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Engine Control System (Diagnostics Codes (P1604 - U0101) & Circuit Tests) (2GR-FE): Diagnosis Toyota Camry XV50

Testing & Diagnostics 44 illustrations ~25568 words

INSPECTION PROCEDURE

HINT

  1. In contrast to normal malfunction diagnosis for components, circuits and systems, DTC P1604 is used to determine the malfunctioning area from the problem symptoms and freeze frame data when the user mentions problems such as starting difficulty. As 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-507773-S36728116192012100900000) .
  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.

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  1. Malfunction Recurrence and Inspection Areas Freeze frame data exists, but the malfunction (starting difficulty) has not reoccurred and the malfunction conditions are unknown. The engine speed recorded in the freeze frame data is 0 rpm (the engine does not crank). HINT: One of the following problems may be present: battery depletion, excess engine friction, a starter malfunction or a crankshaft position sensor malfunction. If the battery voltage is less than 6 V during cranking, there is a high probability that engine friction is abnormal. If the battery voltage drops to 5 V or less when starting the engine, the battery may be malfunctioning. If the battery voltage fluctuates while cranking the engine, it can be concluded that cranking is being performed. When the engine speed is 0 rpm, the crankshaft position sensor and/or an ECM may be malfunctioning. All engine speeds recorded in the freeze frame data are between 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 turn off timing is too late), the fuel injection volume is often incorrect (too low or too high) and determining the cause of the malfunction is often difficult. Due to an engine coolant temperature sensor malfunction, the fuel injection volume is extremely high or low and engine starting trouble may occur. If Long FT is incorrect, there may be a fuel supply problem due to the injectors or fuel pump being clogged, etc. If the engine cranking speed is too high, compression loss may have occurred due to carbon interfering with the valve operation. When the malfunction (starting difficulty) can be reproduced, or malfunction conditions are known, perform the following inspections ("Problem symptoms" and "Systems to inspect") Problem symptoms The engine does not crank. HINT: The starter is normal if a noise that indicates the starter pinion gear is extending is heard. The battery may be fully depleted or there may be excess engine friction. The engine cranking speed is abnormal. HINT: If the engine cranking speed is too high (for example, 300 rpm or higher with no combustion), compression loss may have occurred because carbon interfered with valve operation, etc. There is no initial combustion. HINT: If there is no initial combustion, there is probably a wiring problem or an ignition or fuel system part malfunction. The engine stalls after starter 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 turn off Air suction Intake system connections 49 to 54 Deposits in throttle with motor body assembly 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 turn off 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 ratio 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 VVT 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 Crankshaft position sensor and/or VVT sensor signal malfunction Crankshaft position sensor system (including sensor installation) VVT 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 engine 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-507751-S05084837522012100900000) .

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  1. CHECK ANY OTHER DTCS OUTPUT AND RECORD FREEZE FRAME DATA (IN ADDITION TO DTC P1604) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs and record the Freeze Frame Data. HINT: This freeze frame data shows the actual engine conditions when engine starting trouble occurred. When confirming the freeze frame data, be sure to check all 5 data sets of freeze frame data. The fourth set of freeze frame data is the data recorded when then 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / 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 engine switch on (IG). NG --> See step 119 OK: Go to next step
  3. CHECK MALFUNCTION CONDITION Confirm the problem symptoms. RESULT Result Proceed to Freeze frame data exists, but the starting difficulty cannot be reproduced and it is unknown what kind of starting difficulty occurred A The problem symptoms can be reproduced, or the malfunction conditions are known B B --> See step 25 A: Go to next step
  4. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the engine switch on (IG). Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-507773-S36728116192012100900000) . 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 turn off 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 engine switch on (IG). Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-507773-S36728116192012100900000) . 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. Perform "Inspection After Repair" after replacing the engine assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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-507943-S07139766872012100900000) . 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-507946-S27953984262012100900000) . 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 engine switch on (IG). Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-507773-S36728116192012100900000) . RESULT Freeze Frame Data Item Suspected Area Proceed to Coolant Temp, Intake Air Coolant Temp Fuel Pump Duty 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 higher than 0% - B At least 1 of the 5 sets of freeze frame data is 0% 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 0% Fuel pump control system C All 5 sets of freeze frame data are higher than 0% - 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. Perform "Inspection After Repair" after replacing the engine coolant temperature sensor. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition N11-4 (B) - Body ground Active Test is being performed 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Fuel Pump) 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 (POWER SOURCE OF FUEL INJECTOR ASSEMBLY) Check the harnesses and connectors, referring to DTC P0300 inspection procedure. Refer to «PROCEDURE - Step 10»(ref-507943-S07985423382012100900000) . 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. B --> See step 14 A --> REPAIR OR REPLACE FUEL LINE
  14. CHECK FUEL SYSTEM. Refer to «PROCEDURE - Step 24»(ref-507944-S33533818932012100900000) . B --> See step 24 A --> REPAIR OR REPLACE FUEL SYSTEM
  15. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the engine switch on (IG). Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-507773-S36728116192012100900000) . RESULT Freeze Frame Data Item Suspected Area Proceed to Coolant Temp, Intake Air Coolant Temp Long FT #1, Long FT #2 Engine Speed Difference between Coolant Temp and Intake Air is 10°C (18°F) or higher Coolant Temp is 125°C (257°F) or more, 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 less than 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 less than 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. Perform "Inspection After Repair" after replacing the engine assembly or engine coolant temperature sensor. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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. HINT: Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 126 OK: Go to next step
  17. CHECK FUEL SYSTEM. Refer to «PROCEDURE - Step 24»(ref-507944-S33533818932012100900000) . B --> See step 24 A --> REPAIR OR REPLACE FUEL SYSTEM
  18. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the engine switch on (IG). Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-507773-S36728116192012100900000) . 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 assembly. *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-507942-S10168898762012100900000) . 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-507947-S06278865442012100900000) . HINT: Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 126 OK: 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 HINT: Perform "Inspection After Repair" after cleaning or replacing the throttle with motor body assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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»(ref-507948-S40072061302012100900000) . OK No leaks in intake system. HINT: Perform "Inspection After Repair" after repairing or replacing the intake system. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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 turn off 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 turn off, 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 turn off 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-507919-S34057981972012100900000) . 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. Perform "Inspection After Repair" after replacing the engine assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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-507945-S16317711642012100900000) . Check for starter pinion gear wear and damage. OK There is no wear or damage. NG --> See step 130 OK --> See step 131
  30. INSPECT BATTERY Inspect the battery. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-507919-S34057981972012100900000) . NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
  31. INSPECT STARTER ASSEMBLY Inspect the starter assembly. Refer to «INSPECTION»(ref-507945-S30563584952012100900000) . 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. Perform "Inspection After Repair" after replacing the engine assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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-507919-S34057981972012100900000) . 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. Perform "Inspection After Repair" after replacing the engine assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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-507942-S10168898762012100900000) . NG --> See step 45 OK: Go to next step
  37. CHECK SPARK PLUG AND SPARK Check for sparks. Refer to «ON-VEHICLE INSPECTION»(ref-507917-S02629900092012100900000) . 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-507942-S10168898762012100900000) . 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). Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . B --> See step 69 A --> See step 126
  41. INSPECT SPARK PLUG Inspect the spark plugs. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-507917-S25339895002012100900000) . HINT: Even if the spark plug of only one cylinder is malfunctioning, replace the spark plugs of all cylinders. Perform "Inspection After Repair" after replacing the spark plug. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 132 OK: Go to next step
  42. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / 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 133 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 2»(ref-507944-S13033383102012100900000) . 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 134 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 3»(ref-507944-S13033383102012100900000) . 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). Perform "Inspection After Repair" after replacing the ignition coil assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 135
  45. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for an operating sound from the fuel pump. 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. If there are no fuel leaks, after inspecting the fuel pump control system, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / 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 (POWER SOURCE OF FUEL INJECTOR ASSEMBLY) Check the harnesses and connectors, referring to DTC P0300 inspection procedure. Refer to «PROCEDURE - Step 10»(ref-507943-S07985423382012100900000) . 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 «INSPECTION»(ref-507946-S00800964772012100900000) . 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»(ref-507948-S40072061302012100900000) . HINT: If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake air surge tank assembly increases and the air suction noise becomes louder. If Short FT #1, Short FT #2, Long FT #1 and Long FT #2 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 is no air leaks. HINT: Perform "Inspection After Repair" after repairing or replacing the intake system. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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 DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . 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. HINT: Perform "Inspection After Repair" after cleaning the throttle with motor body assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> REMOVE FOREIGN OBJECT AND CLEAN THROTTLE WITH MOTOR BODY ASSEMBLY 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-507943-S30974061752012100900000) . Perform the Active Test, referring to DTC P0014 inspection procedure (VVT system for exhaust camshaft). Refer to «PROCEDURE - Step 2»(ref-507943-S03195946422012100900000) . RESULT Result Proceed to NG A OK B*1 HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems. If the camshaft timing oil control valve assembly is stuck at the advanced side, the valve overlap increases and combustion worsens due to the internal EGR which may cause rough idle or cause the engine to stall. *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 3»(ref-507943-S37579666462012100900000) . HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. If the wire harness is normal, after replacing the mass air flow meter, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 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). Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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-507946-S13806071922012100900000) . 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. Perform "Inspection After Repair" after replacing the engine coolant temperature sensor. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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-507943-S26095895062012100900000) . 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 «INSPECTION»(ref-507946-S00800964772012100900000) . HINT: If the mass air flow meter is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 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. Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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 3»(ref-507943-S37579666462012100900000) . 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Gas AF Control / Long FT #1, Long FT #2 and Atmosphere Pressure. RESULT Data List Item Result Suspected Area Proceed to Long FT #1, Long FT #2 +25% or higher, or less than -25% Air fuel ratio sensor Heated oxygen sensor 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Utility / Learning Value Reset. Confirm the following conditions as instructed on the screen. - Engine switch on (IG) - 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 / Data List / Gas AF Control / Fuel System Status #1 and Fuel System Status #2. Confirm that Fuel System Status #1 and Fuel System Status #2 are CL. Enter the following menus: Powertrain / Engine / Data List / Gas AF Control / AF Lambda B1S1 and AF Lambda B2S1. Confirm that AF Lambda B1S1 and AF Lambda B2S1 are within the range of 0.95 to 1.05 when idling. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume / Gas AF Control / AFS Voltage B1S1 or AFS Voltage B2S1. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume. Standard Techstream Display Injection Volume Specified Condition AFS Voltage B1S1 AFS Voltage B2S1 +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. Perform "Inspection After Repair" after replacing the air fuel ratio sensor. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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. Perform "Inspection After Repair" after replacing the fuel injector assembly or mass air flow meter sub-assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 126 OK --> See step 137
  63. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-507942-S10168898762012100900000) . NG --> See step 68 OK: Go to next step
  64. INSPECT SPARK PLUG Inspect the spark plugs. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-507917-S25339895002012100900000) . 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. Perform "Inspection After Repair" after replacing the spark plug. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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-507942-S10168898762012100900000) . 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 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. Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. If there are no fuel leaks, after inspecting the fuel pump control system, check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 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-507947-S06278865442012100900000) . HINT: Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 126 OK: Go to next step
  71. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY) Check the harnesses and connectors, referring to DTC P0300 inspection procedure. Refer to «PROCEDURE - Step 10»(ref-507943-S07985423382012100900000) . 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-507946-S27953984262012100900000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 73 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
  73. REPLACE VVT SENSOR (FOR INTAKE CAMSHAFT) Replace the VVT sensor (for intake camshaft). Refer to «REMOVAL»(ref-507946-S09647111352012100900000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 74 OK --> END (VVT SENSOR (FOR INTAKE CAMSHAFT) IS DEFECTIVE)
  74. REPLACE VVT SENSOR (FOR EXHAUST CAMSHAFT) Replace the VVT sensor (for exhaust camshaft). Refer to «REMOVAL»(ref-507946-S09647111352012100900000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 122 OK --> END (VVT 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 (VVT SENSOR (FOR INTAKE CAMSHAFT)) Check the tightening and installation condition of the VVT sensor (for intake camshaft) bolt. Check the connection of the VVT 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 (VVT SENSOR (FOR EXHAUST CAMSHAFT)) Check the tightening and installation condition of the VVT sensor (for exhaust camshaft) bolt. Check the connection of the VVT 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-507943-S07139766872012100900000) . 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 (VVT SENSOR (FOR INTAKE CAMSHAFT) - ECM) Check the harnesses and connectors, referring to DTC P0340 inspection procedure. Refer to «PROCEDURE - Step 2»(ref-507943-S34907395922012100900000) . 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 (VVT SENSOR (FOR EXHAUST CAMSHAFT) - ECM) Check the harnesses and connectors, referring to DTC P0365 inspection procedure. Refer to «PROCEDURE - Step 2»(ref-507944-S19687413332012100900000) . 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-507946-S27953984262012100900000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 82 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
  82. REPLACE VVT SENSOR (FOR INTAKE CAMSHAFT) Replace the VVT sensor (for intake camshaft). Refer to «REMOVAL»(ref-507946-S09647111352012100900000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 83 OK --> END (VVT SENSOR (FOR INTAKE CAMSHAFT) IS DEFECTIVE)
  83. REPLACE VVT SENSOR (FOR EXHAUST CAMSHAFT) Replace the VVT sensor (for exhaust camshaft). Refer to «REMOVAL»(ref-507946-S09647111352012100900000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 122 OK --> END (VVT SENSOR (FOR EXHAUST CAMSHAFT) IS DEFECTIVE)
  84. READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / 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 11»(ref-507911-S37672996572012100900000) . HINT: Perform "Inspection After Repair" after repairing or replacing the engine assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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-507946-S13806071922012100900000) . HINT: Perform "Inspection After Repair" after replacing the engine coolant temperature sensor. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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-507942-S10168898762012100900000) . 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 380 (3.9 kgf/cm 2 , 55 psi) to 420 kPa (4.3 kgf/cm 2 , 61 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 AND LONG FT #2) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Gas AF Control / Long FT #1 and Long FT #2. RESULT Data List Item Result Suspected Area Proceed to Long FT #1, Long FT #2 -15 to +15% Wire harness or connector Fuel A +15% or higher, or less than -15% Fuel injector assembly B HINT: Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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-507943-S07139766872012100900000) . 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-507946-S27953984262012100900000) . 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. B --> See step 94 A --> REPAIR OR REPLACE FUEL LINE
  94. INSPECT FUEL PUMP Inspect the fuel pump. Refer to «INSPECTION»(ref-507947-S15908667302012100900000) . 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. Perform "Inspection After Repair" after replacing the fuel pump. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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-507942-S10168898762012100900000) . 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 AND LONG FT #2) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Gas AF Control / Long FT #1 and Long FT #2. RESULT Data List Item Result Suspected Area Proceed to Long FT #1, Long FT #2 -15 to +15% Wire harness or connector Fuel A +15% or higher, or less than -15% Fuel injector assembly B HINT: Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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-507943-S07139766872012100900000) . 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-507946-S27953984262012100900000) . 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. B --> See step 102 A --> REPAIR OR REPLACE FUEL LINE
  102. INSPECT FUEL PUMP Inspect the fuel pump. Refer to «INSPECTION»(ref-507947-S15908667302012100900000) . 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. Perform "Inspection After Repair" after replacing the fuel pump. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 142 OK: Go to next step
  103. CHECK PURGE VSV Disconnect the fuel vapor feed hose assembly (on the canister side) of the purge VSV. TEXT IN ILLUSTRATION *1 Fuel Vapor Feed Hose Assembly (to Canister) *2 Purge VSV Connector *3 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 DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . 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. Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / 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 11»(ref-507911-S37672996572012100900000) . HINT: Perform "Inspection After Repair" after repairing or replacing the engine assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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-507946-S13806071922012100900000) . HINT: Perform "Inspection After Repair" after replacing the engine coolant temperature sensor. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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 (VVT SENSOR (FOR INTAKE CAMSHAFT)) Check the tightening and installation condition of the VVT sensor (for intake camshaft) bolt. Check the connection of the VVT 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 (VVT SENSOR (FOR EXHAUST CAMSHAFT)) Check the tightening and installation condition of the VVT sensor (for exhaust camshaft) bolt. Check the connection of the VVT 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-507943-S07139766872012100900000) . 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 (VVT SENSOR (FOR INTAKE CAMSHAFT) - ECM) Check the harnesses and connectors, referring to DTC P0340 inspection procedure. Refer to «PROCEDURE - Step 2»(ref-507943-S34907395922012100900000) . 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 (VVT SENSOR (FOR EXHAUST CAMSHAFT) - ECM) Check the harnesses and connectors, referring to DTC P0365 inspection procedure. Refer to «PROCEDURE - Step 2»(ref-507944-S19687413332012100900000) . 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-507946-S27953984262012100900000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 116 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
  116. REPLACE VVT SENSOR (FOR INTAKE CAMSHAFT) Replace the VVT sensor (for intake camshaft). Refer to «REMOVAL»(ref-507946-S09647111352012100900000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 117 OK --> END (VVT SENSOR (FOR INTAKE CAMSHAFT) IS DEFECTIVE)
  117. REPLACE VVT SENSOR (FOR EXHAUST CAMSHAFT) Replace the VVT sensor (for exhaust camshaft). Refer to «REMOVAL»(ref-507946-S09647111352012100900000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 122 OK --> END (VVT SENSOR (FOR EXHAUST CAMSHAFT) IS DEFECTIVE)
  118. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-507773-S15125614812012100900000) .
  119. REPAIR ENGINE IMMOBILISER SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-507774-S10753414552012100900000) .
  120. CHECK STARTER SIGNAL CIRCUIT. Refer to «Starter Signal Circuit»(ref-507941-S14255139492012100900000) .
  121. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-507946-S27953984262012100900000) .
  122. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000) .
  123. CHECK FUEL PUMP CONTROL CIRCUIT. Refer to «Fuel Pump Control Circuit»(ref-507941-S08088126702012100900000) .
  124. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-507946-S29068191982012100900000) .
  125. CHECK FUEL INJECTOR CIRCUIT. Refer to «INSPECTION PROCEDURE»(ref-507941-S22347407832012100900000) .
  126. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-507947-S28604865482012100900000) .
  127. REPLACE FUEL PRESSURE REGULATOR. Refer to «REMOVAL»(ref-507947-S25443544862012100900000) .
  128. CLEAN OR REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY. Refer to «REMOVAL»(ref-507946-S23353884042012100900000) .
  129. INSPECT STARTER ASSEMBLY. Refer to «INSPECTION»(ref-507945-S30563584952012100900000) .
  130. REPLACE STARTER ASSEMBLY. Refer to «REMOVAL»(ref-507945-S16317711642012100900000) .
  131. REPLACE DRIVE PLATE AND RING GEAR SUB-ASSEMBLY. Refer to «REMOVAL»(ref-507911-S25092091612012100900000) .
  132. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-507946-S22833039442012100900000) .
  133. CHECK CRANKSHAFT POSITION SENSOR CIRCUIT. Refer to «INSPECTION PROCEDURE»(ref-507943-S24307887912012100900000) .
  134. CHECK IGNITION COIL POWER SOURCE CIRCUIT. Refer to «PROCEDURE - Step 5»(ref-507944-S13033383102012100900000) .
  135. REPLACE IGNITION COIL ASSEMBLY. Refer to «REMOVAL»(ref-507946-S22833039442012100900000) .
  136. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE OR EXHAUST CAMSHAFT). Refer to «REMOVAL»(ref-507946-S01666725132012100900000) .
  137. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-507946-S33841400752012100900000) .
  138. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-507946-S02645242072012100900000) .
  139. REPLACE SPARK PLUG (ABNORMAL CYLINDER). Refer to «REMOVAL»(ref-507946-S22833039442012100900000) .
  140. REPLACE SPARK PLUG (ALL CYLINDER). Refer to «REMOVAL»(ref-507946-S22833039442012100900000) .
  141. CHECK VALVE TIMING. Refer to «PROCEDURE - Step 5»(ref-507943-S30974061752012100900000) .
  142. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-507947-S16726965352012100900000) .
  143. INSPECT PURGE VSV. Refer to «INSPECTION»(ref-507921-S35615007302012100900000) .

Note. After turning engine 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 .

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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

HINT

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  2. The throttle actuator current (Throttle Motor Current) and the throttle actuator duty ratio (Throttle Motor Duty (Open) / Throttle Motor Duty (Close)) can be read using the Techstream. However, the ECM shuts off the throttle actuator current when the electronic throttle control system malfunctions.

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 395

Scheme 395: PROCEDURE
Scheme 395: PROCEDURE
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2109) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. RESULT Result Proceed to 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 engine switch on (IG). Using the Techstream, check "ISC Learning Value" in the freeze frame data. Refer to «FREEZE FRAME DATA»(ref-507773-S36728116192012100900000) . 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 WITH MOTOR 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) Perform "Inspection After Repair" after cleaning the throttle with motor body assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . Connect the Techstream to the DLC3. Turn the Techstream on. Enter the following menus: Powertrain / Engine / 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. HINT: Perform "Inspection After Repair" after replacing the throttle with motor body assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 6 OK --> END
  5. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-507773-S15125614812012100900000) .
  6. REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY. Refer to «REMOVAL»(ref-507946-S23353884042012100900000) .

HINT

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  2. Refer to "Data List / Active Test" [Throttle Position Command, Throttle Position No. 1, Throttle Motor Current, Throttle Motor Duty (Open), Throttle Motor Duty (Close)]. Refer to «DATA LIST / ACTIVE TEST»(ref-507773-S27336102882012100900000) .

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

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

  1. Refer to "Data List / Active Test" [Throttle Position Commanded, Throttle Position No. 1, Throttle Motor Current, Throttle Motor Duty (Open) and Throttle Motor Duty (Close)]. Refer to «DATA LIST / ACTIVE TEST»(ref-507773-S27336102882012100900000) .
  2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 396

Scheme 396: PROCEDURE
Scheme 396: PROCEDURE

Scheme 397

Scheme 397
Scheme 397
  1. READ VALUE USING TECHSTREAM (ACCEL SENSOR OUT) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Gas Throttle / Accel Sensor Out No. 1 and Accel Sensor Out No. 2. Read the value displayed on the Techstream. Standard Voltage Accelerator Pedal Operation Accel Sensor Out No. 1 Accel Sensor Out No. 2 Difference between Accel Sensor Out No. 1 and Accel Sensor Out No. 2 Fully Released 0.5 to 1.1 V 1.2 to 2.0 V More than 0.02 V Fully Depressed 2.6 to 4.5 V 3.4 to 4.98 V TEXT IN ILLUSTRATION *a Fully Depressed *b Fully Released NG --> See step 2 OK --> See step 8
  2. CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL SENSOR ASSEMBLY - ECM) Disconnect the accelerator pedal sensor assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A36-6 (VPA) - A25-54 (VPA) Always Below 1 ohms A36-5 (EPA) - A25-55 (EPA) Always Below 1 ohms A36-4 (VCPA) - A25-56 (VCPA) Always Below 1 ohms A36-3 (VPA2) - A25-57 (VPA2) Always Below 1 ohms A36-2 (EPA2) - A25-58 (EPA2) Always Below 1 ohms A36-1 (VCP2) - A25-59 (VCP2) Always Below 1 ohms A36-6 (VPA) or A25-54 (VPA) - Body ground Always 10 kohms or higher A36-4 (VCPA) or A25-56 (VCPA) - Body ground Always 10 kohms or higher A36-3 (VPA2) or A25-57 (VPA2) - Body ground Always 10 kohms or higher A36-1 (VCP2) or A25-59 (VCP2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. CHECK TERMINAL VOLTAGE (POWER SOURCE OF ACCELERATOR PEDAL SENSOR ASSEMBLY) Disconnect the accelerator pedal sensor assembly connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A36-4 (VCPA) - A36-5 (EPA) Engine switch on (IG) 4.5 to 5.5 V A36-1 (VCP2) - A36-2 (EPA2) Engine switch on (IG) 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Accelerator Pedal Sensor Assembly) NG --> See step 6 OK: Go to next step
  4. REPLACE ACCELERATOR PEDAL SENSOR ASSEMBLY Replace the accelerator pedal sensor assembly. Refer to «REMOVAL»(ref-507946-S08496674932012100900000) . NEXT: Go to next step
  5. CHECK WHETHER DTC OUTPUT RECURS (ACCELERATOR PEDAL SENSOR DTCS) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . Turn the engine switch off and wait for at least 30 seconds. Turn the engine switch on (IG) and turn the Techstream on. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P2120, P2122, P2123, P2125, P2127, P2128, and/or P2138 are output A DTC is not output B B --> END A --> See step 7
  6. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000) .
  7. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000) .
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-507773-S29925410012012100900000) .

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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

HINT

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

HINT

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  2. Refer to A/F Sensor Determination (worst value) #1, A/F Sensor Determination (worst value) #2, Engine Speed Fluctuation Avg (worst value) #1 to #6, Cylinder #1 to #6 Misfire Count, Short FT #1, Short FT #2, Long FT #1 and long FT #2 in the Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST»(ref-507773-S27336102882012100900000) .
  3. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
  4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
  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 for circuits related to this system before performing the following inspection procedure.

HINT

  1. Refer to "Data List / Active Test" [AFS Voltage B1S1 and AFS Voltage B2S1]. Refer to «DATA LIST / ACTIVE TEST»(ref-507773-S27336102882012100900000) .
  2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.
  3. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
  4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
  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.

DTC SUMMARY

DTC No.Monitoring ItemMalfunction Detection ConditionTrouble AreaDetection TimingDetection Logic
P2420Vent valve stuck open (vent)Following condition met during key-off EVAP monitor: EVAP pressure change when vent valve closed (on) less than 0.3 kPa(gauge) [2.25 mmHg(gauge)]Canister pump module (reference orifice, leak detection pump, vent valve) Connector/wire harness (Canister pump module - ECM) Canister (filter inside canister clogged) ECMWhile engine switch off2 trip

HINT

The vent valve is built into the canister pump module.

Refer to EVAP System. Refer to INSPECTION PROCEDURE .

DTC No.Monitoring ItemMalfunction Detection ConditionTrouble AreaDetection TimingDetection Logic
P2610Soak timer (built into ECM)ECM internal malfunction.ECMEngine running2 trip

HINT

  1. DTC P2610 is set if an internal ECM problem is detected. Diagnostic procedures are not required. ECM replacement is required.
  2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 398

Scheme 398: PROCEDURE
Scheme 398: PROCEDURE
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC U0101) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC U0101 is output A DTC U0101 and other DTCs are output B HINT: If any DTCs other than U0101 are output, troubleshoot those DTCs first. B --> See step 6 A: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF TCM) Disconnect the TCM connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E7-1 (BATT) - E7-8 (E1) Always 11 to 14 V E7-18 (+B) - E7-8 (E1) Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to TCM) NG --> See step 7 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (TCM - ECM) Disconnect the TCM connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E7-6 (CAN+) - E26-31 (CAN+) Always Below 1 ohms E7-7 (CAN-) - E26-1 (CAN-) Always Below 1 ohms E7-6 (CAN+) or E26-31 (CAN+) - Body ground Always 10 kohms or higher E7-7 (CAN-) or E26-1 (CAN-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. REPLACE TCM Replace the TCM. Refer to «REMOVAL»(ref-507950-S38215049142012100900000) . NEXT: Go to next step
  5. CHECK WHETHER DTC OUTPUT RECURS (DTC U0101) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . Turn the engine switch off. Turn the engine switch on (IG). Turn the Techstream on. Wait for 5 seconds or more. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC is not output A DTC U0101 is output B B --> See step 8 A --> END
  6. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-507773-S15125614812012100900000) .
  7. GO TO TCM POWER SOURCE CIRCUIT. Refer to «ECU Power Source Circuit»(ref-507952-S23504926932012100900000) .
  8. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000) .

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

Scheme 399

Scheme 399: PROCEDURE
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  1. CHECK VACUUM HOSES Check the air and vacuum hoses for looseness, disconnection and blockage. OK No looseness, disconnection or blockage. TEXT IN ILLUSTRATION *1 Engine *2 Duty Vacuum Switching Valve (for Active Control Engine Mount) *3 Front Engine Mounting Insulator Assembly *4 ECM *5 Air Cleaner *6 Vacuum Tank *a to Vacuum Switching Valve (for Air Intake Control Valve) NG --> REPAIR OR REPLACE VACUUM HOSES OK: Go to next step
  2. CHECK VACUUM Disconnect the vacuum hose from the air cleaner cap. Start the engine. Check that the disconnected port located on the vacuum tank applies suction to your finger. OK Vacuum exists. NG --> CHECK AND REPLACE VACUUM SOURCE AND HOSES OK: Go to next step
  3. INSPECT DUTY VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT) (OPERATION) Inspect the duty vacuum switching valve (for active control engine mount) operation. Refer to «INSPECTION - Step 1»(ref-507946-S20245441222012100900000) . NG --> See step 9 OK: Go to next step
  4. INSPECT DUTY VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT) (RESISTANCE) Inspect the duty vacuum switching valve (for active control engine mount) resistance. Refer to «INSPECTION - Step 2»(ref-507946-S20245441222012100900000) . NG --> See step 9 OK: Go to next step
  5. INSPECT FRONT ENGINE MOUNTING INSULATOR ASSEMBLY Inspect the front engine mounting insulator assembly. Refer to «ON-VEHICLE INSPECTION»(ref-507946-S42687835822012100900000) . NG --> See step 10 OK: Go to next step
  6. CHECK TERMINAL VOLTAGE (POWER SOURCE OF DUTY VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT)) Disconnect the duty vacuum switching valve (for active control engine mount) connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E10-1 - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Duty Vacuum Switching Valve (for Active Control Engine Mount)) NG --> See step 8 OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (DUTY VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT) - ECM) Disconnect the duty vacuum switching valve (for active control engine mount) connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E10-2 - A25-8 (ACM) Always Below 1 ohms E10-2 or A25-8 (ACM) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
  8. CHECK HARNESS AND CONNECTOR (DUTY VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT) - NO. 1 INTEGRATION RELAY) Disconnect the duty vacuum switching valve (for active control engine mount) connector. Remove the No. 1 integration relay from the engine room relay block and junction block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E10-1 - 1A-8 Always Below 1 ohms E10-1 or 1A-8 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
  9. REPLACE DUTY VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT). Refer to «REMOVAL»(ref-507946-S28110881302012100900000) .
  10. REPLACE FRONT ENGINE MOUNTING INSULATOR ASSEMBLY. Refer to «REMOVAL»(ref-507946-S02248303642012100900000) .
  11. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000) .
  12. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-507941-S41621416682012100900000) .

Note. Inspect the fuses for 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. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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  1. CONFIRM DTC Turn the engine switch off and wait for 10 seconds. Turn the engine switch on (IG). Turn the engine switch off and wait for 10 seconds. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Confirm the DTCs and freeze frame data. If any EVAP system DTCs are stored, the malfunctioning area can be determined using the table below. NOTE: If the reference pressure difference between the first and second checks is greater than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) are stored. NEXT: Go to next step
  2. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE) NOTE: The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. It takes a maximum of approximately 24 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 less than 35°C (95°F). Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine / Trouble Codes. HINT: If no pending DTCs are displayed, perform the Confirmation Driving Pattern. After this confirmation, check for pending DTCs. If no DTCs are displayed, the EVAP system is normal. NEXT: Go to next step
  3. PERFORM EVAP SYSTEM CHECK (MANUAL MODE) NOTE: In the Evaporative System Check (Manual Mode), the series of 6 Evaporative System Check steps are performed 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 less than 35°C (95°F). Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Manual Mode. NEXT: Go to next step
  4. PERFORM EVAP SYSTEM CHECK (STEP 1/6) Check the EVAP pressure in step 1/6. RESULT DTC *1 Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure Not yet determined A P0451 EVAP pressure fluctuates by +/-0.3 kPa(gauge) [2.25 mmHg(gauge)] or higher Canister pressure sensor signal noise B (P0452 or P0453) *2 EVAP pressure is below 42.11 kPa(abs) [315.867 mmHg(abs)] or 123.761 kPa(abs) [928.331 mmHg(abs)] or higher EVAP pressure deviates +/-10 kPa(gauge) [75 mmHg(gauge)] 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 engine switch is turned on (IG). 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 EVAP SYSTEM CHECK (STEP 1/6 TO 2/6) Check the EVAP pressure in steps 1/6 and 2/6. RESULT DTC* Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure during step 1/6. Then decreases to reference pressure Not yet determined A P2402 Small difference between EVAP pressures during steps 1/6 and 2/6 Leak detection pump stuck ON B *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. HINT: The first reference pressure is the value determined in step 2/6. B --> See step 31 A: Go to next step
  6. PERFORM EVAP SYSTEM CHECK (STEP 2/6) HINT: Make a note of the pressures checked in inspection items (A) and (B) below. Check the EVAP pressure 4 seconds after the leak detection pump is activated*1 (A). *1: The leak detection pump begins to operate as step 1/6 finishes and step 2/6 starts. Check the EVAP pressure again when it has stabilized. This pressure is the reference pressure (B). RESULT DTC*2 Result Suspected Trouble Area Proceed to - EVAP pressure in inspection item (B) is between -4.85 kPa(gauge) and -1.057 kPa(gauge) [-36.38 mmHg(gauge) and -7.929 mmHg(gauge)] Not yet determined A P043F and P2401 EVAP pressure in inspection item (B) is -1.057 kPa(gauge) [-7.929 mmHg(gauge)] or higher Reference orifice high-flow Leak detection pump stuck off B P043E EVAP pressure in inspection item (B) is less than -4.85 kPa(gauge) [-36.38 mmHg(gauge)] Reference orifice clogged C P2419 EVAP pressure in inspection item (A) is higher than -0.25 kPa(gauge) [-1.875 mmHg(gauge)] Vent valve stuck closed Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) D *2: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. B --> See step 11 C --> See step 38 D --> See step 13 A: Go to next step
  7. PERFORM EVAP SYSTEM CHECK (STEP 2/6 TO 3/6) Check the EVAP pressure in step 3/6. RESULT DTC* Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa(gauge) [2.25 mmHg(gauge)] 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 even after 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" procedure above. B --> See step 27 C --> See step 15 A: Go to next step
  8. PERFORM EVAP SYSTEM CHECK (STEP 3/6) Wait until the EVAP pressure change is less than 0.1 kPa(gauge) [0.75 mmHg(gauge)] for 40 seconds. Measure the EVAP pressure and record it. HINT: A few minutes are required for the EVAP pressure to become saturated. When there is little fuel in the fuel tank, it takes up to 15 minutes. NEXT: Go to next step
  9. PERFORM EVAP SYSTEM CHECK (STEP 4/6) Check the EVAP pressure in step 4/6. RESULT DTC*1 Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa(gauge) [2.25 mmHg(gauge)] 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(gauge) [2.25 mmHg(gauge)] 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 air surge tank assembly Problems in EVAP hose between canister and purge VSV ECM B P0441 Variation in EVAP pressure is less than 0.3 kPa(gauge) [2.25 mmHg(gauge)] 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 air surge tank assembly 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 EVAP SYSTEM CHECK (STEP 5/6) Check the EVAP pressure in step 5/6. Compare the EVAP pressure in step 3/6 and the second reference pressure (step 5/6). RESULT DTC* Result Suspected Trouble Area Proceed to - EVAP pressure from step 3/6 lower than second reference pressure (step 5/6) Not yet determined (no leakage from EVAP system) A P0441 and P0455 EVAP pressure from 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 from step 3/6 higher than second reference pressure (step 5/6) EVAP small leak B *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. A --> See step 43 B --> See step 17
  11. PERFORM EVAP SYSTEM CHECK (STEP 3/6) Check the EVAP pressure in step 3/6. RESULT DTC* Result Suspected Trouble Area Proceed to P043F EVAP pressure less than [reference pressure] measured in step 2/6 Reference orifice high-flow A P2401 EVAP pressure almost same as [reference pressure] measured in step 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" procedure 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-507944-S07523414272012100900000) . NEXT --> See step 49
  13. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the engine switch off. Disconnect the canister pump module connector. TEXT IN ILLUSTRATION *a Component without harness connected (Canister Pump Module) Apply the battery voltage to terminals VLVB and VGND of the canister pump module. Touch the canister pump module to confirm the vent valve operation. RESULT Condition Tester Result Suspected Trouble Area Proceed to Apply battery voltage to terminals VLVB and VGND 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 (CANISTER PUMP MODULE - ECM) Turn the engine switch off. 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 A25-7 (VPMP) - N35-1 (VGND) Always Below 1 ohms A25-7 (VPMP) or N35-1 (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) Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to O12-4 (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) 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 Area Proceed to A25-6 (MPMP) - N35-3 (MTRB) Always Below 1 ohms Canister pump module ECM A 10 kohms or higher Wire harness or connector between ECM and canister pump module B A --> See step 45 B --> See step 40
  17. PERFORM ACTIVE TEST USING TECHSTREAM (PURGE VSV) Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for EVAP Control. Disconnect the fuel vapor feed hose assembly (connected to the canister) from the purge VSV. TEXT IN ILLUSTRATION *1 Purge VSV *2 Fuel Vapor Feed Hose Assembly (to Canister) Start the engine. Using the Techstream, turn off the purge VSV (Activate the VSV for EVAP Control: OFF). Use your finger to confirm that the purge VSV has no suction. Using the Techstream, turn on the purge VSV (Activate the VSV for EVAP Control: ON). Use your finger to confirm that the purge VSV has suction. RESULT Test Result Suspected Trouble Area Proceed to No suction when purge VSV turned off, and suction applied when turned on Blockage in the purge line is considered (based on result of step 9): Problems with EVAP hose between canister and purge VSV Canister (charcoal filter inside canister) clogged ECM A Leakage is considered (based on result of step 10): Fuel cap Leakage from EVAP line, fuel tank, or canister 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 air surge tank assembly 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-507921-S32427846362012100900000) . OK No blockages in the canister. OK --> See step 47 NG --> See step 48
  20. CHECK FUEL CAP Check that the fuel cap is correctly installed and confirm that the fuel cap meets OEM specifications. Tighten the fuel cap firmly (only one click sound could be heard). HINT: If an EVAP tester is available, check the fuel cap using the 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(gauge) [24 to 27.75 mmHg(gauge)] using an EVAP tester pump. Seal the adapter and wait for 2 minutes. Check the pressure. If the pressure is 2 kPa(gauge) [15 mmHg(gauge)] or higher, the fuel cap is normal. RESULT Test Result Suspected Trouble Area Proceed to Fuel cap correctly installed - A Fuel cap loose Fuel cap improperly installed Defective fuel cap Fuel cap does not meet OEM specifications B Defective fuel cap - B No fuel cap - C A --> See step 37 B --> See step 35 C --> See step 36
  21. INSPECT PURGE VSV Turn the engine switch off. Disconnect the purge VSV connector. TEXT IN ILLUSTRATION *1 Fuel Vapor Feed Hose Assembly (to Canister) *2 Purge VSV Connector *3 Purge VSV Disconnect the fuel vapor feed hose assembly (connected to the canister) from the purge VSV. Start the engine. Use your finger to confirm that the purge VSV has no suction. RESULT Test Result Suspected Trouble Area Proceed to No suction Wire harness or connector between purge VSV and ECM 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 AIR SURGE TANK ASSEMBLY) Disconnect the fuel vapor feed hose assembly (connected to the intake air surge tank assembly) from the purge VSV. TEXT IN ILLUSTRATION *1 Purge VSV *2 Fuel Vapor Feed Hose Assembly (to Intake Air Surge Tank Assembly) Start the engine. Use your finger to confirm that the hose has suction. RESULT Test Result Suspected Trouble Area Proceed to Suction applied EVAP hose between purge VSV and intake air surge tank assembly normal Purge VSV Purge VSV power source Wire harness or connector between purge VSV and ECM A No suction Intake air surge tank assembly port EVAP hose between purge VSV and intake air surge tank assembly B B --> See step 34 A: Go to next step
  24. INSPECT PURGE VSV Remove the purge VSV. Apply battery voltage to the terminals of the purge VSV. TEXT IN ILLUSTRATION *1 Purge VSV Confirm that air flows from port E to port F. RESULT Test Result Condition Suspected Trouble Area Proceed to Air flows Battery voltage is applied to purge VSV terminals Purge VSV normal Purge VSV power source Wire harness or connector between purge VSV and ECM A No air flow Battery voltage is applied to purge VSV terminals Purge VSV B B --> See step 39 A: Go to next step
  25. CHECK TERMINAL VOLTAGE (POWER SOURCE OF PURGE VSV) Disconnect the purge VSV connector. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Purge VSV) Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Switch Condition Specified Condition Suspected Trouble Area Proceed to E50-2 - Body ground Engine switch on (IG) 11 to 14 V Purge VSV power source normal Wire harness or connector between purge VSV and ECM A Other than result above Wire harness or connectors between purge VSV and battery B B --> See step 40 A: Go to next step
  26. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) Disconnect the ECM connector. Disconnect the purge VSV connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E50-1 - E26-48 (PRG) Always Below 1 ohms E50-1 or E26-48 (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 engine switch off. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Canister Pump Module) - - Disconnect the canister pump module connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Switch Condition Specified Condition Suspected Trouble Area Proceed to N35-5 (VLVB) - Body ground Engine switch on (IG) 11 to 14 V Wire harness or connector between vent valve and ECM Vent valve Canister (charcoal filter inside canister) clogged ECM A Below 3 V Power source wire harness of vent valve B B --> See step 40 A: Go to next step
  28. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the engine switch off. Disconnect the canister pump module connector. TEXT IN ILLUSTRATION *a Component without harness connected (Canister Pump Module) Apply the battery voltage to terminals VLVB and VGND of the canister pump module. Touch the canister pump module to confirm the vent valve operation. RESULT Condition Tester Result Suspected Trouble Area Proceed to Apply battery voltage to terminals VLVB and VGND Operating Wire harness or connector between vent valve and ECM Canister (charcoal filter inside canister) clogged ECM A Not operating Vent valve B B --> See step 38 A: Go to next step
  29. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Turn the engine switch off. Disconnect the canister pump module connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Test Result Suspected Trouble Area Proceed to N35-1 (VGND) - A25-7 (VPMP) 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-507921-S32427846362012100900000) . OK No blockages in the canister. OK --> See step 47 NG --> See step 48
  31. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VACUUM PUMP) Turn the engine switch off. Disconnect the canister pump module connector. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Canister Pump Module) - - Turn the engine switch on (IG). Enter the following menus: Powertrain / Engine / Active Test / Activate the Vacuum Pump. Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Condition Test Result Suspected Trouble Area Proceed to N35-3 (MTRB) - Body ground Leak detection pump on and off (Active Test ON and OFF) Below 3 V when OFF 9 to 14 V when ON Wire harness or connector between leak detection pump and body ground Leak detection pump A Below 3 V when OFF and ON Wire harness or connector between leak detection pump and ECM ECM B 9 to 14 V when OFF and ON ECM C B --> See step 33 C --> See step 47 A: Go to next step
  32. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND) Turn the engine switch off. Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to N35-4 (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 engine switch off. 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 A25-6 (MPMP) - N35-3 (MTRB) Always Below 1 ohms A25-6 (MPMP) or N35-3 (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 AIR SURGE TANK ASSEMBLY (EVAP PURGE PORT) Stop the engine. Disconnect the EVAP hose from the intake air surge tank assembly. Start the engine. Use your finger to confirm that the port of the intake air surge tank assembly has suction. RESULT Tester Connection Suspected Trouble Area Proceed to Suction applied EVAP hose between intake air surge tank assembly and purge VSV A No suction Intake air surge tank assembly B A --> See step 41 B --> See step 42
  35. CORRECTLY REINSTALL OR REPLACE FUEL CAP HINT: When reinstalling the fuel cap, tighten it firmly (only one click sound could be head). When replacing the fuel cap, use a fuel cap that meets OEM specifications, and install it firmly. NEXT --> See step 49
  36. REPLACE FUEL CAP HINT: When installing the fuel cap, tighten it firmly (only one click sound could be head). NEXT --> See step 49
  37. LOCATE EVAP LEAK PART Disconnect the vent hose. TEXT IN ILLUSTRATION *1 Fuel Tank *2 Canister *3 Canister Filter *4 Fuel Cap *5 Canister Pump Module - - *a Disconnect the vent hose here - - Connect the EVAP pressure tester tool to the canister pump module with the adapter. TEXT IN ILLUSTRATION *1 Canister Pump Module *2 Adapter *3 EVAP Pressure Tester Tool - - Pressurize the EVAP system to 3.2 to 3.7 kPa(gauge) [24 to 28 mmHg(gauge)]. Apply soapy water to the piping and connecting parts of the EVAP system. Look for areas where bubbles appear. This indicates the leak point. Repair or replace the leak point. HINT: Disconnect the hose between the canister and 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 49
  38. REPLACE CANISTER PUMP MODULE Replace the canister pump module. Refer to «REMOVAL»(ref-507921-S10208437572012100900000) . NOTE: When replacing canister pump module, check the canister pump module interior, canister 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. If liquids are present in canister interior, replace canister and canister pump module together. Check for filter blockage in the canister. If the charcoal filter inside the canister is clogged, replace canister and canister pump module together. Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter. TEXT IN ILLUSTRATION *1 Fuel Tank Vent Hose *2 Air Inlet Port *3 Vent Hose *4 Fuel Tank *5 Canister Pump Module *6 Canister *7 Canister Filter - - *a Inspection Area (check for disconnection and/or cracks) - - NEXT --> See step 49
  39. REPLACE PURGE VSV Replace the purge VSV. Refer to «REMOVAL»(ref-507921-S18102513712012100900000) . NEXT --> See step 49
  40. REPAIR OR REPLACE HARNESS OR CONNECTOR NEXT --> See step 49
  41. REPAIR OR REPLACE EVAP PURGE LINE (INTAKE AIR SURGE TANK ASSEMBLY - PURGE VSV) NEXT --> See step 49
  42. INSPECT INTAKE AIR SURGE TANK ASSEMBLY (EVAP PURGE PORT) Check that the EVAP purge port of the intake air surge tank assembly is not clogged. If necessary, replace the intake air surge tank assembly. Refer to «REMOVAL»(ref-507949-S05965159782012100900000) . NEXT --> See step 49
  43. REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS Repair the malfunctioning areas indicated by the DTCs that had been confirmed when the vehicle was brought in. NEXT --> See step 49
  44. REPAIR OR REPLACE EVAP PURGE LINE (PURGE VSV - CANISTER) NEXT --> See step 49
  45. REPLACE CANISTER PUMP MODULE Replace the canister pump module. Refer to «REMOVAL»(ref-507921-S10208437572012100900000) . NOTE: When replacing canister pump module, check the canister pump module interior, canister 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. If liquids are present in canister interior, replace canister and canister pump module together. Check for filter blockage in the canister. If the charcoal filter inside the canister is clogged, replace canister and canister pump module together. Check for filter blockage in the canister filter. If the canister filter has blockages, replace the canister filter. TEXT IN ILLUSTRATION *1 Fuel Tank Vent Hose *2 Air Inlet Port *3 Vent Hose *4 Fuel Tank *5 Canister Pump Module *6 Canister *7 Canister Filter - - *a Inspection Area (check for disconnection and/or cracks) - - NEXT: Go to next step
  46. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE) NOTE: The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. It takes a maximum of approximately 24 minutes. Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable. Do not run the engine in this step. When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature below 35°C (95°F). Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine / Trouble Codes. Result Proceed to EVAP system DTCs are output A DTC is not output (Pending DTC is not output) B B --> END A: Go to next step
  47. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000) . NEXT --> See step 49
  48. REPLACE CANISTER Replace the canister. Refer to «REMOVAL»(ref-507921-S10208437572012100900000) . 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. TEXT IN ILLUSTRATION *1 Fuel Tank Vent Hose *2 Air Inlet Port *3 Vent Hose *4 Fuel Tank *5 Canister Pump Module *6 Canister *7 Canister Filter - - *a Inspection Area (check for disconnection and/or cracks) - - NEXT: Go to next step
  49. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE) NOTE: The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. It takes a maximum of approximately 24 minutes. Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable. Do not run the engine in this step. When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature below 35°C (95°F). Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine / Trouble Codes. HINT: If no pending DTCs are found, the repair has been successfully completed. NEXT --> END

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

Scheme 421

Scheme 421: PROCEDURE
Scheme 421: PROCEDURE

Scheme 422

Scheme 422
Scheme 422

Scheme 423

Scheme 423
Scheme 423
  1. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND) Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E26-49 (E1) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (IGSW VOLTAGE) Disconnect the ECM connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A25-32 (IGSW) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> See step 6 OK: Go to next step
  3. INSPECT NO. 1 INTEGRATION RELAY (EFI MAIN RELAY) Inspect the No. 1 integration relay (EFI MAIN relay). Refer to «INSPECTION»(ref-507946-S03025636822012100900000) . NG --> See step 11 OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - ECM) Remove the No. 1 integration relay from the engine room relay block and junction block assembly. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1C-9 - A25-2 (+B) Always Below 1 ohms 1C-10 - A25-3 (+B2) Always Below 1 ohms 1C-7 - A25-46 (MREL) Always Below 1 ohms 1C-9 or A25-2 (+B) - Body ground Always 10 kohms or higher 1C-10 or A25-3 (+B2) - Body ground Always 10 kohms or higher 1C-7 or A25-46 (MREL) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. CHECK TERMINAL VOLTAGE (POWER SOURCE OF NO. 1 INTEGRATION RELAY) Remove the No. 1 integration relay from the engine room relay block and junction block assembly. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 1B-1 - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to No. 1 Integration Relay) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - NO. 1 INTEGRATION RELAY) OK --> See step 12
  6. INSPECT NO. 1 INTEGRATION RELAY (IG2 RELAY) Inspect the No. 1 integration relay (IG2 relay). Refer to «INSPECTION»(ref-507946-S03025636822012100900000) . NG --> See step 13 OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - ECM) Remove the No. 1 integration relay from the engine room relay block and junction block assembly. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1C-1 - A25-32 (IGSW) Always Below 1 ohms 1C-1 or A25-32 (IGSW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  8. CHECK TERMINAL VOLTAGE (POWER SOURCE OF NO. 1 INTEGRATION RELAY) Remove the No. 1 integration relay from the engine room relay block and junction block assembly. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 1D-3 - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to No. 1 Integration Relay) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - NO. 1 INTEGRATION RELAY) OK: Go to next step
  9. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - BODY GROUND) Remove the No. 1 integration relay from the engine room relay block and junction block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1E-2 - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  10. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - NO. 1 INTEGRATION RELAY Disconnect the certification ECU (smart key ECU assembly) connector. Remove the No. 1 integration relay from the engine room relay block and junction block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition I78-9 (IG2D) - 1C-8 Always Below 1 ohms I78-9 (IG2D) or 1C-8 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 14
  11. REPLACE NO. 1 INTEGRATION RELAY (EFI MAIN RELAY). Refer to «REMOVAL»(ref-507946-S19996491392012100900000) .
  12. PROCEED TO NEXT SUSPECTED AREA SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-507773-S16650536182012100900000) .
  13. REPLACE NO. 1 INTEGRATION RELAY (IG2 RELAY). Refer to «REMOVAL»(ref-507946-S19996491392012100900000) .
  14. GO TO SMART KEY SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-507760-S20559569422012100900000) .

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

Scheme 424

Scheme 424: PROCEDURE
Scheme 424: PROCEDURE

Scheme 425

Scheme 425
Scheme 425
  1. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. Check whether fuel pump operating sounds can be heard while operating the fuel pump using the Techstream. OK Operating sounds can be heard from fuel pump. RESULT Result Proceed to NG A OK B B --> See step 11 A: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL PUMP CONTROL ECU) Disconnect the fuel pump control ECU assembly connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition N30-1 (+B) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Fuel Pump Control ECU) NG --> See step 9 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (FUEL PUMP CONTROL ECU ASSEMBLY - BODY GROUND) Disconnect the fuel pump control ECU assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N30-4 (E) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (FUEL PUMP CONTROL ECU ASSEMBLY - FUEL PUMP) Disconnect the fuel pump control ECU assembly connector. Disconnect the fuel pump connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N30-6 (FP) - N11-4 (B) Always Below 1 ohms N30-5 (FP-) - N11-5 (E) Always Below 1 ohms N30-6 (FP) or N11-4 (B) - Body ground Always 10 kohms or higher N30-5 (FP-) or N11-5 (E) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. INSPECT FUEL PUMP Inspect the fuel pump. Refer to «INSPECTION»(ref-507947-S15908667302012100900000) . HINT: Perform "Inspection After Repair" after replacing the fuel pump. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 16 OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (FUEL PUMP CONTROL ECU ASSEMBLY - ECM) Disconnect the fuel pump control ECU assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N30-2 (FPC) - A25-18 (FPC) Always Below 1 ohms N30-2 (FPC) or A25-18 (FPC) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  7. REPLACE FUEL PUMP CONTROL ECU ASSEMBLY Replace the fuel pump control ECU assembly. Refer to «REMOVAL»(ref-507947-S18210893172012100900000) . NEXT: Go to next step
  8. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Check the fuel pump operation. OK Malfunction has been repaired successfully. NG --> See step 17 OK --> END
  9. CHECK HARNESS AND CONNECTOR (FUEL PUMP CONTROL ECU ASSEMBLY - NO. 1 INTEGRATION RELAY) Disconnect the fuel pump control ECU assembly connector. Remove the No. 1 integration relay from the engine room relay block and junction block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N30-1 (+B) - 1C-6 Always Below 1 ohms N30-1 (+B) or 1C-6 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  10. INSPECT NO. 1 INTEGRATION RELAY (EFI MAIN RELAY) Inspect the No. 1 integration relay (EFI MAIN relay). Refer to «INSPECTION»(ref-507946-S03025636822012100900000) . NG --> See step 19 OK --> See step 18
  11. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP DUTY) Remove the fuel pump. Refer to «REMOVAL»(ref-507947-S16726965352012100900000) . Clean the fuel pump to completely remove any remaining fuel. Connect the fuel pump connector. WARNING: Confirm that no fuel remains inside or on the outside of the fuel pump. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump Duty. Operate the fuel pump using the active test function and measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Techstream Operation Specified Condition 4 (B) - 5 (E) Fuel pump control duty: 25% 3.4 to 4.1 V Fuel pump control duty: 80% 10.0 to 12.5 V TEXT IN ILLUSTRATION *a Component with harness connected (Fuel Pump) Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. Operate the fuel pump using the active test function and measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Techstream Operation Specified Condition 4 (B) - 5 (E) ON (Fuel pump control duty: 90%) 10.2 to 14.0 V HINT: Be sure to measure the voltage with the all connectors connected. Before performing this inspection, check that the battery voltage is between 11 and 14 V (not depleted). NG --> See step 14 OK: Go to next step
  12. CHECK HARNESS AND CONNECTOR (FUEL PUMP CONTROL ECU ASSEMBLY - ECM) Disconnect the fuel pump control ECU assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N30-2 (FPC) - A25-18 (FPC) Always Below 1 ohms N30-2 (FPC) or A25-18 (FPC) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  13. REPLACE FUEL PUMP Replace the fuel pump. Refer to «REMOVAL»(ref-507947-S16726965352012100900000) . NEXT --> See step 15
  14. REPLACE FUEL PUMP CONTROL ECU ASSEMBLY Replace the fuel pump control ECU assembly. Refer to «REMOVAL»(ref-507947-S18210893172012100900000) . NEXT: Go to next step
  15. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Check the fuel pump operation. OK Malfunction has been repaired successfully. NG --> See step 17 OK --> END
  16. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-507947-S16726965352012100900000) .
  17. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000) .
  18. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-507941-S41621416682012100900000) .
  19. REPLACE NO. 1 INTEGRATION RELAY (EFI MAIN RELAY). Refer to «REMOVAL»(ref-507946-S19996491392012100900000) .

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

Scheme 426

Scheme 426: PROCEDURE
Scheme 426: PROCEDURE
  1. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY) Disconnect the fuel injector assembly connectors. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E30-2 - Body ground Engine switch on (IG) 11 to 14 V E34-2 - Body ground Engine switch on (IG) 11 to 14 V E32-2 - Body ground Engine switch on (IG) 11 to 14 V E35-2 - Body ground Engine switch on (IG) 11 to 14 V E33-2 - Body ground Engine switch on (IG) 11 to 14 V E36-2 - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Fuel Injector Assembly) NG --> See step 4 OK: Go to next step
  2. INSPECT FUEL INJECTOR ASSEMBLY Inspect the fuel injector assembly. Refer to «INSPECTION»(ref-507947-S06278865442012100900000) . HINT: Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 6 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) Disconnect the fuel injector assembly connectors. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E30-1 - E26-58 (#10) Always Below 1 ohms E34-1 - E26-54 (#20) Always Below 1 ohms E32-1 - E26-57 (#30) Always Below 1 ohms E35-1 - E26-53 (#40) Always Below 1 ohms E33-1 - E26-56 (#50) Always Below 1 ohms E36-1 - E26-55 (#60) Always Below 1 ohms E30-1 or E26-58 (#10) - Body ground Always 10 kohms or higher E34-1 or E26-54 (#20) - Body ground Always 10 kohms or higher E32-1 or E26-57 (#30) - Body ground Always 10 kohms or higher E35-1 or E26-53 (#40) - Body ground Always 10 kohms or higher E33-1 or E26-56 (#50) - Body ground Always 10 kohms or higher E36-1 or E26-55 (#60) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
  4. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - FUEL INJECTOR ASSEMBLY) Disconnect the fuel injector assembly connectors. Remove the No. 1 integration relay from the engine room relay block and junction block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1A-3 - E30-2 Always Below 1 ohms 1A-3 - E34-2 Always Below 1 ohms 1A-3 - E32-2 Always Below 1 ohms 1A-3 - E35-2 Always Below 1 ohms 1A-3 - E33-2 Always Below 1 ohms 1A-3 - E36-2 Always Below 1 ohms 1A-3 or E30-2 - Body ground Always 10 kohms or higher 1A-3 or E34-2 - Body ground Always 10 kohms or higher 1A-3 or E32-2 - Body ground Always 10 kohms or higher 1A-3 or E35-2 - Body ground Always 10 kohms or higher 1A-3 or E33-2 - Body ground Always 10 kohms or higher 1A-3 or E36-2 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. INSPECT NO. 1 INTEGRATION RELAY (IG2 RELAY) Inspect the No. 1 integration relay (IG2 relay). Refer to «INSPECTION»(ref-507946-S03025636822012100900000) . NG --> See step 8 OK --> See step 9
  6. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-507947-S28604865482012100900000) .
  7. PROCEED TO NEXT SUSPECTED AREA SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-507773-S16650536182012100900000) .
  8. REPLACE NO. 1 INTEGRATION RELAY (IG2 RELAY). Refer to «REMOVAL»(ref-507946-S19996491392012100900000) .
  9. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-507941-S41621416682012100900000) .

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

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

Scheme 427

Scheme 427: PROCEDURE
Scheme 427: PROCEDURE
  1. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR INTAKE CONTROL) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for Intake Control. Check if operating noise can be heard when operating the intake air control valve assembly using the Techstream. OK Operating noise can be heard. NG --> See step 2 OK --> See step 6
  2. INSPECT INTAKE AIR SURGE TANK ASSEMBLY (INTAKE AIR CONTROL VALVE ASSEMBLY OPERATION) Inspect the intake air surge tank assembly (intake air control valve assembly). Refer to «ON-VEHICLE INSPECTION»(ref-507949-S41569026382012100900000) . NG --> See step 7 OK: Go to next step
  3. CHECK TERMINAL VOLTAGE (POWER SOURCE OF INTAKE AIR CONTROL VALVE ASSEMBLY) Disconnect the intake air control valve assembly connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E46-2 - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Intake Air Control Valve Assembly) NG --> See step 5 OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (INTAKE AIR CONTROL VALVE ASSEMBLY - ECM) Disconnect the intake air control valve assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E46-1 - E26-47 (ACIS) Always Below 1 ohms E46-1 or E26-47 (ACIS) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  5. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - INTAKE AIR CONTROL VALVE ASSEMBLY) Remove the No. 1 integration relay from the engine room relay block and junction block assembly. Disconnect the intake air control valve assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1A-8 - E46-2 Always Below 1 ohms 1A-8 or E46-2 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
  6. PROCEED TO NEXT SUSPECTED AREA SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-507773-S16650536182012100900000) .
  7. REPLACE INTAKE AIR SURGE TANK ASSEMBLY. Refer to «REMOVAL»(ref-507949-S05965159782012100900000) .
  8. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000) .
  9. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-507941-S41621416682012100900000) .

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

Scheme 428

Scheme 428: PROCEDURE
Scheme 428: PROCEDURE

Scheme 429

Scheme 429
Scheme 429
  1. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR AICS) Disconnect the vacuum hose (Port F) from the vacuum switching valve (for air intake control valve). Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for AICS. Check the operation of the vacuum switching valve (for air intake control valve) when the vacuum switching valve (for air intake control valve) is operated using the Techstream. Standard Techstream Operation Specified Condition ON Air from port E flows out through port F OFF Air from port E flows out through the air filter TEXT IN ILLUSTRATION *1 Air *2 Port E *3 Port F *4 Air Filter *a Vacuum Switching Valve is On *b Vacuum Switching Valve is Off NG --> See step 2 OK --> See step 8
  2. INSPECT VACUUM SWITCHING VALVE (FOR AIR INTAKE CONTROL VALVE) Inspect the vacuum switching valve for air intake control valve. Refer to «ON-VEHICLE INSPECTION»(ref-507953-S03889861922012100900000) . NG --> See step 9 OK: Go to next step
  3. CHECK TERMINAL VOLTAGE (POWER SOURCE OF VACUUM SWITCHING VALVE (FOR AIR INTAKE CONTROL VALVE)) Disconnect the vacuum switching valve (for air intake control valve) connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A9-1 - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Vacuum Switching Valve (for Air Intake Control Valve)) NG --> See step 7 OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE (FOR AIR INTAKE CONTROL VALVE) - ECM) Disconnect the vacuum switching valve (for air intake control valve) connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A9-2 - E26-46 (AICV) Always Below 1 ohms A9-2 or E26-46 (AICV) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. INSPECT AIR CLEANER CAP SUB-ASSEMBLY (VACUUM SURGE TANK) Inspect the vacuum surge tank. Refer to «ON-VEHICLE INSPECTION»(ref-507949-S05464115592012100900000) . NG --> REPAIR OR REPLACE AIR CLEANER CAP SUB-ASSEMBLY OK: Go to next step
  6. CHECK VACUUM HOSES (VACUUM SWITCHING VALVE (FOR AIR INTAKE CONTROL VALVE) - AIR CLEANER CAP - AIR INTAKE CONTROL VALVE) Check the vacuum hoses between vacuum switching valve (for air intake control valve), air cleaner cap sub-assembly and air intake control valve. Refer to «ON-VEHICLE INSPECTION»(ref-507948-S40072061302012100900000) . NG --> REPAIR OR REPLACE VACUUM HOSE OK --> See step 10
  7. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - VACUUM SWITCHING VALVE (FOR AIR INTAKE CONTROL VALVE)) Remove the No. 1 integration relay from the engine room relay block and junction block assembly. Disconnect the vacuum switching valve (for air intake control valve) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1C-3 - A9-1 Always Below 1 ohms 1C-3 or A9-1 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
  8. PROCEED TO NEXT SUSPECTED AREA SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-507773-S16650536182012100900000) .
  9. REPLACE VACUUM SWITCHING VALVE (FOR AIR INTAKE CONTROL VALVE). Refer to «REMOVAL»(ref-507954-S29562956922012100900000) .
  10. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000) .
  11. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-507941-S41621416682012100900000) .

Inspection Method

Example

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.

WARNINGWhen carrying out the inspection, use a place where you are able to carry it out safely and also pay close attention to your surroundings. Also, when driving make absolutely sure that all road traffic laws, such as speed limits, are observed.

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 / ACTIVE TEST»(ref-507773-S27336102882012100900000) .
  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 for circuits related to this system before performing the following inspection procedure.

Scheme 430

Scheme 430: PROCEDURE
Scheme 430: PROCEDURE
  1. CHECK THAT MIL IS ILLUMINATED Perform troubleshooting in accordance with the table below. RESULT Result Proceed to MIL remains ON A MIL does not illuminate B B --> See step 5 A: Go to next step
  2. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Check if any DTCs have been detected. Note down any DTCs. RESULT Result Proceed to DTC is not output A Any DTCs is output B HINT: Check for detected DTCs output from other ECUs which relate to the MIL. B --> REPAIR CIRCUIT INDICATED BY OUTPUT DTC A: Go to next step
  3. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the ECM connector. Turn the engine switch on (IG). Check that the MIL is not illuminated. OK MIL is not illuminated. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> See step 4 OK --> See step 8
  4. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM) Disconnect the combination meter assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition I18-22 (CHK) or A25-27 (W) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
  5. CHECK THAT MIL IS ILLUMINATED Check if the MIL is illuminated when the engine switch is turned on (IG). OK MIL should be illuminated. NG --> See step 6 OK --> See step 10
  6. CHECK THAT ENGINE STARTS 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 ASSEMBLY - ECM) Disconnect the combination meter assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition I18-22 (CHK) - A25-27 (W) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
  8. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000) .
  9. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-507938-S40578725832012100900000) .
  10. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-507773-S29925410012012100900000) .
  11. GO TO VC OUTPUT CIRCUIT. Refer to «VC Output Circuit»(ref-507941-S25061762592012100900000) .
  12. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-507938-S40578725832012100900000) .

More articles — Engine Control System (Diagnostics Codes (P1604 - U0101) & Circuit Tests) (2GR-FE)