected. Before performing this inspection, check that the battery voltage is between 11 and 14 V (not depleted). NG --> See step 16 OK: Go to next step
14. CHECK HARNESS AND CONNECTOR (FUEL PUMP ECU - ECM) Disconnect the fuel pump ECU connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N3-5 (FPC) - A38-52 (FPC) Always Below 1 ohms N3-5 (FPC) or A38-52 (FPC) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
15. REPLACE FUEL PUMP Replace the fuel pump. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information) . NEXT --> See step 17
16. REPLACE FUEL PUMP ECU Replace the fuel pump ECU. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information) . NEXT: Go to next step
17. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Check the fuel pump operation. OK Malfunction has been repaired successfully. NG --> See step 18 OK --> END
18. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
19. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
20. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
21. REPLACE FUEL PUMP. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information)

The fuel injectors are located on the intake manifold. They inject fuel into the cylinders based on the signals from the ECM.

Scheme 151

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 152

1. CHECK INJECTOR ASSEMBLY (POWER SOURCE) Disconnect the fuel injector connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Cylinder Tester Connection Switch Condition Specified Condition No. 1 a5-2 - Body ground Engine switch on (IG) 11 to 14 V No. 2 a1-2 - Body ground Engine switch on (IG) 11 to 14 V No. 3 a6-2 - Body ground Engine switch on (IG) 11 to 14 V No. 4 a2-2 - Body ground Engine switch on (IG) 11 to 14 V No. 5 a7-2 - Body ground Engine switch on (IG) 11 to 14 V No. 6 a3-2 - Body ground Engine switch on (IG) 11 to 14 V No. 7 a8-2 - Body ground Engine switch on (IG) 11 to 14 V No. 8 a4-2 - Body ground Engine switch on (IG) 11 to 14 V NG --> See step 4 OK: Go to next step
2. INSPECT FUEL INJECTOR ASSEMBLY Inspect the fuel injector. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information) . NG --> See step 6 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) Disconnect the fuel injector connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Cylinder Tester Connection Condition Specified Condition No. 1 a5-1 - Body ground Always 10 kohms or higher a5-1 - C53-86 (#10) Always Below 1 ohms No. 2 a1-1 - Body ground Always 10 kohms or higher a1-1 - C53-109 (#20) Always Below 1 ohms No. 3 a6-1 - Body ground Always 10 kohms or higher a6-1 - C53-85 (#30) Always Below 1 ohms No. 4 a2-1 - Body ground Always 10 kohms or higher a2-1 - C53-108 (#40) Always Below 1 ohms No. 5 a7-1 - Body ground Always 10 kohms or higher a7-1 - C53-84 (#50) Always Below 1 ohms No. 6 a3-1 - Body ground Always 10 kohms or higher a3-1 - C53-107 (#60) Always Below 1 ohms No. 7 a8-1 - Body ground Always 10 kohms or higher a8-1 - C53-83 (#70) Always Below 1 ohms No. 8 a4-1 - Body ground Always 10 kohms or higher a4-1 - C53-106 (#80) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
4. INSPECT FUSE (INJ, IG2 MAIN) Remove the INJ fuse and IG2 MAIN fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition INJ fuse Always Below 1 ohms IG2 fuse Always Below 1 ohms NG --> CHECK FOR SHORT IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE OK: Go to next step
5. INSPECT INTEGRATION RELAY (IG2) Inspect the integration relay. Refer to «ON-VEHICLE INSPECTION - Step 1»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NG --> REPLACE INTEGRATION RELAY OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY - FUEL INJECTOR ASSEMBLY)
6. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information__removal)
7. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

The cranking holding control system provides current to the starter when the ECM detects the engine switch start signal (STSW). When the ECM performs a firing judgment, the system cuts current to the starter. When an ECM receives the STSW signal, it turns on the ACC cut, which prevents flickering of the combination meter, clock, audio system, etc. Also, the ECM sends a signal to the ECM STAR terminal. Then the STAR output signal travels through the Park/Neutral Position (PNP) switch to the starter relay, causing the starter to activate.

When the engine is cranking, the starter operation signal is sent to the ECM STA terminal.

Scheme 153

Scheme 154

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 155

Scheme 156

Scheme 157

Scheme 158

Scheme 159

Scheme 160

Scheme 161

1. CHECK CRANKING Check the cranking of the engine. RESULT Result Proceed to Cranking possible and holding control operates A Does not crank B Cranking possible but holding control does not operate C B --> See step 2 C --> See step 11 A --> See step 16
2. READ VALUE USING TECHSTREAM (STARTER SIGNAL) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal. Check the value displayed on the Techstream when the engine switch is turned to the START. OK Engine Switch Position Display (Starter Signal) On (IG) Close START Open NG --> See step 7 OK: Go to next step
3. INSPECT STARTER RELAY (ST) Remove the starter relay (ST) from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 Battery voltage not applied 10 kohms or higher Battery voltage applied to terminals 1 and 2 Below 1 ohms NG --> REPLACE STARTER RELAY (ST) OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (ST RELAY - PNP SWITCH) Remove the starter relay (ST) from the engine room relay block. Disconnect the PNP switch. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition ST relay (1) - C19-5 Always Below 1 ohms ST relay (1) or C19-5 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK STARTER RELAY (POWER SOURCE) Remove the ST relay from the engine room relay block. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition ST relay (2) - ST relay (5) Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER RELAY (ST) - BATTERY, BODY GROUND) OK: Go to next step
6. INSPECT STARTER Inspect the starter. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/starter/#starting-system-3ur-fe-service-information) . NG --> See step 18 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER - STARTER RELAY (ST), BATTERY)
7. INSPECT STARTER CUT RELAY (ST CUT) Remove the starter cut relay (ST CUT) from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 Battery voltage not applied 10 kohms or higher Battery voltage applied to terminals 1 and 2 Below 1 ohms NG --> REPLACE STARTER CUT RELAY (ST CUT) OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (ST CUT RELAY - PNP SWITCH, ECM) Remove the starter cut relay (ST CUT) from the engine room relay block. Disconnect the PNP switch connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition ST CUT relay (5) - C53-16 (STAR) Always Below 1 ohms ST CUT relay (3) - C19-4 Always Below 1 ohms ST CUT relay (5) or C53-16 (STAR) - Body ground Always 10 kohms or higher ST CUT relay (3) or C19-4 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. INSPECT PARK/NEUTRAL POSITION SWITCH Inspect the Park/Neutral Position (PNP) switch. Disconnect the PNP switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 4 (B) - 5 (L) Shift lever in P Below 1 ohms Shift lever in N Below 1 ohms NG --> See step 17 OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (PNP SWITCH - ECM) Disconnect the PNP switch connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C19-5 - A38-46 (STA) Always Below 1 ohms C19-5 or A38-46 (STA) - Body ground Always 10 kohms or higher RESULT Result Proceed to NG A OK B B --> See step 13 A --> REPAIR OR REPLACE HARNESS OR CONNECTOR
11. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - ECM) Disconnect the main body ECU connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E4-4 (STSW) - A38-14 (STSW) Always Below 1 ohms E4-4 (STSW) or A38-14 (STSW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
12. CHECK HARNESS AND CONNECTOR (ST CUT RELAY - PNP SWITCH, ECM) Remove the starter cut relay (ST CUT) from the engine room relay block. Disconnect the PNP switch connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition ST CUT relay (5) - C53-16 (STAR) Always Below 1 ohms ST CUT relay (3) - C19-4 Always Below 1 ohms ST CUT relay (5) or C53-16 (STAR) - Body ground Always 10 kohms or higher ST CUT relay (3) or C19-4 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 15
13. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
14. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Check the starter operation. OK Malfunction has been repaired successfully. NG --> See step 19 OK --> END
15. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
16. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__problem-symptoms-table)
17. REPLACE PARK/NEUTRAL POSITION SWITCH. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/automatic-trans/#automatic-transmission-ab60f-service-information)
18. REPAIR OR REPLACE STARTER. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/starter/#starting-system-3ur-fe-service-information)
19. GO TO SMART KEY SYSTEM (ENGINE DOES NOT START). Refer to «Engine does not Start»(/toyota/land-cruiser/200-2012-2015/remont/starter/#smart-key-system-for-start-function-diagnostic-codes-symptom-tests)

This circuit opens and closes the Intake Air Control Valve (IACV) in response to the engine load in order to increase the intake efficiency (ACIS: Acoustic Control Induction System).

Scheme 162

Scheme 163

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 164

Scheme 165

1. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE VSV FOR ACIS) Disconnect the vacuum hose from port F on the vacuum switching valve (for ACIS). Connect the Techstream to the DLC3. Start the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Active the VSV for Intake Control. Operate the VSV for ACIS. Check the VSV air flow when switching the VSV. OK Test Condition Specified Condition VSV is ON Air from port E flows out through port F VSV is OFF Air from port E flows out through air filter NG --> See step 4 OK: Go to next step
2. CHECK VACUUM HOSES (VACUUM SWITCHING VALVE - INTAKE AIR CONTROL VALVE, INTAKE MANIFOLD) NG --> REPAIR OR REPLACE VACUUM HOSES OK: Go to next step
3. INSPECT INTAKE MANIFOLD (INTAKE AIR CONTROL VALVE) Inspect the intake air control valve. Refer to «ON-VEHICLE INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-intake-system-3ur-fe-inspection) . NG --> See step 9 OK --> See step 7
4. INSPECT VACUUM SWITCHING VALVE Inspect the vacuum switching valve. Refer to «ON-VEHICLE INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/exhaust/#intake-system-exhaust-system-3ur-fe-service-information) . NG --> See step 8 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE - ECM AND INTEGRATION RELAY) Remove the EFI NO. 2 fuse from the engine room relay block. Check the EFI NO. 2 fuse. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition EFI NO. 2 fuse Always Below 1 ohms Reinstall the EFI NO. 2 fuse. Disconnect the intake air control valve connector. Disconnect the ECM connector. Remove the integration relay from the engine room relay block. Disconnect the integration relay connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C38-2 - C53-62 (ACIS) Always Below 1 ohms C38-1 - 1B-4 Always Below 1 ohms C38-2 or C53-62 (ACIS) - Body ground Always 10 kohms or higher C38-1 or 1B-4 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
6. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
7. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__problem-symptoms-table)
8. REPLACE VACUUM SWITCHING VALVE. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/exhaust/#intake-system-exhaust-system-3ur-fe-service-information__removal)
9. REPLACE INTAKE MANIFOLD. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/exhaust/#intake-system-exhaust-system-3ur-fe-service-information__removal)

When the vehicle is being driven with the accelerator pedal depressed, depressing the brake pedal without releasing the accelerator pedal will activate the brake override system to restrict driving torque. The conditions for activating the brake override system as well as the items that are controlled are explained below.

Scheme 166

Activation Conditions

1. Vehicle is running at or above the specified speed.
2. The accelerator pedal is depressed beyond a specified level, and then the brake pedal is depressed.

Note. The vehicle may not enter the brake override system control due to the relation of the accelerator pedal angle and the vehicle's speed.

Items Controlled

1. Driving torque is restricted.

HINT

During brake override system control, the value for the accelerator pedal angle (which is used for engine control) is forcibly reduced to a specified value. For this reason, the Data List value for Accelerator Position will be replaced with a specified value regardless of the actual accelerator pedal angle (Accel Sens. No. 1 Volt %, Accel Sens. No. 2 Volt %)

Deactivation Conditions

1. When the Stop Light Switch turns OFF or the actual accelerator pedal angle increases or decreases beyond the specified range.

Inspection Method

Drive at 10 km/h (6.25 mph), depress the accelerator pedal by 1/2 to 3/4 and keep it in that position. Under these conditions, if the engine speed decreases to 1000 RPM when the brake pedal is depressed, then the brake override system has been activated.

HINT

1. Under normal conditions, the Accelerator Position value changes in response to the Accel Sens. No. 1 Volt % value. For more information on the numerical values, refer to the Data List. Refer to «DATA LIST / ACTIVE TEST»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__data-list-active-test) .
2. If the Data List values of Accelerator Position and Accel Sens. No. 1 Volt % do not match, and the value of Accelerator Position changes but the value of Accel Sens. No. 1 Volt % is constant, this confirms that the brake override system has activated. (Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the driving test.)

Note. The brake override system restricts driving torque if the brake pedal is depressed when driving with the accelerator pedal depressed. If a customer reports experiencing loss of torque after the accelerator and brake pedals have both been intentionally depressed, explain to the customer that this is not a malfunction, and that the customer should avoid depressing both the accelerator and brake pedals at the same time. Example: While operating the accelerator pedal, the customer uses their left foot to operate the brake pedal.

1. CHECK DTC OUTPUT Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: System Select / Health Check. Check DTCs. RESULT Result Proceed to No DTC output A DTC output B B --> GO TO DTC CHART A: Go to next step
2. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH AND ST1) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Stop Light Switch and ST1. Check the Data List indication when the brake pedal is depressed and released. OK Techstream Display Condition Specified Condition Stop Light Switch Brake pedal released OFF Brake pedal depressed ON ST1 Brake pedal released OFF Brake pedal depressed ON NG --> See step 9 OK: Go to next step
3. INSPECT BRAKE PEDAL Inspect and adjust the brake pedal. Refer to «ADJUSTMENT»(/toyota/land-cruiser/200-2012-2015/remont/mechanical-hydraulic/#brake-system-hydraulic-service-information) . HINT: If the stop light switch turns ON too late, the start of brake override system control may be delayed; if it turns ON too soon, brake override system control may begin too early, so conduct inspection of the brake pedal and stop light switch assembly. NG --> REPAIR OR REPLACE BRAKE PEDAL OK: Go to next step
4. READ VALUE USING TECHSTREAM (ACCELERATOR PEDAL POSITION SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Accel Sens. No. 1 Volt % and Accel Sens. No. 2 Volt %. Read the value displayed on the Techstream. OK Techstream Display Condition Specified Condition Accel Sens. No. 1 Volt % Accelerator Pedal Released --> Depressed --> Released Values smoothly change following accelerator pedal operation Accel Sens. No. 2 Volt % HINT: For numerical values of Accel Sens. No. 1 Volt % and Accel Sens. No. 2 Volt %, refer to the Data List. Refer to «DATA LIST / ACTIVE TEST»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__data-list-active-test) . NG --> See step 8 OK: Go to next step
5. READ VALUE USING TECHSTREAM (VEHICLE SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Start the engine. Enter the following menus: Powertrain / Engine and ECT / Data List / Vehicle Speed. Read the value displayed on the Techstream. Standard Techstream Display Condition Specified Condition Vehicle Speed Vehicle stopped, engine running 0 km/h (0 mph) Vehicle running at constant speed between 16.1 to 64.4 km/h (10 to 40 mph) No large fluctuations when driving at a constant speed WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws. HINT: Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test. NG --> See step 7 OK: Go to next step
6. READ VALUE USING TECHSTREAM (FR, FL, RR, RL WHEEL SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Start the engine. Enter the following menus: Chassis / ABS/VSC/TRAC / Data List / FR Wheel Speed, FL Wheel Speed, RR Wheel Speed and RL Wheel Speed. Read the value displayed on the Techstream. Standard Techstream Display Condition Specified Condition FR Wheel Speed FL Wheel Speed RR Wheel Speed RL Wheel Speed Vehicle stopped, engine running 0 km/h (0 mph) Vehicle running at constant speed between 16.1 to 64.4 km/h (10 to 40 mph) No large fluctuations when driving at a constant speed WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws. HINT: Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test. NG --> INSPECT FRONT OR REAR SPEED SENSOR OK --> END
7. GO TO VEHICLE SPEED SENSOR "A". Refer to «DTC P0500: Vehicle Speed Sensor "A"»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostic-codes-p0418-p1605)
8. REPLACE ACCELERATOR PEDAL SENSOR ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
9. INSPECT STOP LIGHT SWITCH ASSEMBLY. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/exterior-lights/#lighting-system-exterior-service-information)

The MIL (Malfunction Indicator Lamp) is used to indicate vehicle malfunction detections by the ECM. When the engine switch is turned on (IG), power is supplied to the MIL circuit, and the ECM provides the circuit ground which illuminates the MIL.

The MIL operation can be checked visually: When the engine switch is first turned on (IG), the MIL should be illuminated and should then turn off when the engine is started. If the MIL remains illuminated or is not illuminated, conduct the following troubleshooting procedure using the Techstream.

Scheme 167

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 168

Scheme 169

1. CHECK THAT MIL IS ILLUMINATED Perform troubleshooting in accordance with the table below. RESULT Result Proceed to MIL remains ON A MIL does not illuminate B B --> See step 5 A: Go to next step
2. CHECK WHETHER MIL TURNS OFF Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Check if any DTCs are output. Note down any DTCs. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Check if the MIL goes off. OK MIL goes off NG --> See step 3 OK --> See step 8
3. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the ECM connector. Turn the engine switch on (IG). Check that the MIL is not illuminated. OK MIL is not illuminated. NG --> See step 4 OK --> See step 9
4. CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM) Disconnect the ECM connector. Disconnect the combination meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A38-24 (W) or E8-12 (CHK) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
5. CHECK THAT MIL IS ILLUMINATED Check if the MIL is illuminated when the engine switch is turned on (IG). OK MIL is illuminated. NG --> See step 6 OK --> See step 10
6. CHECK THAT ENGINE STARTS Turn the engine switch on (IG). Start the engine. RESULT Result Proceed to Engine starts A Engine does not start* B HINT: *: The Techstream cannot communicate with the ECM. B --> See step 13 A: Go to next step
7. CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM) Disconnect the ECM connector. Disconnect the combination meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A38-24 (W) - E8-12 (CHK) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
8. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
9. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
10. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
11. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/gauges-instrument-panels/#meter-gauge-display-service-information)
12. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/gauges-instrument-panels/#meter-gauge-display-service-information)
13. GO TO VC OUTPUT CIRCUIT. Refer to «VC Output Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)

See also:
• FREEZE FRAME DATA
• REMOVAL
• ON-VEHICLE INSPECTION - Step 2
• INSPECTION
• ON-VEHICLE INSPECTION - Step 4
• ON-VEHICLE INSPECTION
• REMOVAL
• ON-VEHICLE INSPECTION
• DTC CHECK / CLEAR
• ON-VEHICLE INSPECTION - Step 3
• DIAGNOSTIC TROUBLE CODE CHART
• HOW TO PROCEED WITH TROUBLESHOOTING
• REMOVAL
• DTC P0335: Crankshaft Position Sensor "A" Circuit; DTC P0337: Crankshaft Position Sensor "A" Circuit Low Input; DTC P0338: Crankshaft Position Sensor "A" Circuit High Input; DTC P0339: Crankshaft Position Sensor "A" Circuit Intermittent
• REMOVAL
• INSPECTION
• CHECK FOR INTERMITTENT PROBLEMS
• DATA LIST / ACTIVE TEST
• ELECTRONIC CIRCUIT INSPECTION PROCEDURE
• CHECKING MONITOR STATUS
• INSPECTION PROCEDURE
• DTC P043E: Evaporative Emission System Reference Orifice Clog Up; DTC P043F: Evaporative Emission System Reference Orifice High Flow; DTC P2401: Evaporative Emission System Leak Detection Pump Control Circuit Low; DTC P2402: Evaporative Emission System Leak Detection Pump Control Circuit High; DTC P2419: Evaporative Emission System Switching Valve Control Circuit Low
• Power Source Mode does not Change
• PROBLEM SYMPTOMS TABLE
• REMOVAL
• ON-VEHICLE INSPECTION
• REMOVAL
• ADJUSTMENT
• INSPECTION
• REMOVAL
• Cranking Holding Function Circuit