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Engine Control System (Diagnostic Codes (P01604-U101) & Circuit Tests)): Diagnosis Lexus ES XV40 facelift

Testing & Diagnostics 44 illustrations ~23297 words

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»(ref-396630-S23203956252011050900000) .
  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. Intake 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 assembly 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 assembly Engine assembly Engine assembly (excess friction) Cranking speed too high Engine assembly Engine assembly (compression loss) There is no initial combustion Fuel supply problem Maintenance of fuel pressure by pressure regulator 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 Intake system connections 51 to 57 Deposits in throttle body Throttle body VVT valve does not return properly Camshaft timing oil control valve assembly VVT system 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 air fuel ratio learning value Air fuel ratio sensor Deviation from fuel injection characteristics Fuel injector for port injection 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 air fuel ratio learning value Fuel injector 88 to 95 96 to 103 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 104 to 106 Fuel system troubleshooting C Injection signal system malfunction Fuel injector Crankshaft position sensor Camshaft position sensor VVT sensor ECM 73 to 77 Intake system troubleshooting Difference between ISC target value and opening angle when idling Engine assembly (compression loss) Valve timing Engine coolant temperature sensor ECM 85 to 87 107 to 109 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) VVT sensor system (including sensor installation) ECM 78 to 84 110 to 116

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  1. CHECK ANY OTHER DTCS OUTPUT AND RECORD FREEZE FRAME DATA (IN ADDITION TO DTC P1604) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / 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 117 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 / Data List / All Data / Immobilizer Fuel Cut. Read the value displayed on the Techstream. OK Immobilizer Fuel Cut is OFF HINT: If the engine is cranked immediately after reconnecting the battery cable (key verification for immobilizer system not completed), the engine cannot be started. Key verification needs to wait for several seconds after turning the engine switch on (IG). NG --> See step 118 OK: Go to next step
  3. CHECK MALFUNCTION CONDITION Confirm the problem symptoms. RESULT Result Proceed to Freeze frame data exists, but the problem symptoms cannot be reproduced and the malfunction conditions are unknown A The problem symptoms can be reproduced, or the malfunction conditions are known B B --> See step 25 A: Go to next step
  4. READ 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»(ref-396630-S23203956252011050900000) . Result Freeze Frame Data Item for DTC P1604 Suspected Area Proceed to Engine Speed Battery Voltage All 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 100 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 (below). *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) E --> See step 51 D --> See step 15 C --> See step 10 A --> CHARGE OR REPLACE BATTERY B: Go to next step
  5. READ 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»(ref-396630-S23203956252011050900000) . Result Freeze Frame Data Item for DTC P1604 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 normally. 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. C --> CHECK AND REPAIR ENGINE OR BATTERY A --> See step 119 B: Go to next step
  6. CHECK CRANKSHAFT POSITION SENSOR INSTALLATION Check the tightening and installation condition of the crankshaft position sensor bolt. Check the connection of the crankshaft position sensor connector. NG --> See step 120 OK: 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 121 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 (Check for Open) Tester Connection Condition Specified Condition B9-1 - NE+ (B12-110) Always Below 1 ohms B9-2 - NE- (B12-111) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B9-1 or NE+ (B12-110) - Body ground Always 10 kohms or higher B9-2 or NE- (B12-111) - 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. Reconnect the ECM connector. Reconnect the crankshaft position sensor connector. 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»(ref-396635-S22138626422011050900000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 122 OK: END (CRANKSHAFT POSITION SENSOR WAS DEFECTIVE)
  10. READ 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»(ref-396630-S23203956252011050900000) . Result Freeze Frame Data Item for DTC P1604 Suspected Area Proceed to Coolant Temp, Ambient Temperature, Intake Air Coolant Temp, Ambient Temperature Fuel Pump/Speed Status Difference between Coolant Temp, Ambient Temperature and Intake Air is 10°C (18°F) or more*1 Coolant Temp is 125°C (257°F) or more, or lower than Ambient Temperature by 15°C (27°F) or more - Engine coolant temperature sensor A Other than above All 5 sets of freeze frame data are ON - B At least 1 of the 5 sets of freeze frame data is OFF Fuel pump control system C Difference between Coolant Temp, Ambient Temperature and Intake Air is less than 10°C (18°F)*2 - At least 1 of the 5 sets of freeze frame data is OFF Fuel pump control system C All 5 sets of freeze frame data are ON - B HINT: *1: A long time had not elapsed after stopping the engine. *2: A long time had elapsed after stopping the engine. C --> See step 124 A --> See step 123 B: Go to next step
  11. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Disconnect the fuel pump connector. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition L13-4 - Body ground Active Test is being performed 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. Reconnect the fuel pump connector. NG --> See step 124 OK: Go to next step
  12. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR 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 Tester Connection Switch Condition Specified Condition B16-2 - Boyd ground Engine switch on (IG) 11 to 14 V B17-2 - Boyd ground Engine switch on (IG) 11 to 14 V B18-2 - Boyd ground Engine switch on (IG) 11 to 14 V B19-2 - Boyd ground Engine switch on (IG) 11 to 14 V B20-2 - Boyd ground Engine switch on (IG) 11 to 14 V B21-2 - Boyd 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. Reconnect the fuel injector connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR - IG2 RELAY) 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 / 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. A --> REPAIR OR REPLACE FUEL LINE B: Go to next step
  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. READ 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»(ref-396630-S23203956252011050900000) . Result Freeze Frame Data Item for DTC P1604 Suspected Area Proceed to Coolant Temp, Ambient Temperature, Intake Air Coolant Temp, Ambient Temperature Long FT Engine Speed Difference between Coolant Temp, Ambient Temperature and Intake Air is 10°C (18°F) or more Coolant Temp is 125°C (257°F) or more, or lower than Ambient Temperature by 15°C (27°F) or more - - Engine coolant temperature sensor A Other than above -15% or less, or +15% or more - Fuel pump control system Fuel injector assembly B -15 to +15% Minimum speed is 300 rpm or more* Engine assembly C Minimum speed is below 300 rpm Fuel system Intake air system D Difference between Coolant Temp, Ambient Temperature and Intake Air is less than 10°C (18°F) - -15% or less, or +15% or more - Fuel pump control system Fuel injector assembly B -15 to +15% Minimum speed is 300 rpm or more* Engine assembly C Minimum speed is below 300 rpm Fuel system Intake air system D HINT: *: Compression loss may have occurred in the engine assembly. D --> See step 18 C --> CHECK AND REPAIR ENGINE ASSEMBLY A --> See step 123 B: Go to next step
  16. INSPECT FUEL INJECTOR ASSEMBLY Check that no carbon is stuck to the fuel injector assembly. 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. READ 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»(ref-396630-S23203956252011050900000) . Result Freeze Frame Data Item for DTC P1604 Result Suspected Area Proceed to Coolant Temp Engine coolant temperature is 40°C (104°F) or less*1 Pressure regulator A Engine coolant temperature is 40 to 90°C (104 to 194°F)*2 Fuel injector assembly B Engine coolant temperature is 90°C (194°F) or more*3 Pressure regulator A HINT: *1: If the engine coolant temperature is 40°C (104°F) 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 (104 to 194°F) (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 (194°F) 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»(ref-396643-S12475227402011050900000) . Attach a fuel pressure gauge and check the fuel pressure after stopping the engine. Standard 147 kPa (1.5 kgf/cm 2 , 21 psi) 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 NG A OK B B --> See step 24 A: REPLACE PRESSURE REGULATOR
  20. CHECK FUEL INJECTOR ASSEMBLY 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 400 ppm or higher A Less than 400 ppm B HINT: If the concentration is 400 ppm or higher, a fuel injector may have a sealing problem. B --> See step 22 A: Go to next step
  21. CHECK FUEL INJECTOR ASSEMBLY Inspect the fuel injectors. Refer to «INSPECTION»(ref-396644-S30708789662011050900000) . Result Result Proceed to NG A OK B A --> See step 125 B: Go to next step
  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 A --> See step 126 B: Go to next step
  23. CHECK INTAKE SYSTEM Check the intake system for vacuum leak. OK No leaks in intake system. NG --> REPAIR OR REPLACE INTAKE 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 A --> END B: Go to next step
  25. CHECK MALFUNCTION CONDITION 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 Fuel pressure of pressure regulator maintained 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 Intake system connections Throttle body Camshaft timing 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 timing 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). E --> See step 58 D --> See step 51 C --> See step 35 B --> See step 32 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* 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: *: The battery may be fully depleted or there may be excess engine friction. C --> See step 30 B --> See step 29 A: Go to next step
  27. INSPECT BATTERY Check the electrolyte quantity. Standard Electrolyte quantity is within the specified range. Inspect the specific gravity. Inspect the specific gravity of each cell. Standard specific gravity 1.25 to 1.29 (electrolyte is at 20°C (68°F)) HINT: If the result is not as specified, recharge or replace the battery. It is not necessary to inspect a maintenance-free battery. Inspect the battery voltage. Turn the engine switch off and turn on (IG) the headlights for 20 to 30 seconds. This will remove the surface charge from the battery. Measure the battery voltage. Standard voltage 12.5 to 12.9 V (electrolyte is at 20°C (68°F)) HINT: If the result is not as specified, recharge or replace the battery. Measure the battery voltage when cranking the engine. Standard Approximately 6 V or higher (0°C (32°F) or higher) HINT: When the battery is depleted, the horn becomes quieter. 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 --> INSPECT STARTER ASSEMBLY
  29. CHECK STARTER ASSEMBLY Remove the starter assembly. Refer to «REMOVAL»(ref-396634-S30810364392011050900000) . Check for starter pinion gear wear and damage. Standard There is no wear or damage. Install the starter assembly. OK --> See step 127 NG: REPLACE STARTER ASSEMBLY
  30. INSPECT BATTERY Check the electrolyte quantity. Standard Electrolyte quantity is within the specified range. Inspect the specific gravity. Inspect the specific gravity of each cell. Standard specific gravity 1.25 to 1.29 (electrolyte is at 20°C (68°F)) HINT: If the result is not as specified, recharge or replace the battery. It is not necessary to inspect a maintenance-free battery. Inspect the battery voltage. Turn the engine switch off and turn on (IG) the headlights for 20 to 30 seconds. This will remove the surface charge from the battery. Measure the battery voltage. Standard voltage 12.5 to 12.9 V (electrolyte is at 20°C (68°F)) HINT: If the result is not as specified, recharge or replace the battery. Measure the battery voltage when cranking the engine. Standard Approximately 6 V or higher (0°C (32°F) or higher) HINT: When the battery is depleted, the horn becomes quieter. NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
  31. INSPECT STARTER ASSEMBLY Inspect the starter assembly. Refer to «INSPECTION»(ref-396634-S42808613622011050900000) . Result Problem Symptom Proceed to OK A NG B A --> See step 119 B: REPLACE STARTER ASSEMBLY
  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 assembly Excess engine friction A Cranking speed is fast (300 rpm or more)* Engine compression loss B HINT: *: If the cranking speed is fast, there may be compression loss. B --> CHECK AND REPAIR ENGINE ASSEMBLY A: Go to next step
  33. INSPECT BATTERY Check the electrolyte quantity. Standard Electrolyte quantity is within the specified range. Inspect the specific gravity. Inspect the specific gravity of each cell. Standard specific gravity 1.25 to 1.29 (electrolyte is at 20°C (68°F)) HINT: If the result is not as specified, recharge or replace the battery. It is not necessary to inspect a maintenance-free battery. Inspect the battery voltage. Turn the engine switch off and turn on (IG) the headlights for 20 to 30 seconds. This will remove the surface charge from the battery. Measure the battery voltage. Standard voltage 12.5 to 12.9 V (electrolyte is at 20°C (68°F)) HINT: If the result is not as specified, recharge or replace the battery. Measure the battery voltage when cranking the engine. Standard Approximately 6 V or higher (0°C (32°F) or higher) HINT: When the battery is depleted, the horn becomes quieter. NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
  34. 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 --> INSPECT STARTER ASSEMBLY
  35. CHECK FUEL INJECTOR ASSEMBLY Using a sound scope or screwdriver, check for an fuel injector assembly operating noise while cranking the engine. OK Fuel injector assembly 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»(ref-396643-S12475227402011050900000) . NG --> See step 46 OK: Go to next step
  37. CHECK SPARK PLUG AND SPARK Check for sparks. Refer to «ON-VEHICLE INSPECTION»(ref-396636-S40474983112011050900000) . 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 assembly. *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). C --> See step 72 B --> See step 40 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»(ref-396643-S12475227402011050900000) . Attach a fuel pressure gauge and check the fuel pressure after stopping the engine. Result Result Proceed to Less than 147 kPa (1.5 kgf/cm 2 ) (5 minutes after stopping the engine) A 147 kPa (1.5 kgf/cm 2 ) or higher (5 minutes after stopping the engine) B* HINT: If the engine cannot be started, check the fuel pressure after cranking the engine. *: From step 72, perform fuel system troubleshooting C (steps 73 to 77). B --> See step 72 A: REPLACE PRESSURE REGULATOR
  40. CHECK FUEL INJECTOR ASSEMBLY After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes. Result Result Proceed to 400 ppm or higher A Less than 400 ppm B* HINT: If the concentration is 400 ppm or higher, a fuel injector may have a sealing problem. *: From step 72, perform fuel system troubleshooting C (steps 73 to 77). B --> See step 72 A --> See step 125
  41. CHECK SPARK PLUG Inspect the spark plugs. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-396636-S19814962752011050900000) . HINT: Even if the spark plug of only one cylinder is malfunctioning, replace the spark plugs of all cylinders. NG --> See step 128 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 / Data List / Engine Speed. Start the engine. While running the engine, read the Engine Speed value. 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 129 OK: Go to next step
  43. CHECK HARNESS AND CONNECTOR (IGNITION COIL POWER SOURCE) Disconnect the ignition coil 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 +B (B26-1) - GND (B26-4) Engine switch on (IG) 11 to 14 V +B (B27-1) - GND (B27-4) Engine switch on (IG) 11 to 14 V +B (B28-1) - GND (B28-4) Engine switch on (IG) 11 to 14 V +B (B29-1) - GND (B29-4) Engine switch on (IG) 11 to 14 V +B (B30-1) - GND (B30-4) Engine switch on (IG) 11 to 14 V +B (B31-1) - GND (B31-4) 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. Reconnect the ignition coil connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL - IG2 RELAY) OK: Go to next step
  44. CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM) Disconnect the ignition coil connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition IGF (B26-2) - IGF1 (B12-106) Always Below 1 ohms IGF (B27-2) - IGF1 (B12-106) Always Below 1 ohms IGF (B28-2) - IGF1 (B12-106) Always Below 1 ohms IGF (B29-2) - IGF1 (B12-106) Always Below 1 ohms IGF (B30-2) - IGF1 (B12-106) Always Below 1 ohms IGF (B31-2) - IGF1 (B12-106) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition IGF (B26-2) or IGF1 (B12-106) - Body ground Always 10 kohms or higher IGF (B27-2) or IGF1 (B12-106) - Body ground Always 10 kohms or higher IGF (B28-2) or IGF1(B12-106) - Body ground Always 10 kohms or higher IGF (B29-2) or IGF1 (B12-106) - Body ground Always 10 kohms or higher IGF (B30-2) or IGF1 (B12-106) - Body ground Always 10 kohms or higher IGF (B31-2) or B12-106 (IGF1) - 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. Reconnect the ECM connector. Reconnect the ignition coil connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  45. CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM) Disconnect the ignition coil connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition IGT1 (B26-3) - IGT1 (B12-40) Always Below 1 ohms IGT2 (B27-3) - IGT2 (B12-39) Always Below 1 ohms IGT3 (B28-3) - IGT3 (B12-38) Always Below 1 ohms IGT4 (B29-3) - IGT4 (B12-37) Always Below 1 ohms IGT5 (B30-3) - IGT5 (B12-36) Always Below 1 ohms IGT6 (B31-3) - IGT6 (B12-35) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition IGT1 (B26-3) or IGT1 (B12-40) - Body ground Always 10 kohms or higher IGT2 (B27-3) or IGT2 (B12-39) - Body ground Always 10 kohms or higher IGT3 (B28-3) or IGT3 (B12-38) - Body ground Always 10 kohms or higher IGT4 (B29-3) or IGT4 (B12-37) - Body ground Always 10 kohms or higher IGT5 (B30-3) or IGT5 (B12-36) - Body ground Always 10 kohms or higher IGT6 (B31-3) or IGT6 (B12-35) - 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 84). Reconnect the ECM connector. Reconnect the ignition coil connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE IGNITION COIL
  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 / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for an operating sound from the fuel pump. Standard Techstream Operation 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 124 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 / 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 124 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 / Data List / Engine Speed. Start the engine. While running the engine, read the Engine Speed value. 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 121 OK: Go to next step
  49. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY POWER SOURCE) Disconnect the fuel injector assembly 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 B16-2 - Body ground Engine switch on (IG) 11 to 14 V B17-2 - Body ground Engine switch on (IG) 11 to 14 V B18-2 - Body ground Engine switch on (IG) 11 to 14 V B19-2 - Body ground Engine switch on (IG) 11 to 14 V B20-2 - Body ground Engine switch on (IG) 11 to 14 V B21-2 - 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. Reconnect the fuel injector assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR - IG2 RELAY) OK: Go to next step
  50. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) Disconnect the fuel injector assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B16-1 - #10 (B12-45) Always Below 1 ohms B17-1 - #20 (B12-85) Always Below 1 ohms B18-1 - #30 (B12-44) Always Below 1 ohms B19-1 - #40 (B12-84) Always Below 1 ohms B20-1 - #50 (B12-43) Always Below 1 ohms B21-1 - #60 (B12-83) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B16-1 or #10 (B12-45) - Body ground Always 10 kohms or higher B17-1 or #20 (B12-85) - Body ground Always 10 kohms or higher B18-1 or #30 (B12-44) - Body ground Always 10 kohms or higher B19-1 or #40 (B12-84) - Body ground Always 10 kohms or higher B20-1 or #50 (B12-43) - Body ground Always 10 kohms or higher B21-1 or #60 (B12-83) - 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. Reconnect the ECM connector. Reconnect the fuel injector assembly connector. OK --> See step 122 NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
  51. INSPECT MASS AIR FLOW METER Inspect the mass air flow meter. Refer to «ON-VEHICLE INSPECTION»(ref-396635-S31956441732011050900000) . NG --> See step 57 OK: Go to next step
  52. CHECK INTAKE SYSTEM Check for air suction in the intake system [vacuum hose disconnection, cracks, damaged gaskets, etc.]. 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 when idling (intake air volume is small) and almost the same as the normal values when racing the engine (intake air volume is high), air leakage may be present. Standard There is no air suction. NG --> REPAIR OR REPLACE INTAKE 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 6°. 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»(ref-396630-S12048003312011050900000) . 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 engine switch on (IG). Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine / 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 Oil Control Valve (OCV) using the Techstream. OK Techstream Operation Specified Condition OFF Normal engine speed ON Soon after OCV switched from OFF to ON, engine idles roughly or stalls HINT: 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 timing 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 --> REPLACE CAMSHAFT TIMING OIL CONTROL VALVE OK: Go to next step
  56. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT EXHAUST LINEAR) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Start the engine and warm it up. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank 1) or Control the VVT Exhaust Linear (Bank 2). Check the engine speed while operating the oil control valve using the Techstream. OK* Techstream Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls Result Result Proceed to NG A OK B HINT: *: From step 72, perform intake system troubleshooting (steps 85 to 87). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 88 to 95). 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 timing 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. B --> See step 72 A: REPLACE CAMSHAFT TIMING OIL CONTROL VALVE
  57. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition VG (B33-5) - VG (B12-72) Always Below 1 ohms E2G (B33-4) - E2G (B12-73) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition VG (B33-5) or VG (B12-72) - 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 intake system troubleshooting (steps 85 to 87). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 88 to 95). Reconnect the ECM connector. Reconnect the mass air flow meter connector. OK --> See step 130 NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
  58. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «INSPECTION»(ref-396635-S12068061292011050900000) . 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 96 to 103), fuel system troubleshooting B (steps 104 to 106), intake system troubleshooting (steps 107 to 109), and ignition system troubleshooting (steps 110 to 116), in that order. NG --> See step 123 OK: Go to next step
  59. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Disconnect the engine coolant temperature sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B13-2 - THW (B12-79) Always Below 1 ohms B13-1 - ETHW (B12-78) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B13-2 or THW (B12-79) - Body ground Always 10 kohms or higher B13-1 or ETHW (B12-78) - 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 96 to 103), fuel system troubleshooting B (steps 104 to 106), intake system troubleshooting (steps 107 to 109), and ignition system troubleshooting (steps 110 to 116), in that order. Reconnect the ECM connector. Reconnect the engine coolant temperature sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  60. INSPECT MASS AIR FLOW METER Inspect the mass air flow meter. Refer to «ON-VEHICLE INSPECTION»(ref-396635-S31956441732011050900000) . 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 96 to 103), fuel system troubleshooting B (steps 104 to 106), intake system troubleshooting (steps 107 to 109), and ignition system troubleshooting (steps 110 to 116), in that order. NG --> See step 130 OK: Go to next step
  61. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition VG (B33-5) - VG (B12-72) Always Below 1 ohms E2G (B33-4) - E2G (B12-73) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition VG (B33-5) or VG (B12-72) - 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 96 to 103), fuel system troubleshooting B (steps 104 to 106), intake system troubleshooting (steps 107 to 109), and ignition system troubleshooting (steps 110 to 116), in that order. Reconnect the ECM connector. Reconnect the mass air flow meter connector. 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 / Data List / Atmosphere Pressure and Long FT #1, #2. Read the value. Result Data List Item Result Suspected Area Proceed to Long FT #1, #2 +25% or more or less than -25% Air fuel ratio sensor Heated oxygen sensor Mass air flow meter Fuel injector assembly ECM A Atmosphere Pressure 80 kPa (600 mmHg) 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 No. 1 and ETCS fuses from the engine room relay block. After 60 seconds or more elapse, install the EFI No. 1 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 / 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 / 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 / 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 Techstream Display Injection Volume Specified Condition AFS Voltage B1S1 AFS Voltage B2S1 +25% 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 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 96 to 103), fuel system troubleshooting B (steps 104 to 106), intake system troubleshooting (steps 107 to 109), and ignition system troubleshooting (steps 110 to 116), in that order. NG --> See step 131 OK: Go to next step
  65. PERFORM SIMULATION TEST Check if the idling speed is stable after starting the engine. OK Idling speed is stable. HINT: After replacing the fuel injector assembly 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 96 to 103), fuel system troubleshooting B (steps 104 to 106), intake system troubleshooting (steps 107 to 109), and ignition system troubleshooting (steps 110 to 116), in that order. NG --> See step 125 OK: See step 130
  66. CHECK FUEL PRESSURE Inspect the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-396643-S12475227402011050900000) . NG --> See step 71 OK: Go to next step
  67. CHECK SPARK PLUG Inspect the spark plugs. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-396636-S19814962752011050900000) . 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 96 to 103), fuel system troubleshooting B (steps 104 to 106), intake system troubleshooting (steps 107 to 109), and ignition system troubleshooting (steps 110 to 116), 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 96 to 103), fuel system troubleshooting B (steps 104 to 106), intake system troubleshooting (steps 107 to 109), and ignition system troubleshooting (steps 110 to 116), in that order. *3: Engine starting trouble may occur if the vehicle is driven extremely short distances repeatedly. C --> See step 133 B --> See step 132 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 assembly. *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 96 to 103), fuel system troubleshooting B (steps 104 to 106), intake system troubleshooting (steps 107 to 109), and ignition system troubleshooting (steps 110 to 116), in that order. C --> See step 72 B --> See step 70 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»(ref-396643-S12475227402011050900000) . Attach a fuel pressure gauge and check the fuel pressure after stopping the engine. Result Result Proceed to Less than 147 kPa (1.5 kgf/cm 2 ) (5 minutes after stopping the engine) A 147 kPa (1.5 kgf/cm 2 ) or higher (5 minutes after stopping the engine) B* HINT: If the engine cannot be started, check the fuel pressure after cranking the engine. *: From step 72, perform fuel system troubleshooting A (steps 96 to 103), fuel system troubleshooting B (steps 104 to 106), intake system troubleshooting (steps 107 to 109), and ignition system troubleshooting (steps 110 to 116), in that order. B --> See step 72 A: REPLACE PRESSURE REGULATOR
  70. CHECK FUEL INJECTOR ASSEMBLY 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 400 ppm or higher A Less than 400 ppm B* HINT: If the concentration is 400 ppm or higher, a fuel injector may have a sealing problem. *: From step 72, perform fuel system troubleshooting A (steps 96 to 103), fuel system troubleshooting B (steps 104 to 106), intake system troubleshooting (steps 107 to 109), and ignition system troubleshooting (steps 110 to 116), in that order. B --> See step 72 A --> See step 125
  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 / 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 96 to 103), fuel system troubleshooting B (steps 104 to 106), intake system troubleshooting (steps 107 to 109), and ignition system troubleshooting (steps 110 to 116), in that order. B --> See step 124 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 84). Result Performed Step Troubleshooting by System Procedure Proceed to Step 45 Ignition system troubleshooting 78 to 84 B If the malfunction could not be identified during the inspection in steps 55, 56 and 57, perform intake air system troubleshooting (steps 85 to 87). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 88 to 95). Result Performed Step Troubleshooting by System Procedure Proceed to Step 55, 56, 57 Intake air system troubleshooting 85 to 87 C Fuel system troubleshooting A 88 to 95 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 96 to 103), fuel system troubleshooting B (steps 104 to 106), intake air system troubleshooting (steps 107 to 109), and ignition system troubleshooting (steps 110 to 116), 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 96 to 103 D Fuel system troubleshooting B 104 to 106 Intake air system troubleshooting 107 to 109 Ignition system troubleshooting 110 to 116 D --> See step 96 C --> See step 85 B --> See step 78 A: Go to next step
  73. INSPECT FUEL INJECTOR ASSEMBLY Inspect the fuel injectors assembly. Refer to «INSPECTION»(ref-396644-S30708789662011050900000) . NG --> See step 125 OK: Go to next step
  74. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY POWER SOURCE) Disconnect the fuel injector assembly 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 B16-2 - Body ground Engine switch on (IG) 11 to 14 V B17-2 - Body ground Engine switch on (IG) 11 to 14 V B18-2 - Body ground Engine switch on (IG) 11 to 14 V B19-2 - Body ground Engine switch on (IG) 11 to 14 V B20-2 - Body ground Engine switch on (IG) 11 to 14 V B21-2 - 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. Reconnect the fuel injector assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR - IG2 RELAY) OK: Go to next step
  75. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) Disconnect the fuel injector assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B16-1 - #10 (B12-45) Always Below 1 ohms B17-1 - #20 (B12-85) Always Below 1 ohms B18-1 - #30 (B12-44) Always Below 1 ohms B19-1 - #40 (B12-84) Always Below 1 ohms B20-1 - #50 (B12-43) Always Below 1 ohms B21-1 - #60 (B12-83) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B16-1 or #10 (B12-45) - Body ground Always 10 kohms or higher B17-1 or #20 (B12-85) - Body ground Always 10 kohms or higher B18-1 or #30 (B12-44) - Body ground Always 10 kohms or higher B19-1 or #40 (B12-84) - Body ground Always 10 kohms or higher B20-1 or #50 (B12-43) - Body ground Always 10 kohms or higher B21-1 or #60 (B12-83) - 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. Reconnect the ECM connector. Reconnect the fuel injector assembly connector. 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»(ref-396635-S22138626422011050900000) . Check the engine start operation. OK Malfunction has been repaired successfully. OK --> END (CRANKSHAFT POSITION SENSOR WAS DEFECTIVE) NG: Go to next step
  77. CHECK VVT SENSOR Replace the VVT sensor. Refer to «REMOVAL»(ref-396635-S34495565042011050900000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 122 OK: END (VVT SENSOR WAS 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 134 OK: Go to next step
  79. CHECK VVT SENSOR Check the tightening and installation condition of the VVT sensor bolt. Check the connection of the VVT sensor connector. OK Sensor is installed correctly. NG --> See step 135 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 (Check for Open) Tester Connection Condition Specified Condition B9-1 - NE+ (B12-110) Always Below 1 ohms B9-2 - NE- (B12-111) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B9-1 or NE+ (B12-110) - Body ground Always 10 kohms or higher B9-2 or NE- (B12-111) - 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. Reconnect the ECM connector. Reconnect the crankshaft position sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  81. CHECK HARNESS AND CONNECTOR (VVT SENSOR FOR INTAKE SIDE - ECM) Disconnect the VVT sensor for intake side connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition VVL+ (B46-1) - VV2+ (B12-67) Always Below 1 ohms VVL- (B46-2) - VV2- (B12-90) Always Below 1 ohms VC (B46-3) - VCV2 (B12-113) Always Below 1 ohms VVR+ (B44-1) - VV1+ (B12-69) Always Below 1 ohms VVR- (B44-2) - VV1- (B12-92) Always Below 1 ohms VC (B44-3) - VCV1 (B12-115) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition VVL+ (B46-1) or VV2+ (B12-67) - Body ground Always 10 kohms or higher VVL- (B46-2) or VV2- (B12-90) - Body ground Always 10 kohms or higher VC (B46-3) or VCV2 (B12-113) - Body ground Always 10 kohms or higher VVR+ (B44-1) or VV1+ (B12-69) - Body ground Always 10 kohms or higher VVR- (B44-2) or VV1- (B12-92) - Body ground Always 10 kohms or higher VC (B44-3) or VCV1 (B12-115) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunction that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the VVT sensor for intake side connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  82. CHECK HARNESS AND CONNECTOR (VVT SENSOR FOR EXHAUST SIDE - ECM) Disconnect the VVT sensor for exhaust side connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition EX+ (B43-1) - EV1+ (B12-68) Always Below 1 ohms EX- (B43-2) - EV1- (B12-91) Always Below 1 ohms VC2 (B43-3) - VCE1 (B12-114) Always Below 1 ohms EX+ (B45-1) - EV2+ (B12-66) Always Below 1 ohms EX- (B45-2) - EV2- (B12-89) Always Below 1 ohms VC2 (B45-3) - VCE2 (B12-112) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition EX+ (B43-1) or EV1+ (B12-68) - Body ground Always 10 kohms or higher EX- (B43-2) or EV1- (B12-91) - Body ground Always 10 kohms or higher VC2 (B43-3) or VCE1 (B12-114) - Body ground Always 10 kohms or higher EX+ (B45-1) or EV2+ (B12-66) - Body ground Always 10 kohms or higher EX- (B45-2) or EV2- (B12-89) - Body ground Always 10 kohms or higher VC2 (B45-3) or VCE2 (B12-112) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunction that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the VVT sensor for exhaust side connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  83. CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(ref-396635-S22138626422011050900000) . Check the engine start operation. OK Malfunction has been repaired successfully. OK --> END (CRANKSHAFT POSITION SENSOR WAS DEFECTIVE) NG: Go to next step
  84. CHECK VVT SENSOR Replace the VVT sensor. Refer to «REMOVAL»(ref-396635-S34495565042011050900000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 122 OK: END (VVT SENSOR WAS DEFECTIVE)
  85. READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / ISC Learning Value. Start the engine and warm it up until the engine coolant temperature stabilizes with the A/C switch and all the accessory switches off. 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 87 A: Go to next step
  86. CHECK CYLINDER COMPRESSION PRESSURE Inspect the compression. Refer to «ON-VEHICLE INSPECTION - Step 9»(ref-396638-S15202789002011050900000) . NG --> REPAIR OR REPLACE ENGINE ASSEMBLY OK: CHECK VALVE TIMING
  87. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «INSPECTION»(ref-396635-S12068061292011050900000) . NG --> See step 123 OK: Go to next step
  88. CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-396643-S12475227402011050900000) . 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 304 to 343 kPa (3.1 to 3.5 kgf/cm 2 ) 5 minutes after stopping engine 147 kPa (1.5 kgf/cm 2 ) or more NG --> See step 94 OK: Go to next step
  89. READ VALUE USING TECHSTREAM (LONG FT #1 AND LONG FT #2) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Long FT #1 and Long FT #2. Result Data List Item Result Suspected Area Proceed to Long FT #1 and Long FT #2 -15 to +15% Wire harness or connector Fuel A +15% or more, or less than -15% Fuel injector for port injection B B --> See step 125 A: Go to next step
  90. 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
  91. 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 134 OK: Go to next step
  92. 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 (Check for Open) Tester Connection Condition Specified Condition B9-1 - NE+ (B12-110) Always Below 1 ohms B9-2 - NE- (B12-111) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B9-1 or NE+ (B12-110) - Body ground Always 10 kohms or higher B9-2 or NE- (B12-111) - 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. Reconnect the ECM connector. Reconnect the crankshaft position sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  93. CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(ref-396635-S22138626422011050900000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 122 OK: END (CRANKSHAFT POSITION SENSOR WAS DEFECTIVE)
  94. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test. 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. A --> REPAIR OR REPLACE FUEL LINE B: Go to next step
  95. INSPECT FUEL PUMP Disconnect the fuel pump connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4 - 5 20°C (68°F) 0.2 to 3.0 ohms 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. Reconnect the fuel pump connector. NG --> See step 136 OK: REPLACE PRESSURE REGULATOR
  96. CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-396643-S12475227402011050900000) . 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 102 A: Go to next step
  97. READ VALUE USING TECHSTREAM (LONG FT #1 AND LONG FT #2) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Long FT #1 and Long FT #2. Result Data List Item Result Suspected Area Proceed to Long FT #1 and Long FT #2 -15 to +15% Wire harness or connector Fuel A +15% or more, or less than -15% Fuel injector assembly B B --> See step 125 A: Go to next step
  98. 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
  99. 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 134 OK: Go to next step
  100. 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 (Check for Open) Tester Connection Condition Specified Condition B9-1 - NE+ (B12-110) Always Below 1 ohms B9-2 - NE- (B12-111) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B9-1 or NE+ (B12-110) - Body ground Always 10 kohms or higher B9-2 or NE- (B12-111) - 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. Reconnect the ECM connector. Reconnect the crankshaft position sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  101. CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(ref-396635-S22138626422011050900000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 122 OK: END (CRANKSHAFT POSITION SENSOR WAS DEFECTIVE)
  102. 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 / 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. A --> REPAIR OR REPLACE FUEL LINE B: Go to next step
  103. INSPECT FUEL PUMP Disconnect the fuel pump connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4 - 5 20°C (68°F) 0.2 to 3.0 ohms 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. Reconnect the fuel pump connector. NG --> See step 136 OK: Go to next step
  104. CHECK PURGE VSV Disconnect the vacuum hose (on the canister side) of the purge VSV. Start the engine. Idle the engine. Disconnect the purge VSV connector. Check if air flows through the purge VSV. Standard Air does not flow Reconnect the purge VSV connector. Reconnect the vacuum hose. HINT: When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-396630-S12048003312011050900000) . NG --> See step 137 OK: Go to next step
  105. CHECK FUEL INJECTOR ASSEMBLY 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 400 ppm or higher A Less than 400 ppm B HINT: If the concentration is 400 ppm or higher, a fuel injector may have a sealing problem. A --> See step 125 B: Go to next step
  106. CHECK INTAKE VALVE Check if carbon is on the intake valves. Result Result Proceed to Carbon present A No carbon present B A --> CLEAN INTAKE VALVE B: Go to next step
  107. READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / ISC Learning Value. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes. 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 109 A: Go to next step
  108. CHECK CYLINDER COMPRESSION PRESSURE Inspect the compression. Refer to «ON-VEHICLE INSPECTION - Step 9»(ref-396638-S15202789002011050900000) . OK --> See step 138 NG: REPAIR OR REPLACE ENGINE ASSEMBLY
  109. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «INSPECTION»(ref-396635-S12068061292011050900000) . NG --> See step 123 OK: Go to next step
  110. 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 134 OK: Go to next step
  111. CHECK VVT SENSOR Check the tightening and installation condition of the VVT sensor bolt. Check the connection of the VVT sensor connector. OK Sensor is installed correctly. NG --> See step 135 OK: Go to next step
  112. 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 (Check for Open) Tester Connection Condition Specified Condition B9-1 - NE+ (B12-110) Always Below 1 ohms B9-2 - NE- (B12-111) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B9-1 or NE+ (B12-110) - Body ground Always 10 kohms or higher B9-2 or NE- (B12-111) - 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. Reconnect the ECM connector. Reconnect the crankshaft position sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  113. CHECK HARNESS AND CONNECTOR (VVT SENSOR FOR INTAKE SIDE - ECM) Disconnect the VVT sensor for intake side connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition VVL+ (B46-1) - VV2+ (B12-67) Always Below 1 ohms VVL- (B46-2) - VV2- (B12-90) Always Below 1 ohms VC (B46-3) - VCV2 (B12-113) Always Below 1 ohms VVR+ (B44-1) - VV1+ (B12-69) Always Below 1 ohms VVR- (B44-2) - VV1- (B12-92) Always Below 1 ohms VC (B44-3) - VCV1 (B12-115) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition VVL+ (B46-1) or VV2+ (B12-67) - Body ground Always 10 kohms or higher VVL- (B46-2) or B12-90 (VV2-) - Body ground Always 10 kohms or higher VC (B46-3) or VCV2 (B12-113) - Body ground Always 10 kohms or higher VVR+ (B44-1) or VV1+ (B12-69) - Body ground Always 10 kohms or higher VVR- (B44-2) or VV1- (B12-92) - Body ground Always 10 kohms or higher VC (B44-3) or VCV1 (B12-115) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunction that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the VVT sensor for intake side connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  114. CHECK HARNESS AND CONNECTOR (VVT SENSOR FOR EXHAUST SIDE - ECM) Disconnect the VVT sensor for exhaust side connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition EX+ (B43-1) - EV1+ (B12-68) Always Below 1 ohms EX- (B43-2) - EV1- (B12-91) Always Below 1 ohms VC2 (B43-3) - VCE1 (B12-114) Always Below 1 ohms EX+ (B45-1) - EV2+ (B12-66) Always Below 1 ohms EX- (B45-2) - EV2- (B12-89) Always Below 1 ohms VC2 (B45-3) - VCE2 (B12-112) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition EX+ (B43-1) or EV1+ (B12-68) - Body ground Always 10 kohms or higher EX- (B43-2) or EV1- (B12-91) - Body ground Always 10 kohms or higher VC2 (B43-3) or VCE1 (B12-114) - Body ground Always 10 kohms or higher EX+ (B45-1) or EV2+ (B12-66) - Body ground Always 10 kohms or higher EX- (B45-2) or EV2- (B12-89) - Body ground Always 10 kohms or higher VC2 (B45-3) or VCE2 (B12-112) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunction that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the VVT sensor for exhaust side connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  115. CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(ref-396635-S22138626422011050900000) . Check the engine start operation. OK Malfunction has been repaired successfully. OK --> END (CRANKSHAFT POSITION SENSOR WAS DEFECTIVE) NG: Go to next step
  116. CHECK VVT SENSOR Replace the VVT sensor. Refer to «REMOVAL»(ref-396635-S34495565042011050900000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 122 OK: END (VVT SENSOR WAS DEFECTIVE)
  117. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-396630-S19862863392011050900000)
  118. REPAIR ENGINE IMMOBILIZER SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-396632-S02527505722011050900000)
  119. CHECK CRANKING HOLDING FUNCTION CIRCUIT. Refer to «Cranking Holding Function Circuit»(ref-396633-S09391807402011050900000)
  120. SECURELY REINSTALL CRANKSHAFT POSITION SENSOR. Refer to «INSTALLATION»(ref-396635-S00215822172011050900000)
  121. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-396635-S22138626422011050900000)
  122. REPLACE ECM. Refer to «REMOVAL»(ref-396635-S35871318042011050900000)
  123. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-396635-S33992661182011050900000)
  124. CHECK FUEL PUMP CONTROL CIRCUIT. Refer to «Fuel Pump Control Circuit»(ref-396633-S09651471912011050900000)
  125. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-396644-S22434791392011050900000)
  126. CLEAN OR REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-396635-S26235626152011050900000)
  127. REPLACE DRIVE PLATE AND RING GEAR. Refer to «REMOVAL - Step 67»(ref-396638-S00213747662011050900000)
  128. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-396645-S17756687572011050900000)
  129. CHECK CRANKSHAFT POSITION SENSOR CIRCUIT. Refer to «DTC P0335: Crankshaft Position Sensor "A" Circuit; DTC P0339: Crankshaft Position Sensor "A" Circuit Intermittent»(ref-396637-S22031586722011050900000)
  130. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-396635-S17842337612011050900000)
  131. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-396640-S01703233552011050900000)
  132. REPLACE SPARK PLUG (ABNORMAL CYLINDER). Refer to «REMOVAL»(ref-396645-S17756687572011050900000)
  133. REPLACE SPARK PLUG (ALL CYLINDER). Refer to «REMOVAL»(ref-396645-S17756687572011050900000)
  134. SECURELY REINSTALL CRANKSHAFT POSITION SENSOR. Refer to «INSTALLATION»(ref-396635-S00215822172011050900000)
  135. SECURELY REINSTALL VVT SENSOR. Refer to «INSTALLATION»(ref-396635-S00398412272011050900000)
  136. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-396644-S29992404232011050900000)
  137. INSPECT PURGE VSV. Refer to «INSPECTION»(ref-396640-S06736081682011050900000)
  138. ADJUST VALVE TIMING. Refer to «REASSEMBLY»(ref-396638-S42214055592011050900000)

HINT

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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. The throttle actuator current (Throttle Motor Current) and the throttle actuator duty ratio (Throttle Motor Duty (Open) / Throttle Motor Duty (Close)) can be read using the Techstream. However, the ECM shuts off the throttle actuator current when the electronic throttle control system malfunctions.

Scheme 80

Scheme 80: PROCEDURE
Scheme 80: PROCEDURE
  1. INSPECT THROTTLE BODY ASSEMBLY (RESISTANCE OF THROTTLE ACTUATOR) Disconnect the throttle body assembly connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition M+ (2) - M- (1) 20°C (68°F) 0.3 to 100 ohms Reconnect the throttle body assembly connector. NG --> See step 5 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (THROTTLE BODY ASSEMBLY - ECM) Disconnect the throttle body assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Condition Specified Condition M+ (B39-2) - M+ (B12-19) Always Below 1 ohms M- (B39-1) - M- (B12-18) Always Below 1 ohms Standard resistance (Check for short) Tester Connection Condition Specified Condition M+ (B39-2) or M+ (B12-19) - Body ground Always 10 kohms or higher M- (B39-1) or M- (B12-18) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the throttle body assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (THROTTLE BODY ASSEMBLY - ECM) OK: Go to next step
  3. INSPECT THROTTLE BODY ASSEMBLY (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 ASSEMBLY OK: Go to next step
  4. INSPECT THROTTLE BODY ASSEMBLY (THROTTLE VALVE) Check if the throttle valve opens and closes smoothly. OK Throttle valve opens and closes smoothly. OK --> See step 6 NG: Go to next step
  5. REPLACE THROTTLE BODY ASSEMBLY. Refer to «REMOVAL»(ref-396635-S26235626152011050900000)
  6. REPLACE ECM. Refer to «REMOVAL»(ref-396635-S35871318042011050900000)

HINT

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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 81

Scheme 81: PROCEDURE
Scheme 81: PROCEDURE
  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 / 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 5 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»(ref-396630-S23203956252011050900000) . 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. NEXT: Go to next step
  4. READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Remove the EFI NO. 1 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 6 OK: END
  5. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-396630-S19862863392011050900000)
  6. REPLACE THROTTLE BODY ASSEMBLY. Refer to «REMOVAL»(ref-396635-S26235626152011050900000)

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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.

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

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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.

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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.

HINT

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction. Refer to «FREEZE FRAME DATA»(ref-396630-S23203956252011050900000) .
  1. These DTCs relate to the Accelerator Pedal Position (APP) sensor.

Scheme 82

Scheme 82: PROCEDURE
Scheme 82: PROCEDURE

Scheme 83

Scheme 83
Scheme 83
  1. READ VALUE USING TECHSTREAM (ACCEL SENSOR OUT NO. 1 AND NO. 2) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Accel Sensor Out No. 1 and Accel Sensor Out No. 2. Read the value displayed on the Techstream. Standard voltage Accelerator Pedal Condition 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 5.0 V OK --> CHECK FOR INTERMITTENT PROBLEMS NG: Go to next step
  2. CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL POSITION SENSOR - ECM) Disconnect the A2 Accelerator Pedal Position (APP) sensor connector. Disconnect the A10 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition VPA (A2-6) - VPA (A10-55) Below 1 ohms EPA (A2-5) - EPA (A10-59) Below 1 ohms VCPA (A2-4) - VCPA (A10-57) Below 1 ohms VPA2 (A2-3) - VPA2 (A10-56) Below 1 ohms EPA2 (A2-2) - EPA2 (A10-60) Below 1 ohms VCP2 (A2-1) - VCP2 (A10-58) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition VPA (A2-6) or VPA (A10-55) - body ground 10 kohms or higher EPA (A2-5) or EPA (A10-59) - body ground 10 kohms or higher VCPA (A2-4) or VCPA (A10-57) - body ground 10 kohms or higher VPA2 (A2-3) or VPA2 (A10-56) - body ground 10 kohms or higher EPA2 (A2-2) or EPA2 (A10-60) - body ground 10 kohms or higher VCP2 (A2-1) or VCP2 (A10-58) - body ground 10 kohms or higher Reconnect the APP sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. INSPECT ACCELERATOR PEDAL POSITION SENSOR (VCPA AND VCP2 VOLTAGE) Disconnect the A2 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 Specified Condition VCPA (A2-4) - EPA (A2-5) 4.5 to 5.5 V VCP2 (A2-1) - EPA2 (A2-2) 4.5 to 5.5 V Reconnect the APP sensor connector. NG --> See step 6 OK: Go to next step
  4. REPLACE ACCELERATOR PEDAL ROD ASSEMBLY 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 the DTCs. Refer to «DTC CHECK / CLEAR»(ref-396630-S12048003312011050900000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Trouble Code. Read the DTCs. Result Display (DTC Output) Proceed to P2120, P2122, P2123, P2125, P2127, P2128, and/or P2138 A No output B A --> See step 7 B: SYSTEM IS OK
  6. REPLACE ECM. Refer to «REMOVAL»(ref-396635-S35871318042011050900000)
  7. REPLACE ECM. Refer to «REMOVAL»(ref-396635-S35871318042011050900000)

HINT

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction. Refer to «FREEZE FRAME DATA»(ref-396630-S23203956252011050900000) .
  2. This DTC relates to the Accelerator Pedal Position (APP) sensor.

HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F Sensor function provided in the Active Test. The Control the Injection Volume for A/F Sensor function can help to determine whether the Air-fuel Ratio (A/F) sensor, Heated Oxygen (HO2) sensor and other potential trouble areas are malfunctioning.

The following instructions describe how to conduct the Control the Injection Volume for A/F Sensor operation using the Techstream.

  1. Connect the Techstream to the DLC3.
  2. Start the engine and turn the Techstream on.
  3. Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
  4. On the Techstream, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor.
  5. Perform the Control the Injection Volume for A/F Sensor operation with the engine in an idling condition (press the RIGHT or LEFT button to change the fuel injection volume).
  6. Monitor the output voltages of the A/F and HO2 sensors (AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the Techstream.

HINT

  1. The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by 12.5 % or increases the injection volume by 25 %.
  1. Each sensor reacts in accordance with increases in the fuel injection volume.
Techstream Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1S1 or AFS Voltage B2S1 (A/F)+25 %RichLess than 3.1 V
AFS Voltage B1S1 or AFS Voltage B2S1 (A/F)12.5 %LeanMore than 3.4 V
O2S B1S2 or O2S B2S2 (HO2)+25 %RichMore than 0.55 V
O2S B1S2 or O2S B2S2 (HO2)12.5 %LeanLess than 0.4 V

Note. The Air-Fuel Ratio (A/F) sensor has an output delay of a few seconds and the HO2S (sensor 2) output has a maximum output delay of 20 seconds.

Case Air Fuel Ratio Sensor (Sensor 1) Output Voltage Heated Oxygen Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 Air fuel ratio sensor Air fuel ratio sensor heater Air fuel ratio sensor circuit 3 Heated oxygen sensor Heated oxygen sensor heater Heated oxygen sensor circuit 4 Fuel pressure Gas leakage from exhaust system (Air fuel ratio extremely lean or rich)

Scheme 84

Scheme 84
Scheme 84

Scheme 85

Scheme 85
Scheme 85

Scheme 86

Scheme 86
Scheme 86
  1. Following the Control the Injection Volume for A/F Sensor procedure enables technicians to check and graph the voltage outputs of both the A/F and HO2 sensors.
  2. To display the graph, enter the following menus on the Techstream: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / AFS Voltage B1S1 or AFS Voltage B2S1 and O2S B1S2 or O2S B2S2 then press the graph button on the Data List view.

HINT

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction. Refer to «FREEZE FRAME DATA»(ref-396630-S23203956252011050900000) .
  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.

Scheme 87

Scheme 87: PROCEDURE
Scheme 87: PROCEDURE

Scheme 88

Scheme 88
Scheme 88

Scheme 89

Scheme 89
Scheme 89
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P2195, P2196, 2197 OR P2198) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. Result Display (DTC Output) Proceed to P2195, P2196, P2197, or P2198 A P2195, P2196, P2197, or P2198 and other DTCs 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 18 A: Go to next step
  2. READ VALUE USING TECHSTREAM (TEST VALUE OF A/F SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-396630-S12048003312011050900000) . Drive the vehicle in accordance with the drive pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Monitor / O2 Sensor. Check that the status of O2 Sensor is Complete. If the status is still Incomplete, perform the drive pattern increasing the vehicle speed and using the second gear to decelerate the vehicle. Enter the following menus: Powertrain / Engine / 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 (1.4 mA or more, and less than 3.6 mA) A Outside normal range (Less than 1.4 mA, or 3.6 mA or more) B B --> See step 15 A: Go to next step
  3. 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 A/F sensor at an engine speed of 2500 rpm for 90 seconds. Enter the following menus: Powertrain / Engine / Data List / All Data / AFS Voltage B1S1 or AFS Voltage B2S1 and Engine Speed, then press the Record button. Check the A/F sensor voltage three times, when the engine is in each of the following conditions: While idling (check for at least 30 seconds) (Condition "A"). At an engine speed of approximately 2500 rpm (without any sudden changes in engine speed) (Condition "B"). Raise the engine speed to 4000 rpm and then quickly release the accelerator pedal so that the throttle valve is fully closed (Condition "C"). Standard Condition A/F Sensor Voltage Variations Reference "A" and "B" Remains at approximately 3.3 V Between 3.1 V and 3.5 V "C" Increases to 3.8 V or more This occurs during engine deceleration (when fuel cut performed) HINT: For more information, see the diagrams below. HINT: If the output voltage of the A/F sensor remains at approximately 3.3 V (see Malfunction Condition diagram above) under any conditions, including those above, the A/F sensor may have an open circuit. (This will also happen if the A/F sensor heater has an open circuit.) If the output voltage of the A/F sensor remains at either approximately 3.8 V or more, or 2.8 V or less (see Malfunction Condition diagram above) under any conditions, including those above, the A/F sensor may have a short circuit. The ECM stops fuel injection (fuel cut) during engine deceleration. This causes a lean condition and results in a momentary increase in the A/F sensor output voltage. When the vehicle is driven: The output voltage of the A/F sensor may be below 2.8 V during fuel enrichment. For the vehicle, this translates to a sudden increase in speed with the accelerator pedal fully depressed when trying to overtake another vehicle. The A/F sensor is functioning normally. The A/F sensor is a current output element; therefore, the current is converted into a voltage inside the ECM. Measuring the voltage at the connectors of the A/F sensor or ECM will show a constant voltage result. NG --> See step 10 OK: Go to next step
  4. 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»(ref-396630-S12048003312011050900000) . Turn the engine switch off and wait for 30 seconds. 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 drive pattern described in the Confirmation Driving Pattern. NEXT: Go to next step
  5. CHECK WHETHER DTC OUTPUT RECURS (DTC 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 / Utility / All Readiness. Input the DTC: P2195, P2196, P2197 or P2198. Check the DTC judgement result. Result Result Proceed to ABNORMAL (DTC P2195, P2196, P2197 or P2198 is output) A NORMAL (DTC is not output) B B --> See step 9 A: Go to next step
  6. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-396640-S01703233552011050900000) . NEXT: Go to next step
  7. 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»(ref-396630-S12048003312011050900000) . Turn the engine switch off and wait for 30 seconds. 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 drive pattern described in the Confirmation Driving Pattern. NEXT: Go to next step
  8. CHECK WHETHER DTC OUTPUT RECURS (DTC 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 / Utility / All Readiness. Input the DTC: P2195, P2196, P2197 or P2198. Check the DTC judgement 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
  9. CONFIRM IF VEHICLE HAS RUN OUT OF FUEL IN PAST Has the vehicle run out of fuel in the past? NO --> See step 20 YES: DTC CAUSED BY RUNNING OUT OF FUEL
  10. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE). Refer to «PROCEDURE - Step 1»(ref-396637-S24732566802011050900000) NG --> See step 21 OK: Go to next step
  11. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM) Disconnect the B3 and B4 A/F sensor connectors. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Specified Condition +B (B3-2) - Body ground 9 to 14 V +B (B4-2) - Body ground 9 to 14 V Turn the engine switch off. Disconnect the B12 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition HT (B3-1) - HA1A (B12-86) Below 1 ohms AF+ (B3-3) - A1A+ (B12-93) Below 1 ohms AF- (B3-4) - A1A- (B12-116) Below 1 ohms HT (B4-1) - HA2A (B12-109) Below 1 ohms AF+ (B4-3) - A2A+ (B12-120) Below 1 ohms AF- (B4-4) - A2A- (B12-119) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition HT (B3-1) or HA1A (B12-86) - Body ground 10 kohms or higher AF+ (B3-3) or A1A+ (B12-93) - Body ground 10 kohms or higher AF- (B3-4) or A1A- (B12-116) - Body ground 10 kohms or higher HT (B4-1) or HA2A (B12-109) - Body ground 10 kohms or higher AF+ (B4-3) or A2A+ (B12-120) - Body ground 10 kohms or higher AF- (B4-4) or A2A- (B12-119) - Body ground 10 kohms or higher Reconnect the ECM connector. Reconnect the A/F sensor connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  12. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. OK No leakage from air induction system. NG --> REPAIR OR REPLACE AIR INDUCTION SYSTEM OK: Go to next step
  13. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-396643-S12475227402011050900000) . NG --> REPAIR OR REPLACE FUEL SYSTEM OK: Go to next step
  14. INSPECT FUEL INJECTOR ASSEMBLY Check the injector injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION»(ref-396644-S30708789662011050900000) . NG --> See step 22 OK: Go to next step
  15. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-396640-S01703233552011050900000) . NEXT: Go to next step
  16. 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»(ref-396630-S12048003312011050900000) . Turn the engine switch off and wait for 30 seconds. 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 drive pattern described in the Confirmation Driving Pattern. NEXT: Go to next step
  17. CHECK WHETHER DTC OUTPUT RECURS (DTC 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 / Utility / All Readiness. Input the DTC: P2195, P2196, P2197 or P2198. Check the DTC judgement 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
  18. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-396630-S19862863392011050900000)
  19. REPLACE ECM. Refer to «REMOVAL»(ref-396635-S35871318042011050900000)
  20. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-396630-S16310885982011050900000)
  21. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-396640-S01703233552011050900000)
  22. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-396644-S22434791392011050900000)

HINT

Techstream only

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F sensor operation provided in the Active Test. The Control the Injection Volume for A/F sensor function can help to determine whether the Air-Fuel Ratio (A/F) sensor, Heated Oxygen (HO2) sensor and other potential trouble areas are malfunctioning.

The following instructions describe how to conduct the Control the Injection Volume for A/F sensor operation using the Techstream.

  1. Connect the Techstream to the DLC3.
  2. Start the engine and turn the Techstream on.
  3. Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
  4. On the Techstream, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F sensor.
  5. Perform the Control the Injection Volume for A/F sensor operation with the engine in an idling condition (press the RIGHT or LEFT button to change the fuel injection volume).
  6. Monitor the output voltages of the A/F and HO2 sensors (AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the Techstream.

HINT

  1. The Control the Injection Volume for A/F sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%.
  1. Each sensor reacts in accordance with increases and decreases in the fuel injection volume.
Techstream Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1S1 or AFS Voltage B2S1 (A/F)+25%RichLess than 3.1 V
AFS Voltage B1S1 or AFS Voltage B2S1 (A/F)12.5%LeanMore than 3.4 V
O2S B1S2 or O2S B2S2 (HO2)+25%RichMore than 0.55 V
O2S B1S2 or O2S B2S2 (HO2)12.5%LeanLess than 0.4 V

Note. The Air-Fuel Ratio (A/F) sensor has an output delay of a few seconds and the Heated Oxygen (HO2) sensor has a maximum output delay of approximately 20 seconds.

Case Air Fuel Ratio Sensor (Sensor 1) Output Voltage Heated Oxygen Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 Air fuel ratio sensor Air fuel ratio sensor heater Air fuel ratio sensor circuit 3 Heated oxygen sensor Heated oxygen sensor heater Heated oxygen sensor circuit 4 Fuel pressure Gas leakage from exhaust system (Air fuel ratio extremely lean or rich)

  1. Following the Control the Injection Volume for A/F sensor procedure enables technicians to check and graph the output voltages of both the A/F and HO2 sensors.
  2. To display the graph, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1S1 or AFS Voltage B2S1 and O2S B1S2 or O2S B2S2 then press the graph button on the Data List view.

HINT

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction. Refer to «FREEZE FRAME DATA»(ref-396630-S23203956252011050900000) .

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  1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Disconnect the B3 or B4 A/F sensor connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Bank 1 sensor 1) Tester Connection Condition Specified Condition HT (1) - +B (2) 20°C (68°F) 1.8 to 3.4 ohms HT (1) - AF- (4) - 10 kohms or higher Standard resistance (Bank 2 sensor 1) Tester Connection Condition Specified Condition HT (1) - +B (2) 20°C (68°F) 1.8 to 3.4 ohms HT (1) - AF- (4) - 10 kohms or higher Reconnect the A/F sensor connector. NG --> See step 8 OK: Go to next step
  2. INSPECT A/F FUSE Remove the A/F fuse from the engine room junction block. Measure the A/F fuse resistance. Standard resistance Below 1 ohms Reinstall the A/F fuse. NG --> REPLACE A/F FUSE OK: Go to next step
  3. INSPECT ENGINE ROOM JUNCTION BLOCK (A/F RELAY) Remove the engine room junction block from the engine room relay block. Inspect the A/F relay. Measure the A/F relay resistance. Standard resistance Tester Connection Specified Condition 1G-1 - 1A-4 10 kohms or higher 1G-1 - 1A-4 Below 1 ohms (Apply battery voltage between terminals 1E-6 and 1E-10) Reinstall the engine room junction block. NG --> REPLACE ENGINE ROOM JUNCTION BLOCK OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM) Disconnect the B3 and B4 A/F sensor connectors. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Specified Condition +B (B3-2) - Body ground 9 to 14 V +B (B4-2) - Body ground 9 to 14 V Turn the engine switch off. Disconnect the B12 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition HT (B3-1) - HA1A (B12-86) Below 1 ohms AF+ (B3-3) - A1A+ (B12-93) Below 1 ohms AF- (B3-4) - A1A- (B12-116) Below 1 ohms HT (B4-1) - HA2A (B12-109) Below 1 ohms AF+ (B4-3) - A2A+ (B12-120) Below 1 ohms AF- (B4-4) - A2A- (B12-119) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition HT (B3-1) or HA1A (B12-86) - Body ground 10 kohms or higher AF+ (B3-3) or A1A+ (B12-93) - Body ground 10 kohms or higher AF- (B3-4) or A1A- (B12-116) - Body ground 10 kohms or higher HT (B4-1) or HA2A (B12-109) - Body ground 10 kohms or higher AF+ (B4-3) or A2A+ (B12-120) - Body ground 10 kohms or higher AF- (B4-4) or A2A- (B12-119) - Body ground 10 kohms or higher Reconnect the ECM connector. Reconnect the A/F sensor connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. REPLACE AIR FUEL RATIO SENSOR Replace air fuel ratio sensor. Refer to «COMPONENTS»(ref-396640-S23014821542011050900000) . NEXT: Go to next step
  6. PERFORM CONFIRMATION DRIVING PATTERN NEXT: Go to next step
  7. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Select the following menu items: Powertrain / Engine / Trouble Codes / Pending. Read the pending DTCs. Result Result Proceed to No output A P2237, P2238, P2239, P2240, P2241, P2242, P2252, P2253, P2255 or P2256 B B --> See step 9 A: END
  8. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-396640-S01703233552011050900000)
  9. REPLACE ECM. Refer to «REMOVAL»(ref-396635-S35871318042011050900000)

DTC SUMMARY

DTC No.Monitoring ItemDTC Detection ConditionTrouble AreaDetection TimingDetection Logic
P2420Vent valve stuck open (vent)The following condition is met during key-off EVAP monitor EVAP pressure change when vent valve is closed (ON) is less than 0.3 kPa (2.25 mmHg)Canister pump module (0.02 inch orifice, leak detection pump, vent valve) Connector / wire harness (Canister pump module - ECM) ECMEngine switch off2 trip

Refer to the EVAP system. Refer to EVAP System .

DTC No.Monitoring ItemDTC Detection ConditionTrouble AreaDetection TimingDetection Logic
P2610Soak timer (built into ECM)ECM internal malfunctionECMEngine running2 trip

HINT

  1. DTC P2610 is set if an internal ECM problem is detected. In this case, diagnostic procedures are not required. ECM replacement is required.
  2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction. Refer to «FREEZE FRAME DATA»(ref-396630-S23203956252011050900000) .

Note. Techstream is required to conduct the following diagnostic troubleshooting 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. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction. Refer to «FREEZE FRAME DATA»(ref-396630-S23203956252011050900000) .

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  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. Select the following menu items: Powertrain / Engine / Trouble Codes. Confirm DTCs and freeze frame data. If any EVAP system DTCs are set, the malfunctioning area can be determined using the table below. NOTE: If the reference pressure difference between the first and second checks is greater 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 (AUTO OPERATION) NOTE: The Evaporative System Check (Automatic Mode) consists of 5 steps performed automatically by the Techstream. It takes a maximum of approximately 18 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 temperature below 35°C (95°F). Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-396630-S12048003312011050900000) . On the Techstream, select the following menu items: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by selecting the following menu items: Powertrain / Engine / Trouble Codes / Pending. HINT: If no pending DTCs are displayed, perform the MONITOR CONFIRMATION (see "Diagnostic Help" menu). After this confirmation, check for pending DTCs. If no DTCs are displayed, the EVAP system is normal. NEXT: Go to next step
  3. PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION) NOTE: In the Evaporative System Check (Manual Mode), perform the series of 5 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, 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 temperature below 35°C (95°F). Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-396630-S12048003312011050900000) . Select the following menu items: Powertrain / Engine / Utility / Evaporative System Check / Manual Mode. NEXT: Go to next step
  4. PERFORM EVAP SYSTEM CHECK (STEP 1/5) Check the EVAP pressure in step 1/5. Result DTCs* Test Results Suspected Trouble Areas Proceed to - Virtually no variation in EVAP pressure Not yet determined A P0451 EVAP pressure fluctuates by +-0.3 kPa (2.25 mmHg) or more Canister pressure sensor noise B *: The DTCs relating to the EVAP system displayed on the Techstream when checking. B --> See step 29 A: Go to next step
  5. PERFORM EVAP SYSTEM CHECK (STEP 1/5 TO 2/5) Check the EVAP pressure in steps 1/5 and 2/5. Result DTCs* Test Results Suspected Trouble Areas Proceed to - Virtually no variation in EVAP pressure during step 1/5. Then EVAP pressure decreases to reference pressure. Not yet determined A P2402 Small difference between EVAP pressures during steps 1/5 and 2/5 Leak detection pump stuck ON B *: The DTCs relating to the EVAP system displayed on the Techstream when checking. HINT: The first reference pressure is the value determined in step 2/5. B --> See step 22 A: Go to next step
  6. PERFORM EVAP SYSTEM CHECK (STEP 2/5) 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* (Step "A"). *: The leak detection pump begins to operate as step 1/5 finishes and step 2/5 starts. (b) Check the EVAP pressure again when it has stabilized. This pressure is the reference pressure (Step "B"). Result DTCs* Test Results Suspected Trouble Areas Proceed to - EVAP pressure in step (b) between -4.85 kPa and -1.057 kPa (-36.4 mmHg and -7.93 mmHg) Not yet determined A P043F and P2401 EVAP pressure in step (b) -1.057 kPa (-7.93 mmHg) or more Reference orifice high-flow Leak detection pump stuck OFF B P043E EVAP pressure in step (b) below -4.85 kPa (-36.4 mmHg) Reference orifice clogged C P2419 EVAP pressure in step (a) more than -1.057 kPa (-7.93 mmHg) Vent valve stuck closed D *: The DTCs relating to the EVAP system displayed on the Techstream when checking. D --> See step 20 C --> See step 29 B --> See step 11 A: Go to next step
  7. PERFORM EVAP SYSTEM CHECK (STEP 2/5 TO 3/5) Check the EVAP pressure increase in step 3/5. Result DTCs* Test Results Suspected Trouble Areas Proceed to - EVAP pressure increases by 0.3 kPa (2.25 mmHg) or more within 10 seconds of proceeding from step 2/5 to step 3/5 Not yet determined A P2420 No variation in EVAP pressure despite proceeding from step 2/5 to step 3/5 Vent valve stuck open (vent) B P0451 No variation in EVAP pressure during steps 1/5 through 3/5 Canister pressure sensor malfunction fixed C *: The DTCs relating to the EVAP system displayed on the Techstream when checking. C --> See step 29 B --> See step 19 A: Go to next step
  8. PERFORM EVAP SYSTEM CHECK (STEP 3/5) Wait until the EVAP pressure change is less than 0.1 kPa (0.75 mmHg) 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 4/5) Check the EVAP pressure in step 4/5. Result DTCs* Test Results Suspected Trouble Areas Proceed to - EVAP pressure increases by 0.3 kPa (2.25 mmHg) or more within 10 seconds of proceeding from step 3/5 to step 4/5 Not yet determined A P0441 EVAP pressure increases by 0.3 kPa (2.25 mmHg) or more within 10 seconds of proceeding from step 3/5 to step 4/5 Problems in EVAP hose between purge VSV and intake manifold B P0441 Variation in EVAP pressure less than 0.3 kPa (2.25 mmHg) for 10 seconds, after proceeding from step 3/5 to step 4/5 Purge VSV stuck closed C *: The DTCs relating to the EVAP system displayed on the Techstream when checking. C --> See step 12 B --> See step 15 A: Go to next step
  10. PERFORM EVAP SYSTEM CHECK (STEP 5/5) Check the EVAP pressure in step 5/5. Compare the EVAP pressure in step 3/5 and the second reference pressure (step 5/5). Result DTCs * Test Results Suspected Trouble Areas Proceed to - EVAP pressure (step 3/5) lower than second reference pressure (step 5/5) Not yet determined (no leakage from EVAP system) A P0441 and P0455 EVAP pressure (step 3/5) higher than [second reference pressure (step 5/5) x 0.2] Purge VSV stuck open EVAP gross leak B P0456 EVAP pressure (step 3/5) higher than second reference pressure (step 5/5) EVAP small leak B *: The DTCs relating to the EVAP system displayed on the Techstream when checking. B --> See step 12 A --> See step 35
  11. PERFORM EVAP SYSTEM CHECK (STEP 3/5) Check the EVAP pressure in step 3/5. Result DTCs* Test Results Suspected Trouble Areas Proceed to P043F EVAP pressure less than reference pressure measured at 2/5 Reference orifice high-flow A P2401 EVAP pressure almost same as reference pressure measured at 2/5 Leak detection pump stuck OFF B *: The DTCs relating to the EVAP system displayed on the Techstream when checking. HINT: The first reference pressure is the value determined in step 2/5. B --> See step 22 A --> See step 29
  12. PERFORM ACTIVE TEST USING TECHSTREAM (PURGE VSV) On the Techstream, select the following menu items: Powertrain / Engine / 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 (Purge VSV: OFF). Use your finger to confirm that the purge VSV has no suction. Using the Techstream, turn on the purge VSV (Purge VSV: ON). Use your finger to confirm that the purge VSV has suction. Result Test Results Suspected Trouble Areas Proceed to No suction when purge VSV turned OFF, and suction applied when turned ON Purge VSV normal A Suction applied when purge VSV turned OFF Purge VSV stuck open B No suction when purge VSV turned ON Purge VSV stuck closed Problems with EVAP hose between purge VSV and intake manifold C Reconnect the hose. C --> See step 15 B --> See step 14 A: Go to next step
  13. CHECK FUEL CAP ASSEMBLY Check that the fuel cap is correctly installed and confirm the fuel cap meets OEM specifications. Tighten the fuel cap until a click sounds are heard. HINT: If an EVAP tester is available, check the fuel cap using the Techstream. 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 more, the fuel cap is normal. Result Test Results Suspected Trouble Areas 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 Reinstall the fuel cap. C --> See step 27 B --> See step 26 A --> See step 28
  14. INSPECT DUTY VACUUM SWITCHING VALVE (PURGE VSV) Turn the engine switch off. Disconnect the B42 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 Results Suspected Trouble Areas Proceed to No suction ECM A Suction applied Purge VSV B Reconnect the purge VSV connector. Reconnect the hose. B --> See step 30 A --> See step 34
  15. CHECK EVAP HOSE (PURGE VSV - AIR SURGE TANK) Disconnect the hose (connected to the air surge tank) from the purge VSV. Start the engine. Use your finger to confirm that the hose has suction. Result Test Results Suspected Trouble Areas Proceed to Suction applied EVAP hose between purge VSV and intake manifold normal A No suction Intake manifold port EVAP hose between purge VSV and intake manifold B Reconnect the hose. B --> See step 25 A: Go to next step
  16. INSPECT DUTY VACUUM SWITCHING VALVE (PURGE VSV) Remove the purge VSV. Apply the 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 Results Suspected Trouble Areas Proceed to Air flows Purge VSV normal A No air flow Purge VSV B Install the purge VSV. B --> See step 30 A: Go to next step
  17. CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV) Disconnect the B42 purge VSV connector. Turn the engine switch on (IG). Measure the voltage between terminal 2 of the purge VSV connector and body ground. Result Test Results Suspected Trouble Areas Proceed to 9 to 14 V Normal A Other than result above Wire harness or connectors between purge VSV and ECM B Reconnect the purge VSV connector. B --> See step 31 A: Go to next step
  18. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) Disconnect the B12 ECM connector and the B42 purge VSV connector. Measure the resistance. Standard resistance Tester Connection Specified Condition PRG (B12-108) - B42-2 Below 1 ohms PRG (B12-108) - Body ground 10 kohms or higher B42-2 - Body ground 10 kohms or higher Reconnect the purge VSV connector. Reconnect the ECM connector. NG --> See step 31 OK --> See step 34
  19. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE) Turn the engine switch off. Disconnect the L2 canister pump module connector. Turn the engine switch on (IG). Measure the voltage between the VLVB terminal of the canister pump module connector and body ground. Result Test Results Suspected Trouble Areas Proceed to 9 to 14 V Wire harness between vent valve and ECM Vent valve ECM A Below 3 V Power source wire harness of vent valve B Reconnect the canister pump module connector. B --> See step 31 A: Go to next step
  20. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the engine switch off. Disconnect the L2 canister pump module connector. Apply battery voltage to the VLVB and VGND terminals of the canister pump module. Touch the canister pump module to confirm the vent valve operation. Result Test Results Suspected Trouble Areas Proceed to Operating 1. Wire harness between vent valve and ECM 2. ECM A Not operating Vent valve B Reconnect the canister connector. B --> See step 29 A: Go to next step
  21. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Disconnect the A10 ECM connector. Disconnect the L2 canister pump module connector. Measure the resistance between the VPMP terminal of the ECM connector and the VGND terminal of the canister pump module connector. Result Test Results Suspected Trouble Areas Proceed to Below 1 ohms ECM A 10 kohms or higher Wire harness between ECM and canister pump module B Reconnect the ECM connector. Reconnect the canister pump module connector. B --> See step 31 A --> See step 34
  22. PERFORM ACTIVE TEST USING TECHSTREAM (VACUUM PUMP (ALONE)) Turn the engine switch off. Disconnect the L2 canister pump module connector. Turn the engine switch on (IG). On the Techstream, select the following menu items: Powertrain / Engine / Active Test / Activate the Vacuum Pump. Measure the voltage between the MTRB terminal of the canister pump module connector and body ground when the leak detection pump is turned ON and OFF using the Techstream. Result Test Results Suspected Trouble Areas Proceed to Below 3 V when OFF 9 to 14 V when ON Wire harness between leak detection pump and body ground Leak detection pump A Below 3 V when OFF and ON Wire harness between leak detection pump and ECM ECM B B --> See step 24 A: Go to next step
  23. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND) Turn the engine switch off. Disconnect the L2 canister pump module connector. Measure the resistance between the MGND terminal of the canister pump module connector and body ground. Result Test Results Suspected Trouble Areas Proceed to Below 1 ohms Leak detection pump A 10 kohms or higher Wire harness between canister pump module and body ground B Reconnect the canister pump module connector. B --> See step 31 A --> See step 29
  24. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Turn the engine switch off. Disconnect the L2 canister pump module connector. Disconnect the A10 ECM connector. Measure the resistance between the MPMP terminal of the ECM connector and the MTRB terminal of the canister pump module connector. Result Test Results Suspected Trouble Areas Proceed to Below 1 ohms ECM A 10 kohms or higher Wire harness between ECM and canister pump module B Reconnect the canister pump module connector. Reconnect the ECM connector. B --> See step 31 A --> See step 34
  25. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT) Stop the engine. 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 Results Suspected Trouble Areas Proceed to Suction applied EVAP hose between intake manifold and purge VSV A No suction Intake manifold B Reconnect the EVAP hose. B --> See step 33 A --> See step 32
  26. CORRECTLY REINSTALL OR REPLACE FUEL CAP HINT: When reinstalling the fuel cap, tighten it until a few click sounds are heard. When replacing the fuel cap, use a fuel cap that meets OEM specifications, and install it until a click sounds are heard. NEXT --> See step 36
  27. REPLACE FUEL CAP HINT: When installing the fuel cap, tighten it until a few click sounds are heard. NEXT --> See step 36
  28. LOCATE EVAP LEAK PART Disconnect the vent hose. Connect the EVAP pressure tester tool 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 36
  29. REPLACE CHARCOAL CANISTER ASSEMBLY Replace the canister assembly. Refer to «REMOVAL»(ref-396640-S05144770852011050900000) . 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 pipe to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. NEXT --> See step 36
  30. REPLACE DUTY VACUUM SWITCHING VALVE (PURGE VSV) Disconnect the connector and the hoses from the purge VSV. Remove the purge VSV. Refer to «REMOVAL - Step 86»(ref-396638-S00213747662011050900000) . Install a new purge VSV. Refer to «INSTALLATION - Step 5»(ref-396638-S39113097262011050900000) . Reconnect the connector and hoses. NEXT --> See step 36
  31. REPAIR OR REPLACE HARNESS OR CONNECTOR NEXT --> See step 36
  32. REPLACE EVAP HOSE (INTAKE MANIFOLD - PURGE VSV) NEXT --> See step 36
  33. 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 36
  34. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-396635-S35871318042011050900000) . NEXT --> See step 36
  35. 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: Go to next step
  36. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION) NOTE: The Evaporative System Check (Automatic Mode) consists of 5 steps performed automatically by the Techstream. It takes a maximum of approximately 18 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 in this step. 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 an Evaporative System Check, keep the temperature below 35°C (95°F). Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-396630-S12048003312011050900000) . On the Techstream, select the following menu items: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by selecting the following menu items: Powertrain / Engine / Trouble Codes / Pending. HINT: If no pending DTCs are found, the repair has been successfully completed. NEXT --> COMPLETED

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