Engine Control System (2AR-FE) (Diagnostic Codes (P1604-P2A00) & Circuit Tests)): Diagnosis Toyota RAV4 IV

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 the DTC can be stored as a result of certain user actions, even if the DTC is output, if the customer makes no mention of problems, clear the DTC 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 "Immobiliser 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-493432-S08719650372012081000000) .
6. When confirming the 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.

Scheme 122

Scheme 123

Scheme 124

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 60 and 250 rpm (the engine cranks but there is no combustion). HINT: If the engine speed is between 60 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 turn off 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 #1 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 turn off. HINT: If the engine stalls after starter turn off, the air fuel ratio may be incorrect or the VVT may have a problem returning. The initial combustion and starter turn off occur late. HINT: If the initial combustion and starter turn off 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 Engine immobiliser system Crankshaft position sensor ECM 4 to 9 60 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 turn off*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 assembly (includes pinion gear wear or tooth damage) Starting system Engine assembly Engine assembly (excess friction) Drive plate and ring gear sub-assembly 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 Cannot maintain pressure due to pressure regulator malfunction Fuel injector assembly leak Fuel leak from fuel line Fuel pump control system Fuel pump 35 to 48 Ignition system malfunction Spark plug Crankshaft position sensor Ignition coil assembly Engine stalls after starter turnoff Air suction Intake system connections 49 to 54 Deposits in throttle body Throttle with motor body assembly VVT valve does not return properly Camshaft timing oil control valve assembly Mass air flow meter sub-assembly malfunction Mass air flow meter sub-assembly The initial combustion and starter turnoff occur late Engine coolant temperature sensor malfunction Engine coolant temperature sensor 55 to 68 Mass air flow meter sub-assembly malfunction Mass air flow meter sub-assembly Abnormal air fuel learning value Air fuel ratio sensor Deviation from fuel injection characteristics Fuel injector assembly 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 assembly 87 to 94 95 to 102 Rough idling Crankshaft position sensor Abnormal fuel pressure Fuel Fuel leak from fuel line Fuel pump Pressure regulator Fuel system troubleshooting B Abnormal concentration of HC in surge tank Purge VSV system Fuel injector assembly 103 to 105 Fuel system troubleshooting C Injection signal system malfunction Fuel injector assembly Crankshaft position sensor Camshaft position sensor ECM 70 to 74 Intake system troubleshooting Difference between ISC target value and opening angle when idling Engine assembly (compression loss) Valve timing Engine coolant temperature sensor ECM 84 to 86 106 to 108 Ignition system troubleshooting Camshaft and/or crankshaft position sensor signal malfunction Crankshaft position sensor system (including sensor installation) Camshaft position sensor system (including sensor installation) ECM 75 to 83 109 to 117 NOTE: Inspect the fuses for circuits related to this system before performing the following inspection procedure. After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.Refer to «PRECAUTION»(ref-493289-S42810490842012081000000) .

Scheme 125

Scheme 126

Scheme 127

Scheme 128

Scheme 129

1. CHECK ANY OTHER DTCS OUTPUT AND RECORD FREEZE FRAME DATA (IN ADDITION TO DTC P1604) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs and record the Freeze Frame Data. HINT: This freeze frame data shows the actual engine conditions when engine starting trouble occurred. When confirming the freeze frame data, be sure to check all 5 data sets of freeze frame data. The fourth set of freeze frame data is the data recorded when the DTC is stored. RESULT Result Proceed to DTC P1604 is output A DTC P1604 and other DTCs are output B B --> See step 118 A: Go to next step
2. CHECK ENGINE IMMOBILISER SYSTEM Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Immobiliser Fuel Cut. Read the value displayed on the Techstream. OK Immobiliser Fuel Cut is OFF HINT: If the engine is cranked immediately after reconnecting the battery cable (key verification for engine immobiliser system not completed), the engine cannot be started. Key verification needs to wait for several seconds after turning the ignition switch to ON. RESULT Result Proceed to OK A NG (w/ smart key system) B NG (w/o smart key system) C B --> See step 119 C --> See step 144 A: Go to next step
3. CHECK MALFUNCTION CONDITION Confirm the problem symptoms. RESULT Result Proceed to Freeze frame data exists, but the starting difficulty cannot be reproduced and it is unknown what kind of starting difficulty occurred A The problem symptoms can be reproduced, or the malfunction conditions are known B B --> See step 25 A: Go to next step
4. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. 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-493432-S08719650372012081000000) . RESULT Freeze Frame Data Item Suspected Area Proceed to Engine Speed Battery Voltage All 5 sets of freeze frame data are 0 rpm (no engine cranking at all) Minimum voltage is less than 5 V Battery fully depleted A Minimum voltage is 5 V or higher Starter assembly malfunction Crankshaft position sensor system Excess engine friction ECM B 60 to 250 rpm (engine cranks but no initial combustion) - Fuel pump control system Ignition system Engine coolant temperature sensor Fuel injection system C 250 rpm or higher (combustion occurs but initial combustion and starter turnoff occur late) - Engine assembly Engine coolant temperature sensor Fuel injection system Fuel pump control system D Freeze Frame Data Item Suspected Area Proceed to Low Rev for Eng Start ON exists Intake system connections Throttle with motor body assembly Camshaft timing oil control valve assembly Mass air flow meter sub-assembly E HINT: When DTC P1604 is stored, either "Engine Start Hesitation"*1 or "Low Rev for Eng Start"*2 in the Freeze Frame Data will be ON. If "Low Rev for Eng Start" is ON, proceed to E. *1: This value turns ON when the engine speed does not reach a certain value for a certain period of time when starting the engine. *2: This value turns ON when the engine stalls immediately after starting the engine. If "Low Rev for Eng Start" is ON, as there is a possibility that the low engine speed or engine stall was caused by the user, confirm the following freeze frame data items. Immobiliser Fuel Cut Engine Speed (Starter Off) Shift SW Status (R, D Range) B --> See step 5 C --> See step 10 D --> See step 15 E --> See step 49 A --> CHARGE OR REPLACE BATTERY
5. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. 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-493432-S08719650372012081000000) . RESULT Freeze Frame Data Item Result Suspected Area Proceed to Battery Voltage Minimum voltage is 6 V or higher and voltage does not fluctuate*1 Starter system A Minimum voltage is 6 V or higher and voltage fluctuates*2, *3 Crankshaft position sensor system ECM B Minimum voltage is 5 to 6 V*4 Excess engine friction Battery fully depleted C HINT: *1: The 5 sets of freeze frame data show approximately the same battery voltage. *2: The 5 sets of freeze frame data show different battery voltages. *3: If the voltage fluctuates, it can be determined that cranking is being performed. When the engine speed is 0 rpm, the crankshaft position sensor system and/or the ECM may be malfunctioning. *4: There may be excess engine friction. Make sure that the crankshaft rotates smoothly when turning it by hand. Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts. B --> See step 6 C --> CHECK AND REPAIR ENGINE ASSEMBLY OR BATTERY A --> See step 120
6. CHECK SENSOR INSTALLATION (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 --> SECURELY REINSTALL SENSOR OK: Go to next step
7. INSPECT 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) Check the harnesses and connectors, referring to DTC P0335 inspection procedure.Refer to «PROCEDURE - Step 3»(ref-493440-S03400518722012081000000) . HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. REPLACE CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor.Refer to «REMOVAL»(ref-493433-S20981309522012081000000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 122 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
10. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. 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-493432-S08719650372012081000000) . RESULT Freeze Frame Data Item Suspected Area Proceed to Coolant Temp, Intake Air Coolant Temp Fuel Pump/Speed Status Difference between Coolant Temp and Intake Air is 10°C (18°F) or higher*1 Coolant Temp is 125°C (257°F) or higher, or lower than outside temperature*3 by 15°C (27°F) or higher - 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 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. *3: Use an actual outside temperature estimated from the Initial Intake Air, Ambient Temp for A/C, and (if possible) the weather when the DTC was detected. B --> See step 11 C --> See step 123 A --> See step 124
11. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Disconnect the fuel pump connector. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / 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 S1-4 - 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. NG --> See step 123 OK: Go to next step
12. CHECK TERMINAL VOLTAGE (FUEL INJECTOR CIRCUIT) Check the harnesses and connectors, referring to fuel injector circuit inspection procedure. See step 1 . HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> See step 125 OK: Go to next step
13. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. B --> See step 14 A --> REPAIR OR REPLACE FUEL LINE
14. CHECK FUEL SYSTEM. Refer to «PROCEDURE - Step 24»(ref-493445-S09525789852012081000000) B --> See step 24 A --> REPAIR OR REPLACE FUEL SYSTEM
15. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. 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-493432-S08719650372012081000000) . RESULT Freeze Frame Data Item Suspected Area Proceed to Coolant Temp, Intake Air Coolant Temp Long FT #1 Engine Speed Difference between Coolant Temp and Intake Air is 10°C (18°F) or higher Coolant Temp is 125°C (257°F) or higher, or lower than outside temperature*2 by 15°C (27°F) or higher - - Engine coolant temperature sensor A Other than above -15% or less, or +15% or higher - Fuel pump control system Fuel injector assembly B -15 to +15% Minimum speed is 300 rpm or higher*1 Engine assembly C Minimum speed is below 300 rpm Fuel system Intake air system D Difference between Coolant Temp and Intake Air is less than 10°C (18°F) - -15% or less, or +15% or higher - Fuel pump control system Fuel injector assembly B -15 to +15% Minimum speed is 300 rpm or higher*1 Engine assembly C Minimum speed is below 300 rpm Fuel system Intake air system D HINT: *1: Compression loss may have occurred in the engine assembly. *2: Use an actual outside temperature estimated from the Initial Intake Air, Ambient Temp for A/C, and (if possible) the weather when the DTC was detected. B --> See step 16 C --> CHECK AND REPAIR ENGINE ASSEMBLY D --> See step 18 A --> See step 124
16. INSPECT FUEL INJECTOR ASSEMBLY Check that no carbon is stuck to the fuel injector assembly. OK No carbon present. NG --> See step 126 OK: Go to next step
17. CHECK FUEL SYSTEM. Refer to «PROCEDURE - Step 24»(ref-493445-S09525789852012081000000) B --> See step 24 A --> REPAIR OR REPLACE FUEL SYSTEM
18. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. 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-493432-S08719650372012081000000) . RESULT Freeze Frame Data Item 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 higher*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 higher (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-493448-S08207024722012081000000) . 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 Abnormal A Normal B B --> See step 24 A --> See step 127
20. INSPECT 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 assembly may have a sealing problem. B --> See step 22 A: Go to next step
21. INSPECT FUEL INJECTOR ASSEMBLY Inspect the fuel injector assemblies.Refer to «INSPECTION»(ref-493441-S34583902462012081000000) . RESULT Result Proceed to Normal A Abnormal B B --> See step 126 A: Go to next step
22. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY Check if carbon is in the air flow passage. RESULT Result Proceed to No carbon present A Carbon in passage B B --> See step 128 A: Go to next step
23. CHECK INTAKE SYSTEM Check the intake system for vacuum leaks.Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-493442-S03721092742012081000000) . 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 cannot be started A Engine can be started B B --> END A: Go to next step
25. CONFIRM PROBLEM SYMPTOM Confirm the problem symptoms. HINT: The problem symptoms below can be determined by reading the freeze frame data. RESULT Problem Symptom Suspected Area Proceed to The engine does not crank Battery fully depleted Starter assembly (includes pinion gear wear or teeth damage) Starter system Engine assembly (excess friction) Drive plate and ring gear sub-assembly wear or teeth damage A Abnormal cranking speed Battery fully depleted Starter assembly Engine assembly (excess friction, compression loss) B There is no initial combustion (combustion does not occur even once)*1 Pressure regulator fuel pressure maintenance Fuel injector assembly leak Fuel leak from fuel line Fuel pump control system Fuel pump Spark plug Crankshaft position sensor system Ignition coil assembly system C The engine stalls after starter turn off (engine stalls immediately after the first time the engine speed increases)*2 Intake system connections Throttle with motor body assembly Camshaft timing oil control valve assembly Mass air flow meter sub-assembly system D The initial combustion and starter turnoff occur late*3 Engine coolant temperature sensor Mass air flow meter sub-assembly Air fuel ratio sensor Heated oxygen sensor Fuel injector assembly 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). B --> See step 32 C --> See step 35 D --> See step 49 E --> See step 55 A: Go to next step
26. PERFORM SIMULATION TEST When cranking the engine, check for a noise indicating that the starter pinion gear is extending, and check that the starter pinion gear is not spinning freely. RESULT Problem Symptom Suspected Area Proceed to A noise indicating that the starter pinion gear is extending is heard and the starter pinion gear is not spinning freely.*1 Battery Excess engine friction Starter assembly A A noise indicating that the starter pinion gear is extending is heard but the starter pinion gear is spinning freely. Drive plate and ring gear sub-assembly Starter assembly B A noise indicating that the starter pinion gear is extending is not heard Battery Starter assembly Starter system C HINT: *1: The battery may be fully depleted or there may be excess engine friction. B --> See step 29 C --> See step 30 A: Go to next step
27. INSPECT BATTERY Inspect the battery.Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-493436-S10417226542012081000000) . NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
28. CHECK ENGINE ASSEMBLY Check that the crankshaft rotates smoothly when rotating it by hand. OK Crankshaft rotates smoothly. HINT: Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts. NG --> REPAIR OR REPLACE ENGINE ASSEMBLY OK --> See step 129
29. INSPECT STARTER ASSEMBLY (STARTER PINION GEAR) Remove the starter assembly.Refer to «REMOVAL»(ref-493437-S39980335052012081000000) . Check for starter pinion gear wear and damage. OK There is no wear or damage. NG --> See step 130 OK --> REPLACE DRIVE PLATE AND RING GEAR SUB-ASSEMBLY
30. INSPECT BATTERY Inspect the battery.Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-493436-S10417226542012081000000) . NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
31. INSPECT STARTER ASSEMBLY Inspect the starter assembly.Refer to «INSPECTION»(ref-493437-S26235330762012081000000) . NG --> See step 130 OK --> See step 120
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 higher)*1 Engine compression loss B HINT: *1: 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 Inspect the battery.Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-493436-S10417226542012081000000) . 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 --> CHECK AND REPAIR ENGINE ASSEMBLY OK --> See step 129
35. INSPECT FUEL INJECTOR ASSEMBLY Using a sound scope or screwdriver, check for an injector operating sound while cranking the engine. OK Fuel injector assembly operating sound is heard. NG --> See step 47 OK: Go to next step
36. CHECK FUEL PRESSURE Check the fuel pressure.Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-493448-S08207024722012081000000) . NG --> See step 45 OK: Go to next step
37. CHECK SPARK PLUG AND SPARK Check for sparks.Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-493424-S33815498212012081000000) . 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 assembly 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 69, perform fuel system troubleshooting C (steps 70 to 74). B --> See step 40 C --> See step 69 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-493448-S08207024722012081000000) . 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) RESULT Result Proceed to Abnormal A Normal B*1 HINT: If the engine cannot be started, read the values after cranking the engine. *1: from step 69, perform fuel system troubleshooting C (steps 70 to 74). B --> See step 69 A --> See step 127
40. INSPECT 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*1 HINT: If the concentration is 400 ppm or higher, a fuel injector may have a sealing problem. *1: From step 69, perform fuel system troubleshooting C (steps 70 to 74). B --> See step 69 A --> See step 126
41. INSPECT SPARK PLUG Inspect the spark plugs.Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-493424-S33815498212012081000000) . HINT: Even if the spark plug of only one cylinder is malfunctioning, replace the spark plugs of all cylinders. NG --> See step 131 OK: Go to next step
42. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Engine Speed. Start the engine. While running the engine, read the [Engine Speed] value. OK 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 132 OK: Go to next step
43. CHECK TERMINAL VOLTAGE (POWER SOURCE OF IGNITION COIL ASSEMBLY) Check the harnesses and connectors, referring to DTC P0351 inspection procedure.Refer to «PROCEDURE - Step 1»(ref-493440-S07767151232012081000000) . HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> See step 133 OK: Go to next step
44. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM) Check the harnesses and connectors, referring to DTC P0351 inspection procedure.Refer to «PROCEDURE - Step 2»(ref-493440-S07767151232012081000000) . 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 assembly, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 69 and perform troubleshooting for the ignition system (steps 75 to 83). NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 134
45. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for an operating sound from the fuel pump. OK Control the Fuel Pump / Speed Specified Condition ON Operating sound heard OFF Operating sound not heard HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. NG --> See step 123 OK: Go to next step
46. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. If there are no fuel leaks, after inspecting the fuel pump control system, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 69 and perform fuel system troubleshooting C (steps 70 to 74). B --> See step 123 A --> REPAIR OR REPLACE FUEL LINE
47. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Engine Speed. Start the engine. While running the engine, read the [Engine Speed] value. OK 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
48. CHECK TERMINAL VOLTAGE (FUEL INJECTOR CIRCUIT) Check the harnesses and connectors, referring to fuel injector circuit inspection procedure. See step 1 . HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> See step 125 OK --> See step 122
49. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY Inspect the mass air flow meter sub-assembly.Refer to «ON-VEHICLE INSPECTION»(ref-493433-S13312990432012081000000) . NG --> See step 54 OK: Go to next step
50. CHECK INTAKE SYSTEM Check for air leaks in the intake system (vacuum hose disconnection, cracks, damaged gaskets, etc.).Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-493442-S03721092742012081000000) . 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 #1 and Long FT #1 are largely different from the normal values (differ by higher than 15%) when idling (intake air volume is small) and almost the same as the normal values when racing the engine (for example, when maintaining a speed of 3000 rpm) (intake air volume is high), air leakage may be present. OK There are no air leaks. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
51. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY Disconnect the throttle with motor body assembly connector. HINT: When the connector is disconnected, the vehicle enters fail-safe mode and the throttle valve opening angle is 4 to 7°. Crank the engine and check that it starts. RESULT Result Proceed to Engine starts A Engine does not start B HINT: When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear the DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . B --> See step 53 A: Go to next step
52. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY Check if carbon is in the air flow passage. OK No carbon present. NG --> See step 135 OK: Go to next step
53. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY) Operate the VVT system through the Active Test, and check if the VVT system is operating normally. Perform the Active Test, referring to DTC P0011 inspection procedure (VVT system for intake camshaft).Refer to «PROCEDURE - Step 2»(ref-493440-S14760840172012081000000) . Perform the Active Test, referring to DTC P0014 inspection procedure (VVT system for exhaust camshaft).Refer to «PROCEDURE - Step 2»(ref-493440-S41537869172012081000000) . RESULT Result Proceed to NG A OK B 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. *1: From step 69, perform intake system troubleshooting (steps 84 to 86). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 87 to 94). B --> See step 69 A --> See step 136
54. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) Check the harnesses and connectors, referring to DTC P0102 inspection procedure.Refer to «PROCEDURE - Step 4»(ref-493440-S18698830182012081000000) . 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 sub-assembly, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 69 and perform intake system troubleshooting (steps 84 to 86). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 87 to 94). NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 137
55. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor.Refer to «INSPECTION»(ref-493433-S23580260272012081000000) . 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 69 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 117), in that order. NG --> See step 124 OK: Go to next step
56. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Check the harnesses and connectors, referring to DTC P0115 inspection procedure.Refer to «PROCEDURE - Step 3»(ref-493440-S20963846482012081000000) . 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 69 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 117), in that order. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
57. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY Inspect the mass air flow meter sub-assembly.Refer to «ON-VEHICLE INSPECTION»(ref-493433-S13312990432012081000000) . HINT: If the mass air flow meter sub-assembly 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 69 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 117), in that order. NG --> See step 137 OK: Go to next step
58. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) Check the harnesses and connectors, referring to DTC P0102 inspection procedure.Refer to «PROCEDURE - Step 4»(ref-493440-S18698830182012081000000) . 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 69 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 117), in that order. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
59. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Gas AF Control / Long FT #1 and Atmosphere Pressure. RESULT Data List Item Result Suspected Area Proceed to Long FT #1 +25% or higher, or less than -25% Air fuel ratio sensor (sensor 1) Heated oxygen sensor (sensor 2) Mass air flow meter sub-assembly Fuel injector assembly ECM A Atmosphere Pressure 80 kPa (abs) [600 mmHg (abs)] or less (when altitude is 0 m [0 ft.]) Both Data List items listed above Values are other than above - B B --> See step 63 A: Go to next step
60. PERFORM SIMULATION TEST Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / Learning Value Reset. Confirm the following conditions as instructed on the screen. - Ignition switch ON - Engine stopped - Battery voltage 9 V or higher After confirming, select "Next" and initialize the learn value. HINT: If a message indicating learned value initialization failure is displayed on the screen, confirm the execution conditions, and perform learned value initialization again. Check if the engine can be started. RESULT Result Proceed to Engine can be started A Engine cannot be started B B --> See step 63 A: Go to next step
61. INSPECT AIR FUEL RATIO SENSOR Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Gas AF Control / Fuel System Status #1. Confirm that Fuel System Status #1 is CL. Enter the following menus: Powertrain / Engine and ECT / Data List / Gas AF Control / AF Lambda B1S1. Confirm that AF Lambda B1S1 is within the range of 0.95 to 1.05 when idling. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume / Gas AF Control / AFS Voltage B1S1 and O2S B1S2. 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 +12% Air fuel ratio sensor output voltage is below 3.1 V -12% 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 69 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 117), in that order. NG --> See step 138 OK: Go to next step
62. PERFORM SIMULATION TEST Check if the idle speed is stable after starting the engine. OK Engine speed is stable. HINT: After replacing the fuel injector assembly or mass air flow meter sub-assembly, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 69 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 117), in that order. NG --> See step 126 OK --> See step 137
63. CHECK FUEL PRESSURE Check the fuel pressure.Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-493448-S08207024722012081000000) . NG --> See step 68 OK: Go to next step
64. INSPECT SPARK PLUG Inspect the spark plugs.Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-493424-S33815498212012081000000) . 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 69 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 117), 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 69 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 117), in that order. *3: Engine starting trouble may occur if the vehicle is driven extremely short distances repeatedly. B --> See step 139 C --> See step 140 A: Go to next step
65. 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 assembly 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 69, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 117), in that order. B --> See step 67 C --> See step 69 A: Go to next step
66. CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures.Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-493448-S08207024722012081000000) . 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) RESULT Result Proceed to Abnormal A Normal B*1 HINT: If the engine cannot be started, read the values after cranking the engine. *1: From step 69, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 117), in that order. B --> See step 69 A --> See step 127
67. INSPECT 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*1 HINT: If the concentration is 400 ppm or higher, a fuel injector assembly may have a sealing problem. *1: From step 69, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 117), in that order. B --> See step 69 A --> See step 126
68. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. If there are no fuel leaks, after inspecting the fuel pump control system, check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 69 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 117), in that order. B --> See step 123 A --> REPAIR OR REPLACE FUEL LINE
69. CHECK MALFUNCTION CONDITION If the malfunction could not be identified during the inspection in steps 38, 39, 40 and 46, perform fuel system troubleshooting C (steps 70 to 74). RESULT Performed Step Troubleshooting by System Procedure Proceed to Steps 38, 39, 40 and 46 Fuel system troubleshooting C 70 to 74 A If the malfunction could not be identified during the inspection in step 44, perform ignition system troubleshooting (steps 75 to 83). RESULT Performed Step Troubleshooting by System Procedure Proceed to Step 44 Ignition system troubleshooting 75 to 83 B If the malfunction could not be identified during the inspection in steps 53 and 54, perform intake air system troubleshooting (steps 84 to 86). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 87 to 94). RESULT Performed Step Troubleshooting by System Procedure Proceed to Step 53 and 54 Intake air system troubleshooting 84 to 86 C Fuel system troubleshooting A 87 to 94 If the malfunction could not be identified during the inspection in steps 55, 56, 57, 58, 61, 62, 64, 65, 66, 67 and 68, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake air system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 117), in that order. RESULT Performed Step Troubleshooting by System Procedure Proceed to Steps 55, 56, 57, 58, 61, 62, 64, 65, 66, 67 and 68 Fuel system troubleshooting A 95 to 102 D Fuel system troubleshooting B 103 to 105 Intake air system troubleshooting 106 to 108 Ignition system troubleshooting 109 to 117 B --> See step 75 C --> See step 84 D --> See step 95 A: Go to next step
70. INSPECT FUEL INJECTOR ASSEMBLY Inspect the fuel injector assemblies.Refer to «INSPECTION»(ref-493441-S34583902462012081000000) . NG --> See step 126 OK: Go to next step
71. CHECK TERMINAL VOLTAGE (FUEL INJECTOR CIRCUIT) Check the harnesses and connectors, referring to fuel injector circuit inspection procedure. See step 1 . HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> See step 125 OK: Go to next step
72. REPLACE CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor.Refer to «REMOVAL»(ref-493433-S20981309522012081000000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 73 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
73. REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) Replace the camshaft position sensor (for intake camshaft).Refer to «REMOVAL»(ref-493433-S27247095732012081000000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 74 OK --> END (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) IS DEFECTIVE)
74. REPLACE CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) Replace the camshaft position sensor (for exhaust camshaft).Refer to «REMOVAL»(ref-493433-S27247095732012081000000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 122 OK --> END (CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) IS DEFECTIVE)
75. CHECK SENSOR INSTALLATION (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 --> SECURELY REINSTALL SENSOR OK: Go to next step
76. CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT)) Check the tightening and installation condition of the camshaft position sensor (for intake camshaft) bolt. Check the connection of the camshaft position sensor (for intake camshaft) connector. OK Sensor is installed correctly. NG --> SECURELY REINSTALL SENSOR (FOR INTAKE CAMSHAFT) OK: Go to next step
77. CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT)) Check the tightening and installation condition of the camshaft position sensor (for exhaust camshaft) bolt. Check the connection of the camshaft position sensor (for exhaust camshaft) connector. OK Sensor is installed correctly. NG --> SECURELY REINSTALL SENSOR (FOR EXHAUST CAMSHAFT) OK: Go to next step
78. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Check the harnesses and connectors, referring to DTC P0335 inspection procedure.Refer to «PROCEDURE - Step 3»(ref-493440-S03400518722012081000000) . HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
79. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) - ECM) Check the harnesses and connectors, referring to DTC P0340 inspection procedure.Refer to «PROCEDURE - Step 3»(ref-493440-S36815932892012081000000) . HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
80. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) - ECM) Check the harnesses and connectors, referring to DTC P0365 inspection procedure.Refer to «PROCEDURE - Step 3»(ref-493445-S35751070682012081000000) . HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
81. REPLACE CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor.Refer to «REMOVAL»(ref-493433-S20981309522012081000000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 82 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
82. REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) Replace the camshaft position sensor (for intake camshaft).Refer to «REMOVAL»(ref-493433-S27247095732012081000000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 83 OK --> END (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) IS DEFECTIVE)
83. REPLACE CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) Replace the camshaft position sensor (for exhaust camshaft).Refer to «REMOVAL»(ref-493433-S27247095732012081000000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 122 OK --> END (CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) IS DEFECTIVE)
84. READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / ISC Learning Valve. 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 higher Valve timing Compression A Less than (engine displacement (liters) x 0.9) - B B --> See step 86 A: Go to next step
85. CHECK CYLINDER COMPRESSION PRESSURE Check the compression.Refer to «ON-VEHICLE INSPECTION - Step 4»(ref-493422-S33675776772012081000000) . NG --> CHECK AND REPAIR ENGINE ASSEMBLY OK --> See step 141
86. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor.Refer to «INSPECTION»(ref-493433-S23580260272012081000000) . NG --> See step 124 OK: Go to next step
87. CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures.Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-493448-S08207024722012081000000) . Attach a fuel pressure gauge and check the fuel pressure when cranking the engine and after stopping the engine. Standard Vehicle State Specified Condition Cranking engine 304 kPa (3.1 kgf/cm 2 , 44 psi) to 343 kPa (3.5 kgf/cm 2 , 50 psi) 5 minutes after stopping engine 147 kPa (1.5 kgf/cm 2 , 21 psi) or higher NG --> See step 93 OK: Go to next step
88. READ VALUE USING TECHSTREAM (LONG FT #1) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Gas AF Control / Long FT #1. RESULT Data List Item Result Suspected Area Proceed to Long FT #1 -15 to +15% Wire harness or connector Fuel A +15% or higher, or less than -15% Fuel injector assembly B B --> See step 126 A: Go to next step
89. PERFORM SIMULATION TEST Check if the idle 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 idle speed or history of unstable idle speed Crankshaft position sensor system A All current and past idle speeds are stable Fuel B HINT: Through the customer problem analysis, confirm the fuel being used and the location at which the fuel was added to check if the malfunction is caused by the fuel in the vehicle. B --> REPLACE FUEL A: Go to next step
90. CHECK SENSOR INSTALLATION (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 --> SECURELY REINSTALL SENSOR OK: Go to next step
91. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Check the harnesses and connectors, referring to DTC P0335 inspection procedure.Refer to «PROCEDURE - Step 3»(ref-493440-S03400518722012081000000) . HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
92. REPLACE CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor.Refer to «REMOVAL»(ref-493433-S20981309522012081000000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 122 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
93. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. B --> See step 94 A --> REPAIR OR REPLACE FUEL LINE
94. INSPECT FUEL PUMP Inspect the fuel pump.Refer to «INSPECTION»(ref-493441-S08691618532012081000000) . HINT: Make sure there is no foreign matter such as iron particles on the fuel pump and no signs that the fuel pump was stuck. Make sure the internal connector is securely connected. Make sure the fuel pump filter is not clogged. NG --> See step 142 OK --> See step 127
95. CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures.Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-493448-S08207024722012081000000) . 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. NG --> See step 101 OK: Go to next step
96. READ VALUE USING TECHSTREAM (LONG FT #1) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Gas AF Control / Long FT #1. RESULT Data List Item Result Suspected Area Proceed to Long FT #1 -15 to +15% Wire harness or connector Fuel A +15% or higher, or less than -15% Fuel injector assembly B B --> See step 126 A: Go to next step
97. PERFORM SIMULATION TEST Check if the idle 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 idle speed or history of unstable idle speed Crankshaft position sensor system A All current and past idle speeds are stable Fuel B HINT: Through the customer problem analysis, confirm the fuel being used and the location at which the fuel was added to check if the malfunction is caused by the fuel in the vehicle. B --> REPLACE FUEL A: Go to next step
98. CHECK SENSOR INSTALLATION (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 --> SECURELY REINSTALL SENSOR OK: Go to next step
99. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Check the harnesses and connectors, referring to DTC P0335 inspection procedure.Refer to «PROCEDURE - Step 3»(ref-493440-S03400518722012081000000) . HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
100. REPLACE CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor.Refer to «REMOVAL»(ref-493433-S20981309522012081000000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 122 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
101. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. B --> See step 102 A --> REPAIR OR REPLACE FUEL LINE
102. INSPECT FUEL PUMP Inspect the fuel pump.Refer to «INSPECTION»(ref-493441-S08691618532012081000000) . HINT: Make sure there is no foreign matter such as iron particles on the fuel pump and no signs that the fuel pump was stuck. Make sure the internal connector is securely connected. Make sure the fuel pump filter is not clogged. NG --> See step 142 OK: Go to next step
103. CHECK PURGE VSV Disconnect the fuel vapor feed hose (on the canister side) of the purge VSV. Start the engine. Idle the engine. Disconnect the connector of the purge VSV. Check if air flows through the purge VSV. OK Air does not flow HINT: When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear the DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . NG --> See step 143 OK: Go to next step
104. INSPECT 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 assembly may have a sealing problem. B --> See step 105 A --> See step 126
105. CHECK INTAKE VALVE Check if carbon is on the intake valves. RESULT Result Proceed to Carbon present A No carbon present B B --> See step 106 A --> CLEAN INTAKE VALVE
106. READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / ISC Learning Valve. 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 108 A: Go to next step
107. CHECK CYLINDER COMPRESSION PRESSURE Check the compression.Refer to «ON-VEHICLE INSPECTION - Step 4»(ref-493422-S33675776772012081000000) . NG --> CHECK AND REPAIR ENGINE ASSEMBLY OK --> See step 141
108. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor.Refer to «INSPECTION»(ref-493433-S23580260272012081000000) . NG --> See step 124 OK: Go to next step
109. CHECK SENSOR INSTALLATION (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 --> SECURELY REINSTALL SENSOR OK: Go to next step
110. CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT)) Check the tightening and installation condition of the camshaft position sensor (for intake camshaft) bolt. Check the connection of the camshaft position sensor (for intake camshaft) connector. OK Sensor is installed correctly. NG --> SECURELY REINSTALL SENSOR (FOR INTAKE CAMSHAFT) OK: Go to next step
111. CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT)) Check the tightening and installation condition of the camshaft position sensor (for exhaust camshaft) bolt. Check the connection of the camshaft position sensor (for exhaust camshaft) connector. OK Sensor is installed correctly. NG --> SECURELY REINSTALL SENSOR (FOR EXHAUST CAMSHAFT) OK: Go to next step
112. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Check the harnesses and connectors, referring to DTC P0335 inspection procedure.Refer to «PROCEDURE - Step 3»(ref-493440-S03400518722012081000000) . HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
113. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) - ECM) Check the harnesses and connectors, referring to DTC P0340 inspection procedure.Refer to «PROCEDURE - Step 3»(ref-493440-S36815932892012081000000) . HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
114. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) - ECM) Check the harnesses and connectors, referring to DTC P0365 inspection procedure.Refer to «PROCEDURE - Step 3»(ref-493445-S35751070682012081000000) . HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
115. REPLACE CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor.Refer to «REMOVAL»(ref-493433-S20981309522012081000000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 116 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
116. REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) Replace the camshaft position sensor (for intake camshaft).Refer to «REMOVAL»(ref-493433-S27247095732012081000000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 117 OK --> END (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) IS DEFECTIVE)
117. REPLACE CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) Replace the camshaft position sensor (for exhaust camshaft).Refer to «REMOVAL»(ref-493433-S27247095732012081000000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 122 OK --> END (CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) IS DEFECTIVE)
118. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493432-S02175369332012081000000)
119. REPAIR ENGINE IMMOBILISER SYSTEM (W/ SMART KEY SYSTEM). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-493456-S07194162922012081000000)
120. CHECK CRANKING HOLDING FUNCTION CIRCUIT. Refer to «Cranking Holding Function Circuit»(ref-493439-S24590380152012081000000)
121. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-493433-S20981309522012081000000)
122. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
123. CHECK FUEL PUMP CONTROL CIRCUIT. Refer to «Fuel Pump Control Circuit»(ref-493439-S03779139032012081000000)
124. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-493433-S42949200312012081000000)
125. CHECK FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-493439-S30634097582012081000000)
126. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-493441-S16444464412012081000000)
127. REPLACE FUEL PRESSURE REGULATOR. Refer to «REMOVAL»(ref-493441-S20689094672012081000000)
128. CLEAN OR REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY. Refer to «REMOVAL»(ref-493433-S25324289982012081000000)
129. INSPECT STARTER ASSEMBLY. Refer to «INSPECTION»(ref-493437-S26235330762012081000000)
130. REPLACE STARTER ASSEMBLY. Refer to «REMOVAL»(ref-493437-S39980335052012081000000)
131. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-493449-S07580061132012081000000)
132. CHECK CRANKSHAFT POSITION SENSOR CIRCUIT. Refer to «PROCEDURE - Step 3»(ref-493440-S03400518722012081000000)
133. CHECK IGNITION COIL POWER SOURCE CIRCUIT. Refer to «PROCEDURE - Step 1»(ref-493440-S07767151232012081000000)
134. REPLACE IGNITION COIL ASSEMBLY. Refer to «REMOVAL»(ref-493449-S07580061132012081000000)
135. REMOVE FOREIGN OBJECT AND CLEAN THROTTLE WITH MOTOR BODY ASSEMBLY. Refer to «REMOVAL»(ref-493433-S25324289982012081000000)
136. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE OR EXHAUST CAMSHAFT). Refer to «REMOVAL»(ref-493433-S42680891732012081000000)
137. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-493433-S16373475662012081000000)
138. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-493433-S13636630482012081000000)
139. REPLACE SPARK PLUG (ABNORMAL CYLINDER). Refer to «REMOVAL»(ref-493449-S07580061132012081000000)
140. REPLACE SPARK PLUG (ALL CYLINDER). Refer to «REMOVAL»(ref-493449-S07580061132012081000000)
141. CHECK VALVE TIMING. Refer to «PROCEDURE - Step 5»(ref-493440-S14760840172012081000000)
142. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-493441-S05028738562012081000000)
143. INSPECT PURGE VSV. Refer to «INSPECTION»(ref-493428-S17009012732012081000000)
144. REPAIR ENGINE IMMOBILISER SYSTEM (W/O SMART KEY SYSTEM). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-493457-S31228682532012081000000)

HINT

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

Scheme 130

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2004 OR P2006) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Display (DTC Output) Proceed to P2004 or P2006 A P2004 or P2006 and other DTCs B HINT: If any DTCs other than P2004 or P2006 are output, troubleshoot those DTCs first. B --> See step 5 A: Go to next step
2. INSPECT INTAKE MANIFOLD (DC MOTOR FOR TCV OPERATION) Inspect the intake manifold.Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-493442-S03721092742012081000000) . NG --> See step 6 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (ECM - DC MOTOR FOR TCV) Disconnect the ECM connector. Disconnect the intake air control valve actuator connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B30-3 (IA1-) - R4-4 (M-) Always Below 1 ohms B30-4 (IA1+) - R4-5 (M+) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B30-3 (IA1-) or R4-4 (M-) - Body ground Always 10 kohms or higher B30-4 (IA1+) or R4-5 (M+) - body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the intake air control valve actuator connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK WHETHER DTC OUTPUT RECURS (DTC P2004 OR P2006) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Display (DTC Output) Proceed to P2004 or P2006 A No DTC B B --> SYSTEM OK A --> See step 7
5. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493432-S02175369332012081000000)
6. REPLACE INTAKE MANIFOLD. Refer to «REMOVAL»(ref-493446-S33488644752012081000000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

HINT

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

Scheme 131

1. INSPECT INTAKE MANIFOLD (DC MOTOR FOR TCV OPERATION) Inspect the intake manifold.Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-493442-S03721092742012081000000) . NG --> See step 4 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (ECM - DC MOTOR FOR TCV) Disconnect the ECM connector. Disconnect the intake air control valve actuator connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open): Tester Connection Condition Specified Condition B30-3 (IA1-) - R4-4 (M-) Always Below 1 ohms B30-4 (IA1+) - R4-5 (M+) Always Below 1 ohms Standard Resistance (Check for short): Tester Connection Condition Specified Condition B30-3 (IA1-) or R4-4 (M-) - Body ground Always 10 kohms or higher B30-4 (IA1+) or R4-5 (M+) - body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the intake air control valve actuator connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P2009 OR P2010) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Display (DTC Output) Proceed to P2009 or P2010 A No DTC B B --> See step 5 A --> See step 6
4. REPLACE INTAKE MANIFOLD. Refer to «REMOVAL»(ref-493446-S33488644752012081000000)
5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)
6. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

HINT

1. If different DTCs that are related to a different system are output simultaneously while terminal EIA1 is used as a ground terminal, terminal EIA1 may be open.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 132

Scheme 133

1. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE TCV) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the IAC Duty Ratio / All Data / IAC Sensor Voltage. Check the output voltage of IAC Sensor Voltage while changing Control the IAC Duty Ratio from -100 to 100% (or from 100 to -100%) using the Techstream. OK The voltage output of IAC Sensor Voltage remains between 0.2 and 4.8 V while Control the IAC Duty Ratio is changed from -100 to 100% (or from 100 to -100%). HINT: Control the IAC Duty Ratio operation IAC Sensor Voltage (Normal) Suspected Failure Area IAC1 circuit shorted VCIA circuit open VCIA and IAC1 circuit short-circuited IAC1 circuit open EIA1 circuit open Sensor malfunction -100% 0.2 to 1.0 V Remain below 0.2 V Remain higher than 4.8 V Other than the voltage in the 2 columns on the left 100% 3.2 to 4.8 V Remain below 0.2 V Remain higher than 4.8 V NG --> See step 3 OK: Go to next step
2. CHECK WHETHER DTC OUTPUT RECURS (DTC P2014, P2016 AND/OR P2017 ARE OUTPUT AGAIN) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Display (DTC Output) Proceed to P2014, P2016 and/or P2017 are output again A No output B B --> SYSTEM OK A --> See step 8
3. CHECK HARNESS AND CONNECTOR (TCV POSITION SENSOR - ECM) Disconnect the ECM connector. Disconnect the intake air control valve actuator connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B30-72 (VCIA) - R4-3 (VDD) Always Below 1 ohms B30-70 (IAC1) - R4-1 (OUT) Always Below 1 ohms B30-71 (EIA1) - R4-2 (GND) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B30-72 (VCIA) or R4-3 (VDD) - Body ground Always 10 kohms or higher B30-70 (IAC1) or R4-1 (OUT) - Body ground Always 10 kohms or higher B30-71 (EIA1) or R4-2 (GND) - Body ground Always 10 kohms or higher Reconnect the intake air control valve actuator connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT ECM (VCIA VOLTAGE) Disconnect the intake air control valve actuator connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition R4-3 (VDD) - Body ground Ignition switch ON 4.5 to 5.0 V Reconnect the intake air control valve actuator connector. NG --> See step 7 OK: Go to next step
5. REPLACE INTAKE MANIFOLD Replace the intake manifold.Refer to «REMOVAL»(ref-493446-S33488644752012081000000) . NEXT: Go to next step
6. CHECK WHETHER DTC OUTPUT RECURS (DTC P2014, P2016 AND/OR P2017 ARE OUTPUT AGAIN) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Display (DTC Output) Proceed to P2014, P2016 and/or P2017 are output again A No output B B --> END A --> See step 9
7. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
8. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
9. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

HINT

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

Scheme 134

Scheme 135

1. INSPECT THROTTLE BODY (RESISTANCE OF THROTTLE ACTUATOR) Disconnect the throttle body connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (M+) - 1 (M-) 20°C (68°F) 0.3 to 100 ohms Reconnect the throttle body connector. NG --> See step 5 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (THROTTLE BODY - ECM) Disconnect the throttle body connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B3-2 (M+) - B30-21 (M+) Always Below 1 ohms B3-1 (M-) - B30-20 (M-) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B3-2 (M+) or B30-21 (M+) - Body ground Always 10 kohms or higher B3-1 (M-) or B30-20 (M-) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the throttle body connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT THROTTLE BODY (VISUALLY CHECK THROTTLE VALVE) Check for foreign objects between the throttle valve and the housing. OK No foreign objects between throttle valve and housing. NG --> REMOVE FOREIGN OBJECT AND CLEAN THROTTLE BODY OK: Go to next step
4. INSPECT THROTTLE BODY (THROTTLE VALVE) Check if the throttle valve opens and closes smoothly. OK Throttle valve opens and closes smoothly. NG --> See step 6 OK --> See step 7
5. REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-493433-S25324289982012081000000)
6. REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-493433-S25324289982012081000000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
2. 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 136

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2109) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to 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. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, check "ISC Learning Value" in the freeze frame data.Refer to «FREEZE FRAME DATA»(ref-493432-S08719650372012081000000) . 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 with motor body assembly. TEXT IN ILLUSTRATION *1 Bore *2 Valve *a Reference *b Throttle with Motor Body Assembly Cross-section Diagram *c When valve fully opened *d Deposits *e Do not directly apply cleaner 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 with motor body assembly or wash the throttle with motor body assembly. Cleaning solvent may leak into the motor from the shaft and cause problems such as rust or valve movement problems. If there is coating material on the edge of the valve, be careful not to remove it. Push the throttle valve open gently with your finger and check that the throttle valve moves smoothly. HINT: If the throttle valve does not open smoothly, replace the throttle with motor body assembly. NEXT: Go to next step
4. READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Connect the Techstream to the DLC3. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / ISC Learning Value. Read the 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-493432-S02175369332012081000000)
6. REPLACE THROTTLE BODY ASSEMBLY. Refer to «REMOVAL»(ref-493433-S25324289982012081000000)

HINT

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

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

HINT

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

Scheme 137

1. READ VALUE USING TECHSTREAM (+BM VOLTAGE) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / +BM Voltage. Read the value displayed on the Techstream. Standard voltage 11 to 14 V NG --> See step 3 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (ECM - BATTERY, BODY GROUND) Disconnect the ECM connectors. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A9-3 (+BM) - Body ground Always 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B30-19 (ME01) - Body ground Always Below 1 ohms B30-104 (E1) - Body ground Reconnect the ECM connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
3. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)
4. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

HINT

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

HINT

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

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1. READ VALUE USING TECHSTREAM (ACCELERATOR PEDAL POSITION SENSOR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / ETCS / Accel Sensor Out No. 1 and Accel Sensor Out No. 2. Read the value displayed on the Techstream. Standard Voltage Accelerator Pedal Operation Accel Sensor Out No. 1 Accel Sensor Out No. 2 Released 0.5 to 1.1 V 1.2 to 2.0 V Depressed 2.6 to 4.5 V 3.4 to 4.98 V NG --> See step 2 OK --> See step 8
2. CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL POSITION SENSOR - ECM) Disconnect the accelerator pedal 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 A4-6 (VPA) - A9-55 (VPA) Always Below 1 ohms A4-5 (EPA) - A9-59 (EPA) Always Below 1 ohms A4-4 (VCPA) - A9-57 (VCPA) Always Below 1 ohms A4-3 (VPA2) - A9-56 (VPA2) Always Below 1 ohms A4-2 (EPA2) - A9-60 (EPA2) Always Below 1 ohms A4-1 (VCP2) - A9-58 (VCP2) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition A4-6 (VPA) or A9-55 (VPA) - Body ground Always 10 kohms or higher A4-5 (EPA) or A9-59 (EPA) - Body ground Always 10 kohms or higher A4-4 (VCPA) or A9-57 (VCPA) - Body ground Always 10 kohms or higher A4-3 (VPA2) or A9-56 (VPA2) - Body ground Always 10 kohms or higher A4-2 (EPA2) or A9-60 (EPA2) - Body ground Always 10 kohms or higher A4-1 (VCP2) or A9-58 (VCP2) - Body ground Always 10 kohms or higher Reconnect the accelerator pedal position sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK ECM (VCPA AND VCP2 VOLTAGE) Disconnect the accelerator pedal position sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A4-4 (VCPA) - A4-5 (EPA) Ignition switch ON 4.5 to 5.5 V A4-1 (VCP2) - A4-2 (EPA2) Ignition switch ON 4.5 to 5.5 V Reconnect the accelerator pedal position sensor connector. NG --> See step 6 OK: Go to next step
4. REPLACE ACCELERATOR PEDAL ROD ASSEMBLY Replace the accelerator pedal rod assembly.Refer to «REMOVAL»(ref-493433-S01926904102012081000000) . NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS (ACCELERATOR PEDAL POSITION SENSOR DTCS) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Start the engine. Allow the engine to idle for 15 seconds or more. Fully depress and release the accelerator pedal several times quickly. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P2120, P2122, P2123, P2125, P2127, P2128, and/or P2138 A No output B B --> END A --> See step 7
6. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)

HINT

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

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.
3. Turn the Techstream on.
4. Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor.
6. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume.)
7. Monitor the output voltages of the A/F and HO2 sensors (AFS Voltage B1 S1 and O2S B1 S2) 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%.
2. Each sensor reacts in accordance with increases and decreases in the fuel injection volume.

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 A/F Sensor (Sensor 1) Output Voltage HO2 Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 A/F sensor A/F sensor heater A/F sensor circuit 3 HO2 sensor HO2 sensor heater HO2 sensor circuit 4 Injector Fuel pressure Gas leak from exhaust system (Air-fuel ratio extremely rich or lean)

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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: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1 S1 and O2S B1 S2; and then press the graph button on the Data List view.

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. A low A/F sensor voltage could be caused by a rich air-fuel mixture. Check for conditions that would cause the engine to run rich.
3. A high A/F sensor voltage could be caused by a lean air-fuel mixture. Check for conditions that would cause the engine to run lean.
4. Sensor 1 refers to the sensor closest to the engine assembly.
5. Sensor 2 refers to the sensor farthest away from the engine assembly.

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.
3. Turn the Techstream on.
4. Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor.
6. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume.)
7. Monitor the output voltages of the A/F and HO2 sensors (AFS Voltage B1 S1 and O2S B1 S2) 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%.
2. Each sensor reacts in accordance with increases and decreases in the fuel injection volume.

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 A/F Sensor (Sensor 1) Output Voltage HO2 Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 A/F sensor A/F sensor heater A/F sensor circuit 3 HO2 sensor HO2 sensor heater HO2 sensor circuit 4 Injector Fuel pressure Gas leak from exhaust system (Air-fuel ratio extremely rich or lean)

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: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1 S1 and O2S B1 S2; and then press the graph button on the Data List view.

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. Sensor 1 refers to the sensor closest to the engine assembly.
3. Sensor 2 refers to the sensor farthest away from the engine assembly.

Scheme 145

1. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) Disconnect the air fuel ratio 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 B7-1 (HA1A) - B30-18 (HA1A) Always Below 1 ohms B7-3 (A1A+) - B30-103 (A1A+) B7-4 (A1A-) - B30-126 (A1A-) Standard Resistance (Check for short) Tester Connection Condition Specified Condition B7-1 (HA1A) or B30-18 (HA1A) - Body ground Always 10 kohms or higher B7-3 (A1A+) or B30-103 (A1A+) - Body ground B7-4 (A1A-) or B30-126 (A1A-) - Body ground Reconnect the air fuel ratio sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor.Refer to «REMOVAL»(ref-493433-S13636630482012081000000) . NEXT: Go to next step
3. PERFORM CONFIRMATION DRIVING PATTERN Drive the vehicle according to the Confirmation Driving Pattern. NEXT: Go to next step
4. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Read pending DTCs. RESULT Result Proceed to No output A P2237, P2238, P2239, P2252 or P2253 B B --> See step 5 A --> END
5. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

DTC SUMMARY

HINT

The vent valve is built into the canister pump module.

Refer to EVAP System.Refer to INSPECTION PROCEDURE .

HINT

Unit expressions

1. [kPa-a (mmHg-a)] is the absolute pressure.
2. [kPa-g (mmHg-g)] is the gauge pressure (relative pressure).
3. On the Techstream, convert the unit of measurement according to the inspection procedure.

HINT

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

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.
3. Turn the Techstream on.
4. Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor.
6. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume.)
7. Monitor the output voltages of the A/F and HO2 sensors (AFS Voltage B1 S1 and O2S B1 S2) 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%.
2. Each sensor reacts in accordance with increases and decreases in the fuel injection volume.

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 A/F Sensor (Sensor 1) Output Voltage HO2 Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 A/F sensor A/F sensor heater A/F sensor circuit 3 HO2 sensor HO2 sensor heater HO2 sensor circuit 4 Injector Fuel pressure Gas leak from exhaust system (Air-fuel ratio extremely rich or lean)

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: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1 S1 and O2S B1 S2; and then press the graph button on the Data List view.

HINT

1. DTC P2A00 may be also stored when the air-fuel ratio is stuck at rich or lean.
2. A low A/F sensor voltage could be caused by a rich air-fuel mixture. Check for conditions that would cause the engine to run rich.
3. A high A/F sensor voltage could be caused by a lean air-fuel mixture. Check for conditions that would cause the engine to run lean.
4. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
5. Sensor 1 refers to the sensor closest to the engine assembly.
6. Sensor 2 refers to the sensor farthest away from the engine assembly.

Note. Inspect the fuses of circuits related to this system before performing the following inspection procedure. The 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. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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Scheme 168

1. CONFIRM DTC Turn the ignition switch off and wait for 10 seconds. Turn the ignition switch to ON. Turn the ignition switch off and wait for 10 seconds. Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Code. Confirm DTCs and freeze frame data. If any EVAP system DTCs are output, the malfunctioning area can be determined using the table below. NOTE: If the reference pressure difference between the first and second checks is more than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) are stored. NEXT: Go to next step
2. PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) 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 higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F). Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Enter the following menus: Powertrain / Engine and ECT / Utility / System Check / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. HINT: If no pending DTCs are output, perform the Monitor Confirmation procedures (refer to the "Diagnostic Help" menu). After this confirmation, check for pending DTCs. If no DTCs are output, the evaporative system is normal. NEXT: Go to next step
3. PERFORM EVAPORATIVE SYSTEM CHECK (MANUAL MODE) NOTE: In the Evaporative System Check (Manual Mode), perform the 6 Evaporative System Check steps manually using the Techstream. Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, 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 higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F). Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Enter the following menus: Powertrain / Engine and ECT / Utility / System Check / Evaporative System Check / Manual Mode. NEXT: Go to next step
4. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 1/6) Check the EVAP pressure in step 1/6. RESULT DTCs*1 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-g (2.25 mmHg-g) or higher Canister pressure sensor noise B (P0452 or P0453) *2 EVAP pressure is below 42.11 kPa (abs) [315.85 mmHg (abs)] or 123.761 kPa (abs) [928.28 mmHg (abs)] or more EVAP pressure deviates +/-10 kPa [+/-75 mmHg] from actual atmosphere pressure *3 Canister pressure sensor or its circuit has malfunction C *1: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. *2: If the canister pressure sensor circuit has an open or short, DTC P0452 or P0453 is stored 0.5 seconds after the ignition switch is turned to ON. HINT: *3: Canister pressure sensor standard output range is 70 to 110 kPa (abs) [525 to 825 mmHg (abs)]. This varies by weather. B --> See step 38 C --> See step 12 A: Go to next step
5. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 1/6 TO 2/6) Check the EVAP pressure in steps 1/6 and 2/6. RESULT DTCs* Test Results Suspected Trouble Areas Proceed to - Virtually no variation in EVAP pressure during step 1/6, then decreases to reference pressure Not yet determined A P2402 Small difference between EVAP pressures during steps 1/6 and 2/6 Leak detection pump stuck ON B *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedures above. HINT: The first reference pressure is the value determined in step 2/6. B --> See step 31 A: Go to next step
6. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 2/6) HINT: Make a note of the pressures checked in steps (a) and (b) below. (a) Check the EVAP pressure 4 seconds after the leak detection pump is activated*1. *1: The leak detection pump begins to operate as step 1/6 finishes and step 2/6 starts. (b) Check the EVAP pressure again when it has stabilized. This pressure is the reference pressure. RESULT DTCs*2 Test Results Suspected Trouble Areas Proceed to - EVAP pressure in step (b) between -4.85 kPa-g and -1.057 kPa-g (-36.4 mmHg-g and -7.93 mmHg-g) Not yet determined A P043F and P2401 EVAP pressure in step (b) -1.057 kPa-g (-7.93 mmHg-g) or higher Reference orifice high-flow Leak detection pump stuck OFF B P043E EVAP pressure in step (b) below -4.85 kPa-g (-36.4 mmHg-g) Reference orifice clogged C P2419 EVAP pressure in step (a) higher than -1 kPa-g (-7.5 mmHg-g) Vent valve stuck closed D *2: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedures above. B --> See step 11 C --> See step 38 D --> See step 13 A: Go to next step
7. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 2/6 TO 3/6) Check the EVAP pressure increase in step 3/6. RESULT DTCs* Test Results Suspected Trouble Areas Proceed to - EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or higher within 10 seconds of proceeding from step 2/6 to step 3/6 Not yet determined A P2420 No variation in EVAP pressure despite proceeding from step 2/6 to step 3/6 Vent valve stuck open (vent) Canister (charcoal filter inside canister) clogged B P0451 No variation in EVAP pressure during steps 1/6 through 3/6 Canister pressure sensor output value stuck Vent valve broken (valve split in two) Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) C *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedures above. B --> See step 27 C --> See step 15 A: Go to next step
8. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 3/6) Wait until the EVAP pressure change is below 0.12 kPa-g (0.9 mmHg-g) for 30 seconds. Measure the EVAP pressure and record it. HINT: A few minutes are required for the EVAP pressure to become saturated. When there is little fuel in the fuel tank, it takes up to 15 minutes. NEXT: Go to next step
9. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 4/6) Check the EVAP pressure in step 4/6. RESULT DTCs*1 Test Results Suspected Trouble Areas Proceed to - EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or higher within 10 seconds of proceeding from step 3/6 to step 4/6 Not yet determined A P0441*2 EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or higher within 10 seconds of proceeding from step 3/6 to step 4/6 Purge VSV Purge VSV circuit Problems in EVAP hose between purge VSV and intake manifold Problems in EVAP hose between canister and purge VSV ECM B P0441 Variation in EVAP pressure below 0.3 kPa-g (2.25 mmHg-g) for 10 seconds, after proceeding from step 3/6 to step 4/6 Purge VSV stuck closed Purge VSV circuit Canister (charcoal filter inside canister) clogged Problems in EVAP hose between purge VSV and intake manifold Problems in EVAP hose between canister and purge VSV ECM C *1: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. *2: This result suggests that due to purge line blockage or purge VSV malfunction, the DTC was stored by the purge flow monitor while the engine was running, or that key-off monitor test result were nearly borderline values. B --> See step 22 C --> See step 17 A: Go to next step
10. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 5/6) Check the EVAP pressure in step 5/6. Compare the EVAP pressure in step 3/6 and the second reference pressure (step 5/6). RESULT DTCs* Test Results Suspected Trouble Areas Proceed to - EVAP pressure (step 3/6) below second reference pressure (step 5/6) Not yet determined (no leakage from evaporative system) A P0441 and P0455 EVAP pressure (step 3/6) higher than [second reference pressure (step 5/6) x 0.2] Purge VSV stuck open EVAP gross leak B P0456 EVAP pressure (step 3/6) between second reference pressure and [second reference pressure x 0.2] (step 5/6) Evaporative small leak B *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedures above. A --> See step 43 B --> See step 17
11. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 3/6) Check the EVAP pressure in step 3/6. RESULT DTCs* Test Results Suspected Trouble Areas Proceed to P043F EVAP pressure less than [reference pressure] measured at 2/6 Reference orifice high-flow A P2401 EVAP pressure almost same as [reference pressure] measured at 2/6 Leak detection pump stuck OFF B *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedures above. HINT: The first reference pressure is the value determined in step 2/6. A --> See step 38 B --> See step 31
12. INSPECT CANISTER PUMP MODULE (CANISTER PRESSURE SENSOR CIRCUIT) Check the canister pressure sensor circuit, referring to DTC P0451 canister pressure sensor circuit inspection procedure.Refer to «INSPECTION PROCEDURE»(ref-493445-S42931733652012081000000) . NEXT --> See step 48
13. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the ignition switch off. Disconnect the 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 Wire harness or connector between vent valve and ECM Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) ECM A Not operating Vent valve B B --> See step 38 A: Go to next step
14. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Disconnect the ECM connector. Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A9-42 (VPMP) - S3-8 (VGND) Always Below 1 ohms A9-42 (VPMP) or S3-8 (VGND) - Body ground Always 10 kohms or higher RESULT Result Suspected Trouble Area Proceed to OK Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) ECM A NG Wire harness or connector between ECM and canister pump module B B --> See step 40 A: Go to next step
15. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND) Turn the ignition switch off. Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Specified Condition Suspected Trouble Areas Proceed to S3-6 (MGND) - Body ground Always Below 1 ohms Canister pump module Wire harness or connector between canister pump module and ECM ECM A 10 kohms or higher Wire harness or connector between canister pump module and body ground B B --> See step 40 A: Go to next step
16. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Turn the ignition switch off. Disconnect the canister pump module connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Specified Condition Suspected Trouble Areas Proceed to A9-34 (MPMP) - S3-1 (MTRB) Always Below 1 ohms Canister pump module ECM A 10 kohms or higher Wire harness between ECM and canister pump module B A --> See step 45 B --> See step 40
17. PERFORM ACTIVE TEST USING TECHSTREAM (PURGE VSV) Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control. Disconnect the hose (connected to the canister) from the purge VSV. Start the engine. Using the Techstream, turn off the purge VSV (EVAP VSV: OFF). Use your finger to confirm that the purge VSV has no suction. Using the Techstream, turn on the purge VSV (EVAP 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 Blockage in the purge line is considered (based on result of step 9): Problems with EVAP hose between canister and purge VSV Canister (charcoal filter inside canister) clogged ECM A Leakage is considered (based on result of step 10): Fuel cap Leakage from EVAP line, fuel tank, or canister B Suction applied when purge VSV turned OFF Purge VSV stuck open C No suction when purge VSV turned ON Purge VSV stuck closed Problems with EVAP hose between purge VSV and intake manifold D B --> See step 20 C --> See step 21 D --> See step 23 A: Go to next step
18. INSPECT EVAP HOSE (PURGE VSV - CANISTER) Check for blockages in the EVAP purge line between the purge VSV and canister. OK No blockages in the EVAP purge line between the purge VSV and canister. NG --> See step 44 OK: Go to next step
19. INSPECT CANISTER (CHARCOAL FILTER INSIDE CANISTER) Check for filter blockage in the canister.Refer to «INSPECTION»(ref-493428-S22042473892012081000000) . OK No blockages in the canister. OK --> See step 47 NG --> See step 38
20. CHECK FUEL CAP ASSEMBLY Check that the fuel cap is correctly installed and confirm the fuel cap meets OEM specifications. Tighten the fuel cap firmly. (Only one click sound is heard.) HINT: If an EVAP tester is available, check the fuel cap using the tester. Remove the fuel cap and install it onto a fuel cap adapter. Connect an EVAP tester pump hose to the adapter, and pressurize the cap to 3.2 to 3.7 kPa (24 to 28 mmHg) using an EVAP tester pump. Seal the adapter and wait for 2 minutes. Check the pressure. If the pressure is 2 kPa (15 mmHg) or 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 A --> See step 37 B --> See step 35 C --> See step 36
21. INSPECT DUTY VACUUM SWITCHING VALVE (PURGE VSV) Turn the ignition switch off. Disconnect the B2 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 Wire harness or connector between purge VSV and ECM (short to ground) ECM A Suction applied Purge VSV B A --> See step 26 B --> See step 39
22. INSPECT EVAP HOSE (PURGE VSV - CANISTER) Check for blockages in the EVAP purge line between the purge VSV and canister. OK No blockages in the EVAP purge line between the purge VSV and canister. NG --> See step 44 OK: Go to next step
23. CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD) Disconnect the hose (connected to the intake manifold) from the purge VSV. Start the engine. Use your finger to confirm that the hose has suction. RESULT Test Results Suspected Trouble Areas Proceed to Suction applied EVAP hose between purge VSV and intake manifold normal Purge VSV Purge VSV power source Wire harness or connector between purge VSV and ECM A No suction Intake manifold port EVAP hose between purge VSV and intake manifold B B --> See step 34 A: Go to next step
24. INSPECT DUTY VACUUM SWITCHING VALVE (PURGE VSV) Remove the purge VSV. Apply battery voltage to the terminals of the purge VSV. Using an air gun, confirm that air flows from port E to port F. RESULT Test Results Condition Suspected Trouble Areas Proceed to Air flows Battery voltage is applied to purge VSV terminals Purge VSV normal Purge VSV power source Wire harness or connector between purge VSV and ECM A Air does not flow Battery voltage is applied to purge VSV terminals Purge VSV B B --> See step 39 A: Go to next step
25. CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV) Disconnect purge VSV connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Switch Condition Specified Condition Suspected Trouble Areas Proceed to B2-1 - Body Ground Ignition Switch ON 11 to 14 V Purge VSV power source normal Wire harness or connector between purge VSV and ECM A Other than result above Wire harness or connectors between purge VSV and ECM B B --> See step 40 A: Go to next step
26. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) Disconnect the ECM connector and the purge VSV connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Conditions B30-28 (PRG) - B2-2 Always Below 1 ohms B30-28 (PRG) - Body ground Always 10 kohms or higher OK --> See step 47 NG --> See step 40
27. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE) Turn the ignition switch off. Disconnect the canister pump module connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Switch Condition Specified Condition Suspected Trouble Areas Proceed to S3-9 (VLVB) - Body ground Ignition switch ON 9 to 14 V Wire harness or connector between vent valve and ECM Vent valve Canister (charcoal filter inside canister) clogged ECM A Below 3 V Power source wire harness of vent valve B B --> See step 40 A: Go to next step
28. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the ignition switch off. Disconnect the 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 Wire harness or connector between vent valve and ECM Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) ECM A Not operating Vent valve B B --> See step 38 A: Go to next step
29. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Disconnect the ECM connector. Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Specified Condition Suspected Trouble Areas Proceed to A9-42 (VPMP) - S3-8 (VGND) Always Below 1 ohms Canister (charcoal filter inside canister) clogged ECM A 10 kohms or higher Wire harness or connector between ECM and canister pump module B B --> See step 40 A: Go to next step
30. INSPECT CANISTER (CHARCOAL FILTER INSIDE CANISTER) Check for filter blockage in the canister.Refer to «INSPECTION»(ref-493428-S22042473892012081000000) . OK No blockages in the canister. OK --> See step 47 NG --> See step 38
31. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VACUUM PUMP) Turn the ignition switch off. Disconnect the canister pump module connector. Turn the ignition switch to ON. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump. Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Condition Specified Condition Suspected Trouble Areas Proceed to S3-1 (MTRB) - Body ground Leak detection pump ON and OFF (Active Test ON and OFF) Below 3 V when OFF 11 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 11 to 14 V when OFF and ON ECM C B --> See step 33 C --> See step 47 A: Go to next step
32. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND) Turn the ignition switch off. Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Specified Condition Suspected Trouble Areas Proceed to S3-6 (MGND) - Body ground Always Below 1 ohms Leak detection pump A 10 kohms or higher Wire harness or connector between canister pump module and body ground B A --> See step 38 B --> See step 40
33. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Turn the ignition switch off. Disconnect the canister pump module connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A9-34 (MPMP) - S3-1 (MTRB) Always Below 1 ohms A9-34 (MPMP) or S3-1 (MTRB) - Body ground Always 10 kohms or higher RESULT Result Suspected Trouble Area Proceed to OK ECM A NG Wire harness or connector between ECM and canister pump module B A --> See step 47 B --> See step 40
34. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT) 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 A --> See step 41 B --> See step 42
35. CORRECTLY REINSTALL OR REPLACE FUEL CAP HINT: When reinstalling the fuel cap, tighten it until a click sound is heard. When replacing the fuel cap, use a fuel cap that meets OEM specifications, and tighten it until a click sound is heard to install it. NEXT --> See step 48
36. REPLACE FUEL CAP HINT: When replacing the fuel cap, use a fuel cap that meets OEM specifications, and tighten it until a click sound is heard to install it. NEXT --> See step 48
37. LOCATE EVAP LEAK PART Disconnect the vent hose. Connect the evaporative pressure tester tool to the canister pump module with the adapter. Pressurize the evaporative system to 3.2 to 3.7 kPa (24 to 28 mmHg). Apply soapy water to the piping and connecting parts of the evaporative 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 fuel tank from the canister. Block the canister side and conduct an inspection. In this way, the fuel tank can be excluded as an area suspected of causing fuel leaks. NEXT --> See step 48
38. REPLACE CHARCOAL CANISTER ASSEMBLY Replace the canister assembly.Refer to «REMOVAL»(ref-493428-S03111220872012081000000) . NOTE: When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter. NEXT --> See step 48
39. REPLACE DUTY VACUUM SWITCHING VALVE (PURGE VSV) Disconnect the connector and hoses from the purge VSV. Remove the purge VSV. Install a new purge VSV. Reconnect the connector and hoses. NEXT --> See step 48
40. REPAIR OR REPLACE HARNESS OR CONNECTOR NEXT --> See step 48
41. REPLACE EVAP PURGE LINE (INTAKE MANIFOLD - PURGE VSV) NEXT --> See step 48
42. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT) Check that the EVAP purge port of the intake manifold is not clogged. If necessary, replace the intake manifold. NEXT --> See step 48
43. REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS Repair the malfunctioning areas indicated by the DTCs that were confirmed when the vehicle was brought in. NEXT --> See step 48
44. REPAIR OR REPLACE EVAP PURGE LINE (PURGE VSV - CANISTER) NEXT --> See step 48
45. REPLACE CHARCOAL CANISTER ASSEMBLY Replace the canister assembly.Refer to «REMOVAL»(ref-493428-S03111220872012081000000) . NOTE: When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter. NEXT: Go to next step
46. PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) 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 higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the temperature below 35°C (95°F). Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Enter the following menus: Powertrain / Engine and ECT / Utility / System Check / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes. RESULT Result Proceed to EVAP system DTCs are output A No DTCs output (No pending DTCs output) B B --> COMPLETED A: Go to next step
47. REPLACE ECM Replace the ECM.Refer to «REMOVAL»(ref-493433-S09832564842012081000000) . NEXT: Go to next step
48. PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) 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 higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the temperature below 35°C (95°F). Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Enter the following menus: Powertrain / Engine and ECT / Utility / System Check / Evaporative System Check / Automatic Mode. After the System Check is completed, check for pending DTCs. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. HINT: If no pending DTCs are found, the repair has been successfully completed. NEXT --> COMPLETED

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

Scheme 169

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Scheme 176

Scheme 177

1. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - BATTERY) Remove the integration relay from the engine room No. 1 relay block. Disconnect the integration relay connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition Engine room relay block (1C-1) - Body ground Always 11 to 14 V Reinstall the integration relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY - BATTERY) OK: Go to next step
2. INSPECT INTEGRATION NO. 1 RELAY (EFI MAIN RELAY) Inspect the EFI MAIN relay.Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-493433-S19347312322012081000000) . NG --> REPLACE INTEGRATION NO. 1 RELAY OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - ECM, BODY GROUND) Check the harness and connectors between the integration relay and ECM. Remove the integration relay from the engine room No. 1 relay block. 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 A9-6 (MREL) - 1A-2 Always Below 1 ohms A9-2 (+B) - 1A-4 Always A9-1 (+B2) - 1A-4 Always Standard Resistance (Check for short) Tester Connection Condition Specified Condition A9-6 (MREL) or 1A-2 - Body ground Always 10 kohms or higher A9-2 (+B) or 1A-4 - Body ground Always A9-1 (+B2) or 1A-4 - Body ground Always Check the harness and connectors between the integration relay and body ground. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition 1A-3 - Body ground Always Below 1 ohms Reinstall the integration relay. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND) Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B30-104 (E1) - Body ground Always Below 1 ohms Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. INSPECT ECM (IGSW VOLTAGE) Disconnect the ECM connectors. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A9-28 (IGSW) - B30-104 (E1) Ignition switch ON 11 to 14 V Reconnect the ECM connectors. OK --> See step 12 NG: Go to next step
6. INSPECT RELAY (IG2 RELAY POWER SOURCE) Remove the IG2 relay from the engine room No. 1 relay block. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition IG2 relay (3) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 RELAY - BATTERY) OK: Go to next step
7. INSPECT IG2 RELAY Remove the IG2 relay from the engine room No. 1 relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 Battery voltage not applied to terminal 1 and 2 10 kohms or higher 3 - 5 Battery voltage applied to terminal 1 and 2 Below 1 ohms Reinstall the relay. NG --> REPLACE IG2 RELAY OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (ECM - ENGINE ROOM NO. 1 RELAY BLOCK) Remove the IG2 relay from the engine room No. 1 relay block. 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 IG2 relay (5) - A9-28 (IGSW) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition IG2 relay (5) or A9-28 (IGSW) - Body ground Always 10 kohms or higher Reinstall the IG2 relay. Reconnect the ECM connector. Result Result Proceed to Out of normal range A Within normal range (w/ Smart Key System) B Within normal range (w/o Smart Key System) C B --> See step 9 C --> See step 10 A --> REPAIR OR REPLACE HARNESS OR CONNECTOR
9. CHECK HARNESS AND CONNECTOR (ENGINE ROOM NO. 1 RELAY BLOCK - MAIN BODY ECU) Remove the IG2 relay from the engine room No. 1 relay block. Remove the instrument panel junction block (main body ECU). Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition IG2 relay (1) - E16-5 (IG2D) Always Below 1 ohms IG2 relay (2) - Body ground Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition IG2 relay (1) - E16-5 (IG2D) - Body ground Always 10 kohms or higher Reinstall the IG2 relay. Reconnect the main body ECU. OK --> See step 13 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR
10. CHECK HARNESS AND CONNECTOR (ENGINE ROOM NO. 1 RELAY BLOCK - IGNITION SWITCH) Remove the IG2 relay from the engine room No. 1 relay block. Disconnect the ignition switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition IG2 relay (1) - E3-6 (IG2) Always Below 1 ohms IG2 relay (2) - Body ground Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition IG2 relay (1) or E3-6 (IG2) - Body ground Always 10 kohms or higher Reinstall the IG2 relay. Reconnect the ignition switch connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
11. INSPECT IGNITION SWITCH ASSEMBLY Inspect the ignition switch assembly.Refer to «INSPECTION - Step 1»(ref-493437-S17078311002012081000000) . NG --> See step 14 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION SWITCH - BATTERY)
12. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
13. CHECK SMART KEY SYSTEM. Refer to «Power Source Mode does not Change»(ref-493438-S06476857312012081000000)
14. REPLACE IGNITION SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-493437-S22053917192012081000000)

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

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Scheme 182

1. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVE THE FUEL PUMP SPEED CONTROL) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. Check whether the fuel pump operating sound occurs when performing the Active Test on the Techstream. OK Fuel pump operating sound occurs. NG --> See step 4 OK: Go to next step
2. READ VALUE USING TECHSTREAM (STARTER SIGNAL) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal. Check the result when the ignition switch is turned to ON and START. OK Ignition Switch Position Starter Signal ON OFF START ON NG --> REPAIR OR REPLACE STARTING SYSTEM OK: Go to next step
3. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed. Read the values displayed on the Techstream while cranking the engine. OK Values are displayed continuously. NG --> REPAIR OR REPLACE CRANKSHAFT POSITION SENSOR CIRCUIT OK --> See step 12
4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK (C/OPN RELAY INPUT VOLTAGE) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition IB-11 - Body ground Ignition switch off Below 1 V IF-4 - Body ground IB-11 - Body ground Ignition switch ON 11 to 14 V IF-4 - Body ground NG --> See step 9 OK: Go to next step
5. INSPECT INSTRUMENT PANEL JUNCTION BLOCK (C/OPN RELAY) Remove the instrument panel junction block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition IB-11 - IA-8 Battery voltage not applied to terminals IF-4 and IE-5 10 kohms or higher Battery voltage applied to terminals IF-4 and IE-5 Below 1 ohms Reinstall the instrument panel junction block. NG --> REPLACE MAIN BODY ECU OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - ECM) Disconnect the ECM connector. Disconnect the instrument panel junction block connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition IE-5 - A9-8 (FC) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition IE-5 or A9-8 (FC) - Body ground Always 10 kohms or higher Reconnect the instrument panel junction block connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (C/OPN RELAY - FUEL PUMP - BODY GROUND) Check the harness and connectors between the instrument panel junction block and fuel pump. Disconnect the instrument panel junction block connector. Disconnect the fuel pump connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition IA-8 - Fuel pump (S1-4) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition IA-8 or Fuel pump (S1-4) - Body ground Always 10 kohms or higher Check the harness and connectors between the fuel pump and body ground. Disconnect the fuel pump connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition Fuel pump (S1-5) - Body ground Always Below 1 ohms Reconnect the instrument panel junction block connector. Reconnect the fuel pump connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. INSPECT FUEL PUMP Inspect the fuel pump.Refer to «INSPECTION»(ref-493441-S08691618532012081000000) . NG --> See step 11 OK --> See step 13
9. INSPECT INTEGRATION NO. 1 RELAY (A/F). Refer to «PROCEDURE - Step 5»(ref-493440-S01652578812012081000000) NG --> REPLACE INTEGRATION NO. 1 RELAY OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK - ENGINE ROOM NO. 1 RELAY BLOCK, INTEGRATION RELAY) Remove the IG2 relay from the engine room No. 1 relay block. Remove the integration relay from the engine room No. 1 relay block. Disconnect the instrument panel junction block connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition IG2 relay (5) - IF-4 Always Below 1 ohms IB-11 - 1B-8 Always Below 1 ohms 1B-6 - 1A-4 Always Below 1 ohms 1B-7 - Body ground Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition IG2 relay (5) or IF-4 - Body ground Always 10 kohms or higher IB-11 or 1B-8 - Body ground Always 10 kohms or higher 1B-6 or 1A-4 - Body ground Always 10 kohms or higher Reinstall the IG2 relay. Reinstall the integration relay. Reconnect the instrument panel junction block connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 14
11. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-493441-S05028738562012081000000)
12. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
13. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
14. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-493439-S03904180642012081000000)

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

Scheme 183

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Scheme 187

1. INSPECT FUEL INJECTOR (POWER SOURCE) Disconnect the fuel injector connectors. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B13-1 - Body ground Ignition switch ON 11 to 14 V B14-1 - Body ground Ignition switch ON 11 to 14 V B15-1 - Body ground Ignition switch ON 11 to 14 V B16-1 - Body ground Ignition switch ON 11 to 14 V Reconnect the fuel injector connectors. NG --> See step 6 OK: Go to next step
2. INSPECT FUEL INJECTOR (INJECTOR RESISTANCE) Disconnect the fuel injector connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 11.6 to 12.4 ohms Reconnect the fuel injector connectors. NG --> See step 9 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR - ECM) Disconnect the ECM connector. Disconnect the fuel injector connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B16-2 - B30-85 (#10) Always Below 1 ohms B15-2 - B30-84 (#20) Always Below 1 ohms B14-2 - B30-83 (#30) Always Below 1 ohms B13-2 - B30-82 (#40) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B16-2 or B30-85 (#10) - Body ground Always 10 kohms or higher B15-2 or B30-84 (#20) - Body ground Always 10 kohms or higher B14-2 or B30-83 (#30) - Body ground Always 10 kohms or higher B13-2 or B30-82 (#40) - Body ground Always 10 kohms or higher Reconnect the fuel injector connectors. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND) Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B30-109 (E01) - Body ground Always Below 1 ohms B30-81 (E02) - Body ground Always Below 1 ohms Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. INSPECT FUEL INJECTOR (INJECTION AND VOLUME) Check the fuel injector injection and volume.Refer to «INSPECTION»(ref-493441-S34583902462012081000000) . NG --> See step 9 OK --> See step 8
6. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR - IG2 RELAY) Disconnect the fuel injector connectors. Remove the IG2 relay from the No. 1 engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B16-1 - IG2 relay (5) Always Below 1 ohms B15-1 - IG2 relay (5) Always Below 1 ohms B14-1 - IG2 relay (5) Always Below 1 ohms B13-1 - IG2 relay (5) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B16-1 or IG2 relay (5) - Body ground Always 10 kohms or higher B15-1 or IG2 relay (5) - Body ground Always 10 kohms or higher B14-1 or IG2 relay (5) - Body ground Always 10 kohms or higher B13-1 or IG2 relay (5) - Body ground Always 10 kohms or higher Reconnect the fuel injector connectors. Reinstall the IG2 relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
7. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-493439-S03904180642012081000000)
8. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-493432-S01319624172012081000000)
9. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-493441-S16444464412012081000000)

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

Scheme 188

Scheme 189

Scheme 190

1. CHECK START SYSTEM Confirm the engine starting system. RESULT Result Proceed to Engine switch A Ignition switch B B --> See step 6 A: Go to next step
2. CHECK CRANKING Check the cranking of the engine. RESULT Result Proceed to Cranking possible but holding control does not operate A Does not crank B Cranking possible and holding control operates C B --> See step 7 C --> See step 8 A: Go to next step
3. INSPECT ECM (STSW TERMINAL VOLTAGE) Disconnect the ECM connector. Move the shift lever to P. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A9-52 (STSW) - Body ground Engine cranking 11 to 14 V Reconnect the ECM connector. NG --> See step 5 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (ECM - CLUTCH START SWITCH OR PARK/NEUTRAL POSITION SWITCH ASSEMBLY - MAIN BODY ECU) Remove the ST CUT relay from the No. 7 relay block. 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 ST CUT relay (3) - B30-17 (STAR) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition ST CUT relay (3) or B30-17 (STAR) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reinstall the ST CUT relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
5. CHECK HARNESS AND CONNECTOR (ECM - MAIN BODY ECU) Disconnect the main body ECU 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 E17-4 (STSW) - A9-52 (STSW) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition E17-4 (STSW) or A9-52 (STSW) - Body ground Always 10 kohms or higher Reconnect the main body ECU connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
6. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-493432-S01319624172012081000000)
7. CHECK SMART KEY SYSTEM. Refer to «Engine does not Start»(ref-493438-S03239313902012081000000)
8. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-493432-S01319624172012081000000)
9. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
10. CHECK SMART KEY SYSTEM. Refer to «Engine does not Start»(ref-493438-S03239313902012081000000)

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

Scheme 191

Scheme 192

1. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE VSV FOR ACIS) Disconnect the vacuum hose from port F on the vacuum switching valve (for ACIS). Connect the Techstream to the DLC3. Start the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Active the VSV for Intake Control. Operate the VSV for ACIS. Check the VSV air flow when switching the VSV on and off. OK Test Condition Specified Condition VSV is ON Air from port E flows out through port F VSV is OFF Air from port E flows out through air filter NG --> See step 5 OK: Go to next step
2. CHECK VACUUM HOSES (VACUUM SWITCHING VALVE - INTAKE AIR CONTROL VALVE, INTAKE MANIFOLD) Check the vacuum hoses.Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-493442-S03721092742012081000000) . NG --> REPAIR OR REPLACE VACUUM HOSES OK: Go to next step
3. INSPECT INTAKE MANIFOLD (INTAKE AIR CONTROL VALVE) Inspect the intake air control valve.Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-493442-S03721092742012081000000) . NG --> See step 8 OK --> See step 4
4. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-493432-S01319624172012081000000)
5. INSPECT VACUUM SWITCHING VALVE Inspect the vacuum switching valve.Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-493446-S41680677472012081000000) . NG --> See step 9 OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE - ECM AND INTEGRATION RELAY) Disconnect the intake air control valve connector. Disconnect the ECM connector. Remove the integration relay from the engine room relay block. Disconnect the integration relay connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B65-1 - B30-27 (ACIS) Always Below 1 ohms B65-2 - 1A-4 Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B65-1 or B30-27 (ACIS) - Body ground Always 10 kohms or higher B65-2 or 1A-4 - Body ground Always 10 kohms or higher Reconnect the intake air control valve connector. Reconnect the ECM connector. Reconnect the integration relay connector. Install the integration relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
7. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
8. REPLACE INTAKE MANIFOLD. Refer to «REMOVAL»(ref-493446-S33488644752012081000000)
9. REPLACE VACUUM SWITCHING VALVE. Refer to «REMOVAL»(ref-493446-S33488644752012081000000)

Inspection Method

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

HINT

1. Under normal conditions, the Accelerator Position value changes in response to the Accel Sens. No. 1 Volt % value. For more information on the numerical values, refer to the Data List.Refer to «DATA LIST / ACTIVE TEST»(ref-493432-S36889459602012081000000) .
2. If the Data List values of Accelerator Position and Accel Sens. No. 1 Volt % do not match, and the value of Accelerator Position changes but the value of Accel Sens. No. 1 Volt % is constant, this confirms that brake override system has activated. (Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test.)

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

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

Scheme 193

Scheme 194

1. CHECK THAT MIL IS ILLUMINATED Check the MIL illumination condition. MIL Condition Proceed to MIL remains on A MIL does not illuminate B B --> See step 5 A: Go to next step
2. CHECK WHETHER MIL TURNS OFF Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Check if any DTCs are output. Note down any DTCs. HINT: Check for DTCs output from other ECUs which relate to the MIL. Clear the DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Check if the MIL turns off. OK MIL turns off. NG --> See step 3 OK --> See step 8
3. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the ECM connector. Turn the ignition switch to ON. Check that the MIL is not illuminated. OK MIL is not illuminated. Reconnect the ECM connector. NG --> See step 4 OK --> See step 9
4. CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM) Disconnect the ECM connector. Disconnect the combination meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for short) Tester Connection Condition Specified Condition A9-36 (W) or E19-8 (EFI) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the combination meter connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
5. CHECK THAT MIL IS ILLUMINATED Check if the MIL is illuminated when the ignition switch is turned to ON. OK MIL is illuminated. NG --> See step 6 OK --> SYSTEM OK
6. CHECK THAT ENGINE STARTS Turn the ignition switch to ON. Start the engine. RESULT Result Proceed to Engine starts A Engine does not start* B HINT: *: The Techstream cannot communicate with the ECM. B --> See step 11 A: Go to next step
7. CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM) Disconnect the ECM connector. Disconnect the combination meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition A9-36 (W) - E19-8 (EFI) Always Below 1 ohms Reconnect the ECM connector. Reconnect the combination meter connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
8. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493432-S02175369332012081000000)
9. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
10. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-493452-S15960994972012081000000)
11. GO TO VC OUTPUT CIRCUIT. Refer to «VC Output Circuit»(ref-493439-S29185141572012081000000)
12. REPLACE COMBINATION METER. Refer to «REMOVAL»(ref-493452-S15960994972012081000000)