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Symptom Troubleshooting - Engine - (L3 with TC): Other Mazda 3 BL

Testing & Diagnostics 5 illustrations ~4345 words

NO.2 MIL ILLUMINATES [L3 WITH TC]

2MIL ILLUMINATES
DESCRIPTIONMIL illuminates incorrectly.
POSSIBLE CAUSEPCM illuminates for emission-related concern (DTC is stored in PCM) Instrument cluster malfunction NOTE: If the MIL blinks at a steady rate, a misfire condition could possibly exist.
NOTE
If the MIL blinks at a steady rate, a misfire condition could possibly exist.

MIL ILLUMINATES [L3 WITH TC]

NO.3 WILL NOT CRANK [L3 WITH TC]

3WILL NOT CRANK
DESCRIPTIONStarter does not work.
POSSIBLE CAUSEOpen starter circuit between the ignition switch and the starter Low or dead battery Charging system malfunction Starter interlock switch malfunction Starter malfunction Seized/hydro-locked engine, flywheel Immobilizer system and/or related circuit malfunction Immobilizer system operates properly (Key is not registered.)

WILL NOT CRANK [L3 WITH TC]

NO.4 HARD TO START/LONG CRANK/ERRATIC START/ERRATIC CRANK [L3 WITH TC]

4HARD TO START/LONG CRANK/ERRATIC START/ERRATIC CRANK
DESCRIPTIONStarter cranks the engine at normal speed but the engine requires excessive cranking time before starting. Battery is operating normally
POSSIBLE CAUSEVacuum leakage Poor fuel quality Starting system malfunction Erratic signal to ignition coils Spark plug malfunction Air leakage from intake-air system Improper air/fuel mixture ratio control Incorrect fuel injection timing Erratic signal from CKP sensor Erratic signal from CMP sensor Front and/rear HO2S sensor or related circuit malfunction ECT sensor or related circuit malfunction MAF sensor or related circuit malfunction Intake-air system restriction Improper operation of electronic throttle control system PCV valve malfunction Inadequate fuel pressure (high or low pressure side) Relief valve malfunction (built-in delivery pipe) Spill valve control solenoid valve malfunction (built-in high pressure fuel pump) Fuel filter clogging Fuel line restriction Fuel leakage Fuel pump (low-side) resister or related circuit malfunction Fuel injector malfunction Fuel pressure sensor malfunction High pressure fuel pump malfunction Exhaust system or three-way catalytic converter restriction EGR valve malfunction Purge solenoid valve malfunction Low engine compression Improper valve timing WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

HARD TO START/LONG CRANK/ERRATIC START/ERRATIC CRANK [L3 WITH TC] DESCRIPTION REFERENCE

NO.5 ENGINE STALLS-AFTER START/AT IDLE [L3 WITH TC]

5ENGINE STALLS-AFTER START/AT IDLE
DESCRIPTIONEngine stops unexpectedly.
POSSIBLE CAUSEA/C system improper operation Air leakage from intake-air system Purge solenoid valve malfunction Improper operation of electronic throttle control system EGR valve malfunction Vacuum leakage Engine overheating Low engine compression Ignition system malfunction Poor fuel quality PCV valve malfunction Intake-air system restriction Exhaust system and/or three-way catalytic converter (TWC) restriction or clogging Electrical connector disconnection Open or short circuit in the fuel pump (low-side) body or related wiring harness Fuel pump resister or related circuit malfunction No battery power supply to PCM or poor ground Inadequate fuel pressure (high or low pressure side) Fuel pressure sensor or related circuit malfunction Spill valve control solenoid valve malfunction (built-in high pressure fuel pump) Relief valve malfunction (built-in delivery pipe) Fuel pump (low-side) body mechanical malfunction Fuel leakage Fuel line restriction Fuel filter clogging Incorrect fuel injection timing High pressure fuel pump malfunction Fuel injector malfunction Ignition coil malfunction Improper air/fuel mixture ratio control No signal from CKP sensor due to sensor, related wiring harness or wrong installation Erratic signal from CMP sensor Front and/or rear HO2S sensor or related circuit malfunction ECT sensor or related circuit malfunction Accelerator positions sensor or related circuit malfunction MAF sensor or related circuit malfunction Improper valve timing Improper operation variable valve timing control system Immobilizer system and/or circuit malfunction WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

ENGINE STALLS-AFTER START/AT IDLE [L3 WITH TC] DESCRIPTION REFERENCE

NO.6 CRANKS NORMALLY BUT WILL NOT START [L3 WITH TC]

6CRANKS NORMALLY BUT NOT START
DESCRIPTIONStarter cranks engine at normal speed but engine will not run. Refer to symptom troubleshooting " NO.5 ENGINE STALLS " if this symptom appears after the engine stalls. Fuel is in tank. Battery is in normal condition.
POSSIBLE CAUSEAir leakage from intake-air system Open PCM ground or vehicle body ground Improper operation of electronic throttle control system EGR valve malfunction Low engine compression Engine overheating Vacuum leakage Ignition system malfunction Poor fuel quality PCV valve malfunction Intake-air system restriction Improper air/fuel mixture ratio control No signal from CKP sensor due to sensor, related wire or incorrect installation No signal from CMP sensor due to sensor, related wire or incorrect installation Front and/or rear HO2S sensor or related circuit malfunction ECT sensor or related circuit malfunction Accelerator position sensor or related circuit malfunction MAF sensor or related circuit malfunction High pressure fuel pump malfunction Exhaust system or three-way catalytic converter (TWC) malfunction Disconnected electrical connector Open or short in fuel pump (low-side) body and related harness Inadequate fuel pressure (high or low pressure side) Fuel pressure sensor or related circuit malfunction Relief valve malfunction (built-in high pressure fuel pump) Fuel line clogging or restriction Incorrect fuel injection timing Fuel pump resistor or control relay malfunction Fuel pump (low-side) mechanical malfunction Fuel leakage Fuel injector malfunction Purge solenoid valve malfunction Spark plug malfunction Ignition coil malfunction Improper valve timing Improper variable valve timing control system operation Immobilizer system or related circuit malfunction WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

CRANKS NORMALLY BUT WILL NOT START [L3 WITH TC] DESCRIPTION REFERENCE

NO.7 SLOW RETURN TO IDLE [L3 WITH TC]

7SLOW RETURN TO IDLE
DESCRIPTIONEngine takes more time than normal to return to idle speed. Engine speed continues at fast idle after warm-up
POSSIBLE CAUSEECT sensor or related circuit malfunction Thermostat is stuck open Fuel injection timing is incorrect Erratic signal from CKP sensor Erratic signal from CMP sensor Accelerator position sensor or related circuit malfunction Air suction in intake-air system MAF sensor or related circuit malfunction Fuel pressure sensor or related circuit malfunction Excessive fuel pressure Relief valve malfunction (built-in delivery pipe) Fuel injector malfunction Cooling fan control system malfunction Improper load signal input WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

SLOW RETURN TO IDLE [L3 WITH TC] DESCRIPTION REFERENCE

NO.8 ENGINE RUNS ROUGH/ROLLING IDLE [L3 WITH TC]

8ENGINE RUNS ROUGH/ROLLING IDLE
DESCRIPTIONEngine speed fluctuates the specified idle speed and lower speed and, engine shakes excessively. Idle speed is too slow and the engine shakes excessively.
POSSIBLE CAUSEAir leakage from intake-air system A/C system improper operation Erratic signal to ignition coil Spark plug malfunction Purge solenoid valve malfunction Improper operation of electronic throttle control system EGR valve malfunction Low engine compression or excessive unbalance for each cylinder Improper valve timing Improper variable valve timing control system Poor fuel quality PCV valve malfunction Intake-air system restriction Exhaust system or three-way catalytic converter (TWC) restriction or clogging Disconnected electrical connectors Inadequate fuel pressure (high or low pressure side) Fuel pressure sensor or related circuit malfunction Spill valve control solenoid valve malfunction (built-in high pressure fuel pump) Relief valve malfunction (built-in delivery pipe) Fuel pump (low-side) body mechanical malfunction Fuel filter restriction or clogging Fuel leakage Incorrect fuel injection timing Unbalanced fuel injection amount for each cylinder High pressure fuel pump malfunction Fuel injector malfunction Erratic signal from CKP sensor Erratic or no signal from CMP sensor ECT sensor or related circuit malfunction Manifold absolute pressure (MAP) sensor or related circuit malfunction Accelerator position sensor or related circuit malfunction MAF sensor malfunction Incorrect or no load signal input Engine overheating Vacuum leakage WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

ENGINE RUNS ROUGH/ROLLING IDLE [L3 WITH TC] DESCRIPTION REFERENCE

NO.9 FAST IDLE/RUNS ON [L3 WITH TC]

9FAST IDLE/RUNS ON
DESCRIPTIONEngine speed continues at fast idle after warm-up. Engine runs after the ignition switch is turned off.
POSSIBLE CAUSEECT sensor or related circuit malfunction Suction control valve (built-in high pressure fuel pump) Fuel injector malfunction Air leakage from intake-air system Throttle body malfunction Accelerator pedal position sensor or related circuit malfunction Cruise control system operation improperly Improper load signal input Improper operation of electric throttle control system WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

FAST IDLE/RUNS ON [L3 WITH TC] DESCRIPTION REFERENCE

NO.10 LOW IDLE/STALLS DURING DECELERATION [L3 WITH TC]

10LOW IDLE/STALLS DURING DECELERATION
DESCRIPTIONEngine stops unexpectedly at beginning of deceleration or recovery from deceleration.
POSSIBLE CAUSEPoor fuel quality Vacuum leakage Improper operation of electronic throttle control system Air leakage from intake-air system Intake-air system restriction EVAP control system malfunction Improper air/fuel mixture ratio control Erratic signal from CKP sensor Erratic signal from CMP sensor Accelerator position sensor or related circuit malfunction TP sensor or related circuit malfunction MAF sensor or related circuit malfunction Front and/or rear HO2S sensor or related circuit malfunction Brake switch or related circuit malfunction Neutral or clutch switch malfunction or related circuit malfunction Improper A/C magnetic clutch operation Inadequate fuel pressure (high or low pressure side) Suction control valve malfunction (built-in high pressure fuel pump) Relief valve malfunction (built-in delivery pipe) Fuel leakage Fuel line restriction Fuel filter clogging Incorrect fuel injection timing High pressure fuel pump malfunction Fuel injector malfunction Low engine compression Improper valve timing EGR system malfunction Vacuum leakage ECT sensor or related circuit malfunction Fuel pressure sensor or related circuit malfunction WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

LOW IDLE/STALLS DURING DECELERATION [L3 WITH TC] DESCRIPTION REFERENCE

NO.11 ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/JERK, HESITATION/STUMBLE, SURGES [L3 WITH TC]

11ENGINE STALLS/QUITS-ACCELERATION/CRUISE ENGINE RUNS ROUGH-ACCELERATION/CRUISE BUCK/JERK-ACCELERATION/CRUISE/DECELERATION HESITATION/STUMBLE-ACCELERATION SURGES-ACCELERATION/CRUISE
DESCRIPTIONEngine stops unexpectedly at beginning of acceleration or during cruise. Engine stops unexpectedly while cruising. Engine speed fluctuates during acceleration or cruising. Engine misses during acceleration or cruising. Vehicle bucks/jerks during acceleration, during or deceleration. Momentary pause at beginning of acceleration or during acceleration Momentary minor irregularity in engine output
POSSIBLE CAUSEA/C system improper operation Air leakage from intake-air system Intake-air system restriction Purge solenoid valve malfunction Improper operation of electronic throttle control system EGR system malfunction Low engine compression Turbocharger malfunction Improper operation of wastegate control system Vacuum leakage Poor fuel quality Main relay intermittent malfunction Throttle body malfunction Engine overheating Spark plug malfunction Variable swirl system malfunction Air cleaner restriction PCV valve malfunction Improper valve timing due to jumping out timing chain Exhaust system and/or three-way catalytic converter restriction Intermittent open or short circuit in fuel pump circuit Incorrect fuel injection timing Inadequate fuel pressure (high or low pressure side) Fuel pressure sensor or related circuit malfunction Suction control valve malfunction (built-in high pressure fuel pump) Relief valve malfunction (built-in delivery pipe) High pressure fuel pump malfunction Fuel injector malfunction Improper fuel pump speed control operation Fuel pump mechanical malfunction Fuel line restriction or clogging Improper air/fuel mixture ratio control operation Erratic or no signal from CMP sensor Erratic signal from CKP sensor Front and/or rear HO2S sensor or related circuit malfunction Accelerator position sensor or related circuit malfunction MAF sensor or related circuit malfunction Neutral switch or related circuit malfunction ECT sensor or related circuit malfunction Manifold absolute pressure (MAP) sensor or related circuit malfunction IAT sensor No.1 or related circuit malfunction IAT sensor No.2 or related circuit malfunction Intermittent open or short circuit MAF sensor, accelerator position sensor, TP sensor and VSS Clutch slippage WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/JERK, HESITATION/STUMBLE, SURGES [L3 WITH TC] DESCRIPTION REFERENCE

NO.12 LACK/LOSS OF POWER (ACCELERATION/CRUISE)[L3 WITH TC]

12LACK/LOSS OF POWER - ACCELERATION/CRUISE
DESCRIPTIONPerformance is poor under load (e.g., powers down when climbing hills).
POSSIBLE CAUSEImproper A/C system operation Improper operation of A/C cut-off control Air leakage or restriction from intake-air system Loose turbocharger compressor-to-intake manifold duct connecting Turbocharger rotating assembly binding or dragging Wastegate valve malfunction (stuck open) Turbocharger malfunction Charge air cooler malfunction Variable swirl system malfunction Improper operation of electronic throttle control system Purge solenoid valve malfunction EGR system malfunction Brake dragging Low engine compression Poor fuel quality Vacuum leakage Incorrect signal to ignition coil Spark plug malfunction Engine overheating Throttle body malfunction Air cleaner restriction or dirty PCV valve malfunction Improper valve timing due to jumping out of timing chain Improper operation of variable valve timing control system Restriction in exhaust system or three-way catalytic converter (TWC) Leakage at exhaust manifold or turbocharger mounting flange Intermittent open or short fuel pump related circuit Inadequate fuel pressure (high-or low pressure side) Fuel pressure sensor or related circuit malfunction Suction control valve or related circuit malfunction (built-in high pressure fuel pump) Relief valve malfunction (built-in delivery pipe) High pressure fuel pump malfunction Improper fuel pump speed control operation Fuel pump mechanical malfunction Fuel line restriction or clogging Fuel injector malfunction Incorrect fuel injection timing Erratic signal from CKP sensor Erratic or no signal from CMP sensor ECT sensor or related circuit malfunction Manifold absolute pressure (MAP) sensor or related circuit malfunction Accelerator position sensor or related circuit malfunction MAF/IAT sensor or related circuit malfunction IAT sensor No.2 or related circuit malfunction Intermittent open or short circuit MAF sensor, accelerator position sensor, TP sensor and VSS Clutch slippage WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

LACK/LOSS OF POWER (ACCELERATION/CRUISE)[L3 WITH TC] DESCRIPTION REFERENCE

NO.13 KNOCKING/PINGING [L3 WITH TC]

13KNOCKING/PINGING
DESCRIPTIONSound is produced when air/fuel mixture is ignited by something other than a spark plug (e.g., hot spot in the combustion chamber).
POSSIBLE CAUSEPoor fuel quality Engine overheating due to cooling system malfunction Variable swirl valve stuck closed Improper operation of electronic throttle system Air leakage or restriction from intake-air system ECT sensor or related circuit malfunction MAF sensor or related circuit malfunction IAT sensor No.1 or related circuit malfunction IAT sensor No.2 or related circuit malfunction Incorrect fuel injection timing or amount Fuel injector malfunction Knock sensor or related circuit malfunction Ignition system malfunction Erratic signal from CMP sensor Inadequate engine compression Inadequate fuel pressure (high-pressure side) Manifold absolute pressure (MAP) sensor or related malfunction Wastegate valve malfunction (stuck closed) Charge air cooler malfunction Fuel pressure sensor or related circuit malfunction Accelerator position sensor or related circuit malfunction Suction control valve malfunction (built-in high pressure fuel pump) Exhaust system and/or three-way catalytic converter (TWC) restriction EGR system malfunction WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

KNOCKING/PINGING [L3 WITH TC] DESCRIPTION REFERENCE

NO.14 POOR FUEL ECONOMY [L3 WITH TC]

14POOR FUEL ECONOMY
DESCRIPTIONFuel economy is unsatisfactory.
POSSIBLE CAUSEContaminated air cleaner element Engine cooling system malfunction Weak spark Spark plug malfunction Poor fuel quality Erratic signal from CKP sensor Erratic or no signal from CMP sensor Fuel pressure sensor or related circuit malfunction ECT sensor or related circuit malfunction Manifold absolute pressure (MAP) sensor or related circuit malfunction Accelerator position sensor or related circuit malfunction MAF sensor or related circuit malfunction Contaminated MAF sensor IAT sensor No.1 or related circuit malfunction IAT sensor No.2 or related circuit malfunction VSS or related circuit malfunction Variable swirl system malfunction Improper coolant level Inadequate fuel pressure (high-pressure side) Injection timing is incorrect Fuel injector or related circuit malfunction High pressure fuel pump malfunction Fuel leakage Fuel line restriction Fuel filter clogging PCV valve malfunction Brake dragging Clutch slippage A/C system improper operation Improper valve timing due to jumping out of timing chain Improper engine compression Turbocharger malfunction Charge air cooler malfunction Exhaust system and/or three-way catalytic converter clogging EGR system malfunction Vacuum leakage WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

POOR FUEL ECONOMY [L3 WITH TC] DESCRIPTION REFERENCE

NO.15 EMISSION COMPLIANCE [L3 WITH TC]

15EMISSION COMPLIANCE
DESCRIPTIONFails emissions test.
POSSIBLE CAUSEPoor fuel quality Vacuum lines leakage or blockage Cooling system malfunction Engine overheating Spark plug malfunction Air leakage from intake-air system Variable swirl system malfunction Wastegate control system improper operation Turbocharger malfunction Charge air cooler malfunction Inadequate fuel pressure (high-pressure side) PCV valve malfunction or incorrect valve installation EGR system malfunction Exhaust system and/or three-way catalytic converter restriction Fuel tank ventilation system malfunction Charcoal canister damage Air cleaner element clogging or restriction Throttle body malfunction Improper operation of electronic throttle control system Relief valve malfunction (built-in delivery pipe) Suction control valve malfunction (built-in high pressure fuel pump) Improper air/fuel mixture ratio control operation Erratic or no signal from CMP sensor Erratic signal from CKP sensor Front or rear HO2S or related circuit malfunction ECT or related circuit malfunction MAF sensor or related circuit malfunction IAT sensor No.1 or related circuit malfunction IAT sensor No.2 or related circuit malfunction Fuel pressure sensor or related circuit malfunction Accelerator position sensor or related circuit malfunction TP sensor or related circuit malfunction Manifold absolute pressure (MAP) sensor or related circuit malfunction Neutral or clutch switch malfunction VSS or related circuit malfunction Fuel line restriction High pressure fuel pump malfunction Fuel injector or related circuit malfunction Incorrect fuel injection timing Three-way catalytic converter (TWC) malfunction Engine internal parts malfunction Excessive carbon is built-up in combustion chamber Improper engine compression Improper valve timing WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

EMISSION COMPLIANCE [L3 WITH TC] DESCRIPTION REFERENCE

NO.16 HIGH OIL CONSUMPTION/LEAKAGE [L3 WITH TC]

16HIGH OIL CONSUMPTION/LEAKAGE
DESCRIPTIONOil consumption is excessive.
POSSIBLE CAUSEPCV valve malfunction Improper dipstick Improper engine oil viscosity Engine internal parts malfunction Seal leakage at the compressor or turbine end of turbocharger (indicated by oil in housing on wheel) Oil leakage

HIGH OIL CONSUMPTION/LEAKAGE [L3 WITH TC] DESCRIPTION REFERENCE

NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [L3 WITH TC]

17COOLING SYSTEM CONCERNS-OVERHEATING
DESCRIPTIONEngine runs at higher than normal temperature/overheats.
POSSIBLE CAUSEImproper coolant level Blown fuse Coolant leakage (engine internal, turbocharger, external) Excessive A/C system pressure A/C system operation is improper Improper water/anti-freeze mixture Fans reverse rotation Poor radiator condition Thermostat malfunction Radiator hose damage Cooling fan inoperative Condenser fan inoperative Improper or damaged radiator cap Coolant overflow system malfunction Improper drive belt tension Drive belt damage

COOLING SYSTEM CONCERNS-OVERHEATING [L3 WITH TC] DESCRIPTION REFERENCE

NO.18 COOLING SYSTEM CONCERNS-RUNS COLD [L3 WITH TC]

18COOLING SYSTEM CONCERNS-RUNS COLD
DESCRIPTIONEngine takes excessive time to reach normal operating temperature.
POSSIBLE CAUSEThermostat malfunction Condenser fan system malfunction Cooling fan system malfunction

COOLING SYSTEM CONCERNS-RUNS COLD [L3 WITH TC] DESCRIPTION REFERENCE

NO.19 EXHAUST SMOKE [L3 WITH TC]

19EXHAUST SMOKE
DESCRIPTIONBlue, black, or smoke from the exhaust system
POSSIBLE CAUSEBlue smoke (Burning oil): PCV valve malfunction Engine internal oil leakage Oil leakage at the compressor or turbine end of the turbocharger White smoke (Water in combustion): Cooling system malfunction (coolant loss) Engine internal coolant leakage Coolant leakage at the compressor or the turbine end of the turbocharger Black smoke (Rich fuel mixture): Air cleaner restriction Intake-air system is collapsed or restricted Leakage at engine intake or exhaust manifold Wastegate valve malfunction (stuck open) Excessive fuel pressure Improper engine compression Ignition system malfunction Improper fuel injection timing and amount WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

EXCESSIVE BLACK SMOKE [L3 WITH TC] DESCRIPTION REFERENCE

NO.20 FUEL ODOR (IN ENGINE COMPARTMENT)[L3 WITH TC]

20FUEL ODOR (IN ENGINE COMPARTMENT)
DESCRIPTIONGasoline fuel smell or visible leakage
POSSIBLE CAUSEExcessive fuel pressure Purge solenoid valve malfunction Fuel system vent system blockage Evaporative gas leakage Improper connection of evaporative related vacuum hoses Charcoal canister malfunction Fuel leakage from fuel system WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

FUEL ODOR (IN ENGINE COMPARTMENT)[L3 WITH TC] DESCRIPTION REFERENCE

NO.23 A/C DOES NOT WORK SUFFICIENTLY [L3 WITH TC]

23A/C DOES NOT WORK SUFFICIENTLY.
DESCRIPTIONA/C compressor magnetic clutch does not engage when A/C switch is turned on.
POSSIBLE CAUSEImproper refrigerant charging amount Open A/C magnetic clutch Open circuit between the A/C relay and the A/C magnetic clutch Poor ground of A/C magnetic clutch Refrigerant pressure switch is stuck open. A/C relay is stuck open. Seized A/C compressor Open circuit between the A/C switch and the PCM through both the refrigerant pressure switch and the A/C amplifier

A/C DOES NOT WORK SUFFICIENTLY [L3 WITH TC] DESCRIPTION REFERENCE

NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [L3 WITH TC]

24A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY.
DESCRIPTIONA/C compressor magnetic clutch does not disengage.
POSSIBLE CAUSEA/C compressor magnetic clutch engagement is stuck. A/C relay is stuck closed. Short to ground between A/C switch and PCM Short to ground circuit between A/C relay and PCM A/C relay to magnetic clutch circuit shorted to battery power

A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [L3 WITH TC] DESCRIPTION REFERENCE

NO.25 A/C DOES NOT CUT OFF UNDER WIDE OPEN THROTTLE CONDITIONS [L3 WITH TC]

25A/C IS NOT CUT OFF UNDER WOT CONDITIONS.
DESCRIPTIONA/C compressor magnetic clutch does not disengage under WOT.
POSSIBLE CAUSEAccelerator position sensor malfunction Loosely installed accelerator position sensor.

A/C DOES NOT CUT OFF UNDER WIDE OPEN THROTTLE CONDITIONS [L3 WITH TC] DESCRIPTION REFERENCE

NO.26 EXHAUST SULPHUR SMELL [L3 WITH TC]

26EXHAUST SULPHUR SMELL
DESCRIPTIONRotten egg smell (sulphur) from exhaust
POSSIBLE CAUSEElectrical connectors are disconnected or connected poorly Charcoal canister malfunction Vacuum lines are disconnected or connected improperly. Improper fuel pressure Poor fuel quality WARNING: The following troubleshooting flow chart contains fuel system diagnosis and repair procedures. Read following warnings before servicing fuel system: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains fuel system diagnosis and repair procedures. Read following warnings before servicing fuel system: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

EXHAUST SULPHUR SMELL [L3 WITH TC] DESCRIPTION REFERENCE

NO.28 FUEL FILLING SHUT OFF ISSUES [L3 WITH TC]

28Fuel filling shut off issues
DESCRIPTIONFuel does not shut off properly.
POSSIBLE CAUSEClogged EVAP pipes Nonreturn valve malfunction Fuel shut-off valve malfunction Fuel nozzle malfunction Fuel nozzle is not inserted correctly. WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before servicing the fuel system: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before servicing the fuel system: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

FUEL FILLING SHUT OFF ISSUES [L3 WITH TC] DESCRIPTION REFERENCE

NO.29 SPARK PLUG CONDITION [L3 WITH TC]

29SPARK PLUG CONDITION
DESCRIPTIONIncorrect spark plug condition
POSSIBLE CAUSENOTE: Inspecting the condition of the spark plugs can determine whether a problem is related to a specific cylinder or possibly all cylinders. Wet/carbon stuck on specific plug: Spark-Weak, not visible Air/fuel mixture-Excessive fuel injection volume Compression-No compression, low compression Malfunctioning spark plug Grayish white with specific plug: Air/fuel mixture-Insufficient fuel injection volume Malfunctioning spark plug Wet/carbon is stuck on all plugs: Spark-Spark weak Air/fuel mixture-Too rich Compression-Low compression Clogging in intake/exhaust system Grayish white with all plugs: Air/fuel mixture-Too lean WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before servicing the fuel system: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .) CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
NOTE
Inspecting the condition of the spark plugs can determine whether a problem is related to a specific cylinder or possibly all cylinders.
WARNING
The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before servicing the fuel system: Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE SERVICE PRECAUTION [L3 WITH TC] .) (See AFTER SERVICE PRECAUTION [L3 WITH TC] .)
CAUTION
Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

SPARK PLUG CONDITION [L3 WITH TC] DESCRIPTION REFERENCE

Water Sprinkling Method

If a malfunction occurs only during high humidity or rainy/snowy weather, perform the following steps

CAUTIONIndirectly change the temperature and humidity by spraying water onto the front of the radiator. If a vehicle is subject to water leakage, the leakage may damage the control module. When testing a vehicle with a water leakage problem, special caution must be used.

Scheme 44

Scheme 44
Scheme 44
  1. Connect the M-MDS to the DLC-2 if you are inspecting sensors or switches.
  2. Turn the ignition switch to the ON position (Engine off). NOTE: If the engine starts and runs, perform the following steps is idling.
  3. Access the PIDs for the sensor or the switch if you are inspecting sensors or switches.
  4. If you are inspecting the switch, turn it on manually.
  5. Spray water onto the vehicle or run it through a car wash. If the PID value is unstable or a malfunction occurs, repair or replace parts if necessary.

Input Signal System Investigation Procedure

  1. Find an unusual signal. (See «FINDING UNUSUAL SIGNALS»(ref-345236-S22821507922009102000000) ).
  2. Locate the source. (See «LOCATING THE SOURCE OF UNUSUAL SIGNALS»(ref-345236-S32156753032009102000000) ).
  3. Repair or replace the defective part.
  4. Confirm that the unusual signal has been erased.

Finding unusual signals

While referring to ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] , use the PID/DATA monitor and record function to inspect the input signal system relating to the problem.

  1. Start the engine and idle the vehicle. You can assume that any signals that are out of specification by a wide margin are unusual.
  2. When recreating the problem, any sudden change in the monitor input signals that is not consciously created by the driver can be determined as unusual.

Locating the source of unusual signals

CAUTIONCompare the M-MOS monitor voltage with the measurement voltage using the digital measurement system function. If you use another tester, a misreading may occur. When measuring the voltage, attach the tester ground to the ground of the PCM that is being tested, or to the engine itself. If this is not done, the measured voltage and actual voltage may differ After connecting the pin to a waterproof coupler, confirm continuity and measure the voltage, and inspect the waterproof connector for cracks. If there are any, use sealant to fix them. Failure to do this may result in deterioration of the wiring harness or terminal from water damage, leading to problems with the vehicle.

Scheme 45

Scheme 45: Variable resistance type 1 (TP sensor and EGR boost sensor)
Scheme 45: Variable resistance type 1 (TP sensor and EGR boost sensor)

Investigate the input signal system for variable resistance type 1

  1. When an unusual signal is received, measure the #1 PCM terminal voltage. If the #1 terminal voltage and the M-MDS monitor voltage are the same, proceed to the next step. If there is a difference of 0.5 V or more, inspect for the following points concerning the PCM connector: Female terminal opening is loose. Coupler (pin holder) damage Pin discoloration (blackness) Wiring harness/pin crimp is loose or disconnected.
  2. Measure the #2 sensor terminal voltage. If there is a 0.5 V or more difference between the sensor and M-MDS voltages, inspect the wiring harness for open or short circuits. If the sensor and M-MDS voltages are the same, inspect for the following points concerning the sensor connector: Female terminal opening is loose. Coupler (pin holder) damage Pin discoloration (blackness) If there are no problems, proceed to next investigation below.

Investigate the standard power supply system for variable resistance type 1

  1. Confirm that the #3 terminal is at 5 V. If the measured voltage on the #3 terminal is 5 V, inspect the following points on the sensor connector. If there is no problem, inspect for the following: Female terminal opening loose Coupler (pin holder) damage Pin discoloration (blackness) If the #3 terminal measures other than 5 V , inspect for the following: Open or short circuit in wiring harness Wiring harness/pin crimp is loose or disconnected.

Investigate the ground system for variable resistance type 1

  1. Confirm that terminal sensor #5 is at 0 V . If it is at 0 V , inspect the sensor. If necessary, replace the sensor. If not, inspect for the following: Open or short circuit in wiring harness Female terminal opening is loose causing an open or short circuit in wiring harness Coupler (pin holder) damage Pin discoloration (blackness) Wiring harness/pin crimp is loose or disconnected.

Scheme 46

Scheme 46: Variable resistance type 2 (fuel tank level sensor and mass air flow (MAF) sensor)
Scheme 46: Variable resistance type 2 (fuel tank level sensor and mass air flow (MAF) sensor)

Investigate the ground system for variable resistance type 2

  1. Confirm that terminal sensor #4 is at 0 V. If it is at 0 V , inspect the sensor. If necessary, replace the sensor. If not at 0 V , inspect for the following: Open circuit in wiring harness Female terminal opening is loose. Coupler (pin holder) damage Pin discoloration (blackness) Wiring harness/pin crimp is loose or disconnected.

Investigate the input signal system for variable resistance type 2

  1. When an unusual signal is received, measure the #1 PCM terminal voltage. If the #1 terminal voltage and the M-MDS monitor voltage are the same, proceed to the next step. If there is a difference of 0.5 V or more , inspect for the following points concerning the PCM connector: Female terminal opening is loose. Coupler (pin holder) damage Pin discoloration (blackness) Wiring harness/pin crimp is loose or disconnected.
  2. Measure the #2 sensor terminal voltage. If there is a 0.5 V or more difference between the sensor and M-MDS voltages, inspect the wiring harness for open or short circuits. If the sensor and M-MDS voltages are the same, inspect the following points concerning the sensor connector: Female terminal opening is loose. Coupler (pin holder) damage Pin discoloration (blackness) Wiring harness/pin crimp is loose or disconnected. If there are no problems, proceed to next investigation below.

Investigate the electrical supply system for variable resistance type 2

  1. Confirm that the sensor #3 terminal is B+ . If the measured voltage on the #3 terminal is B+ , inspect the following points on the sensor connector. If there is no problem, inspect for the following: Female terminal opening is loose. Coupler (pin holder) damage Pin discoloration (blackness) If the #3 terminal measures other than B+ , inspect the following: Open or short circuit in wiring harness Wiring harness/pin crimp is loose or disconnected.

Scheme 47

Scheme 47: Thermistor type (IAT sensor and ECT sensor)
Scheme 47: Thermistor type (IAT sensor and ECT sensor)

Investigate the input signal system for thermistor type

  1. When an unusual signal is received, measure the #1 PCM terminal voltage. If the #1 terminal voltage and the M-MDS monitor voltage are the same, proceed to the next step. If there is a difference of 0.5 V or more , inspect the following points concerning the PCM connector: Female terminal opening loose Coupler (pin holder) damage Pin discoloration (blackness) Wiring harness/pin crimp is loose or disconnected.
  2. Measure the #2 sensor terminal voltage. If there is a 0.5 V or more difference between the sensor and M-MDS voltages, inspect the wiring harness for open or short circuits. If the sensor and M-MDS voltages are the same, inspect the following points concerning the sensor connector: Female terminal opening is loose. Coupler (pin holder) damage Pin discoloration (blackness) Wiring harness/pin crimp is loose or disconnected. If there are no problems, proceed to next investigation below.

Investigate the ground system for thermistor type

  1. Confirm that terminal sensor #3 is at 0 V . If it is at 0 V , inspect the sensor. If necessary, replace the sensor. If not, inspect for the following: Open circuit in wiring harness Female terminal opening is loose. Coupler (pin holder) damage Pin discoloration (blackness) Wiring harness/pin crimp is loose or disconnected.

VSS

Scheme 48

Scheme 48
Scheme 48
  1. Measure the #1 PCM terminal voltage and confirm that it is at 0 V or 5 V when the ignition switch to the ON position and the engine is idling. If it is at 0 V or 5 V, intermittent concern exists. (See «INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC]»(ref-345236-S08648693872009102000000) ). If not, inspect the following points concerning the PCM connector. If there is no problem, inspect for the following: Female terminal opening is loose. Coupler (pin holder) damage Pin discoloration (blackness) Wiring harness/pin crimp is loose or disconnected.
  2. Measure the #2 sensor terminal voltage and confirm that it is at 0 V or 5 V when the ignition switch to the ON position and the engine is idling. If it is at 0 V or 5 V , intermittent concern exists. (See «INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC]»(ref-345236-S08648693872009102000000) ). If not, inspect the following points concerning the sensor connector: If there is no problem, inspect for the following. Female terminal opening is loose. Coupler (pin holder) damage Pin discoloration (blackness) Wiring harness/pin crimp is loose or disconnected.
  3. Confirm that the #3 terminal switch voltage is at 0 V . If it is at 0 V , inspect the sensor. If necessary, replace the sensor. If necessary, replace the sensor. If not, inspect for the following: Open circuit in wiring harness Female terminal opening is loose. Coupler (pin holder) damage Pin discoloration (blackness) Wiring harness/pin crimp is loose or disconnected.

If simulation function of M-MDS is used

  1. Turn the ignition switch to the ON position. (Engine off)
  2. Turn the variable swirl solenoid valve from off to on using the IMRC PID and verify that the operation sound of the solenoid valve is heard. If the operation sound is not heard, replace the variable swirl solenoid valve. If the operation sound is not heard, inspect the following: Vacuum hose and vacuum chamber for looseness or damage Shutter valve actuator Check valve is stuck open or closed Shutter valve cannot move smoothly

If simulation function of M-MDS is not used

  1. Inspect variable swirl solenoid valve. (See «VARIABLE SWIRL SOLENOID VALVE INSPECTION [L3 WITH TC]»(ref-345225-S12041098102009102000000) .) If the variable swirl solenoid valve is not normal, replace the variable swirl solenoid valve. If the variable swirl solenoid valve is normal, inspect the following: Vacuum hose and vacuum chamber for looseness or damage Shutter valve actuator (See «VARIABLE SWIRL SHUTTER VALVE ACTUATOR INSPECTION [L3 WITH TC]»(ref-345225-S02689006312009102000000) .) Check valve is stuck open or closed Shutter valve cannot move smoothly
STEPINSPECTIONACTION
1Start the engine and warm it up until normal operating temperature. Connect the M-MDS to DLC-2. Select the INJ#1, INJ#2, INJ#3, and INJ#4 PIDs. Turn the fuel injector from on to off using the PIDs for each cylinder. Does the engine speed drop?YesFuel injector work properly
NoEngine speed does not drop an any cylinder: Go to the next steps. Engine speed drops on some cylinders: Go to step 3.
2Perform the Main Relay Operation Inspection. (See MAIN RELAY OPERATION INSPECTION ). Does the main relay work properly?YesGo to the next step.
NoRepair or replace the malfunctioning parts.
3Inspect the fuel injector of the suspected cylinder. Is the fuel injector normal?YesInspect the following for the suspected cylinder. Fuel injector power and/or ground systems related wiring harness and connectors. If all items normal replace the PCM. (See PCM REMOVAL/INSTALLATION [L3 WITH TC] .)
NoReplace the fuel injector.
4Perform KOER self-test function using the M-MDS. (See KOEO/KOER SELF TEST [L3 WITH TC] .) Are DTCs P0201, P0202, P0203 and/or P0204 present?YesGo to the appropriate DTC test. (See DTC TABLE [L3 WITH TC] .)
NoGo to the next step.
5Inspect the fuel injector of the suspected cylinder. Is the fuel injector normal?YesInspect the following for the suspected cylinder: PCM terminals (pulled-out pins, corrosion) Injector driver module terminals (pulled-out pins, corrosion) Fuel injector terminals (pulled-out pins, corrosion) If all items are normal replace the PCM. (See PCM REMOVAL/INSTALLATION [L3 WITH TC] .)
NoReplace the fuel injector.

OPERATION OF FUEL INJECTOR INSPECTION

If simulation function of M-MOS is not used

STEPINSPECTIONACTION
1Perform the KOER self-test function using the M-MDS. (See KOEO/KOER SELF TEST [L3 WITH TC] .) Are DTCs P0201, P0202, P0203 and/or P0204 present?YesGo to appropriate DTC test. (See DTC TABLE [L3 WITH TC] .)
NoGo to the next step.
2Inspect the fuel injector for each cylinder. Is the fuel injector normal?YesGo to the next step.
NoReplace the fuel injector.
3Inspect the following for the suspected cylinder: Fuel injector power and/or ground system related wiring harnesses and connectors. PCM terminals (pulled-out pins, corrosion) Fuel injector terminals (pulled-out pins, corrosion) Are all items normal?YesInspect PCM terminal voltage of fuel injector signal
NoRepair or replace malfunctioning parts.

OPERATION OF FUEL INJECTOR INSPECTION

  1. Warm up the engine and idle it.
  2. Connect the M-MDS to the DLC-2.
  3. Select the RPM and the FUELPW1 PIDs.
  4. Monitor both PIDs while performing the following steps. Depress the accelerator pedal and increase the RPM PID to 4,000 rpm. Quickly release the accelerator pedal (brake pedal is not depressed) and verify that the FUELPW1 PID is 0 msec , and 2-5 msec , when the RPM PID drops below 1,200 rpm . If not as specified, inspect the following. ECT sensor and related wiring harness (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [L3 WITH TC]»(ref-345229-S15058237682009102000000) .) Neutral switch and related wiring harness (See «NEUTRAL SWITCH INSPECTION [L3 WITH TC]»(ref-345229-S06779418572009102000000) .) Clutch switch and related wiring harness (See «CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION [L3 WITH TC]»(ref-345229-S37868350592009102000000) .)
  1. Warm up the engine and idle it.
  2. Measure the fuel injector control signal wave profile using the oscilloscope while performing the following steps. Depress the accelerator pedal and increase the engine speed to 4,000 rpm. Quickly release the accelerator pedal (brake pedal is not depressed) and verify that the wave profile constant B+ , and the wave appears when the engine speed drops below 1,200 rpm. (See «PCM INSPECTION [L3 WITH TC]»(ref-345229-S19000659942009102000000) .) If not as specified, inspect the following. ECT sensor and related wiring harness (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [L3 WITH TC]»(ref-345229-S15058237682009102000000) .) Neutral switch and related wiring harness (See «NEUTRAL SWITCH INSPECTION [L3 WITH TC]»(ref-345229-S06779418572009102000000) .) Clutch switch and related wiring harness (See «CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION [L3 WITH TC]»(ref-345229-S37868350592009102000000) .)
  1. Connect the M-MDS to the DLC-2.
  2. Remove the fuel-filler cap.
  3. Turn the ignition switch to the ON position.
  4. Turn the fuel pump relay from off to on using the FP PID and inspect if the operation sound of the fuel pump is heard. If no operation sound is heard, proceed to the next step.
  5. Measure the voltage at the wiring harness side fuel pump connector terminal B with the FIP PID turned on. If the voltage is as specified, inspect the following: Fuel pump continuity Fuel pump ground Wiring harness between the fuel pump relay and PCM terminal 1H If not as specified, inspect the following: Fuel pump relay Fuel pump speed control relay Wiring harness connector (Main relay-fuel pump relay-fuel pump resister-fuel pump.) Specification 8.0-11.5 V (Ignition switch at ON)
CAUTIONConnecting the wrong check connector terminal may possibly cause a malfunction. Carefully connect the specified terminal only.
  1. Short the check connector terminal F/P to body ground using a jumper wire.
  2. Remove the fuel-filler cap.
  3. Turn the ignition switch to the ON position.
  4. Verify that the fuel pump operation sound is heard. If no operation sound is heard, proceed to the next step.
  5. Measure the voltage at wiring harness side fuel pump connector terminal B. If the voltage is as specified, inspect the following: Fuel pump continuity Fuel pump ground Wiring harness between the fuel pump relay and PCM terminal, 1H If not as specified, inspect the following: Fuel pump relay Fuel pump speed control relay Wiring harness connector (Main relay - fuel pump relay - fuel pump resister - fuel pump.) Specification 8.0-11.5 V (Ignition switch at on)
  1. Connect the M-MDS to the DLC-2.
  2. Turn the ignition switch to the ON position.
  3. Select the FP PID.
  4. Turn the fuel pump relay from off to on and inspect if the operation sound of the fuel pump relay is heard. If no operation sound is heard, inspect the fuel pump relay. If the fuel pump relay is normal, inspect the following: Wiring harness and connectors (Main relay - fuel pump relay - PCM terminal 1H)
  1. Crank the engine and verify that the fuel pump relay operation sound is heard.
  2. If the operation sound is not heard, inspect the following: Fuel pump relay Wiring harness and connectors (Main relay - fuel pump relay - PCM terminal 1H)
  1. Perform the Fuel Pump Operation Inspection.
  2. Remove the fuel-filler cap.
  3. Crank the engine and inspect if the sound frequency of the fuel pump is higher than during idling. If it cannot be verified, inspect the following: Fuel pump resister Wiring harness and connectors (open circuit at fuel pump speed control relay terminal C - fuel pump relay terminal D)
  1. Crank the engine and verify that the EGR valve operation (initial operation) sound is heard. If the operation sound is not heard, connect the M-MDS to the DLC-2 and verify that the DTC P0403 is shown. Perform the DTC inspection. (See «DTC TABLE [L3 WITH TC]»(ref-345283-S18459666242009102000000) .)
  2. Start the engine run it is idling.
  3. Increase the step value of the EGR valve from 0 to 40 using the SEGR PID of the simulation function.
  4. Operate the EGR valve and inspect if the engine speed becomes unstable or the engine stalls. If the engine speed does not change, proceed to the following. Stop the engine. Remove the EGR valve. Connect the EGR valve connector. Turn the ignition switch to the ON position. Increase the step value of EGR valve from 0 to 40 using SEGRP PID. Verify that the EGR valve operates according to the SEGRP PID. If the EGR valve is operated, clean the EGR valve and the EGR gas passage. If the EGR valve does not operate, replace the EGR valve.
  5. Start the engine and warm it up completely.
  6. Access the following PIDs. ECT, RPM, SEGRP, APP1, APP2, TP_REL, VSS
  7. Idle the vehicle and verify that the SEGRP value is 0.
  8. Put the vehicle in drive.
  9. Depress the accelerator pedal and verify that the SEGRP value increases. If the SEGRP value does not increase, inspect the VSS, TP and ECT PIDs. (See «PCM INSPECTION [L3 WITH TC]»(ref-345229-S19000659942009102000000) .)
  10. Stop the vehicle and verify that the SEGRP value is returns to 0.
  1. Verify that EGR valve operation (initial operation) sound is heard when the ignition switch is turned to the ON position. If the operation sound is not heard, connect the M-MDS to the DLC-2 and verify that the DTC P0403 is shown. Perform the DTC inspection. (See «DTC TABLE [L3 WITH TC]»(ref-345283-S18459666242009102000000) .)
  2. Start the engine and idle it.
  3. Warm up the engine to normal operating temperature.
  4. Select the following PIDs: ECT, RPM, SEGRP, APP1, APP2, TP_REL, VSS
  5. Let the vehicle idle and verify that the SEGRP value is 0.
  6. Put the vehicle in drive.
  7. Depress the accelerator pedal and verify that the SEGRP value is increased. If the EGR valve increases, inspect the following: EGR valve (stuck open or closed) Wiring harness and connectors (Main relay - EGR valve - PCM) If the SEGRP value does not increase, inspect the VSS, APP1, APP2, TP_REL and ECT PIDs. (See «PCM INSPECTION [L3 WITH TC]»(ref-345229-S19000659942009102000000) .)
  8. Stop the vehicle and verify that the SEGRP value returns to 0.
  1. Start the engine.
  2. Disconnect the vacuum hose between the purge solenoid valve and the charcoal canister.
  3. Put a finger to the purge solenoid valve and verify that there is no vacuum applied when the engine is cold. If there is a vacuum, inspect the following: Wiring harness and connectors (Purge solenoid valve - PCM terminal 2AB) Purge solenoid valve (stuck open)
  4. Connect the M-MDS to the DLC-2 and verify that the DTC P0403 is displayed. Perform the DTC inspection. (See «DTC TABLE [L3 WITH TC]»(ref-345283-S18459666242009102000000) .)
  5. Select the EVAPCP PID.
  6. Increase the duty value of the purge solenoid valve to 50% and inspect if the operation sound of the valve is heard. If the operation sound is heard, inspect for loose or damaged vacuum hoses. (Intake manifold - purge solenoid valve - charcoal canister) If the operation sound is not heard, perform the purge solenoid valve inspection.
  7. Warm up the engine to normal operating temperature.
  8. Monitor the EVAPCP PID using the M-MDS, and drive the vehicle approx. 2000 rpm for 30 s or more. If the EVAPCP PID is 0% , inspect the following. MAF, APP1, APP2, TP_REL and LOAD PIDs.
  1. Start the engine.
  2. Disconnect the vacuum hose between the purge solenoid valve and the charcoal canister.
  3. Put a finger to the purge solenoid valve and verify that there is no vacuum applied when the engine is cold. If there is vacuum, inspect the following: Wiring harness and connectors (Purge solenoid valve-PCM terminal, 2AB) Purge solenoid valve
  4. Warm up the engine to the normal operating temperature.
  5. Stop the engine.
  6. Connect the M-MDS to the DLC-2 and verify that the DTC P0443 is shown. Perform DTC inspection. (See «DTC TABLE [L3 WITH TC]»(ref-345283-S18459666242009102000000) .)
  7. Turn the ignition switch to the ON position.
  8. Select the ECT PID.
  9. Verify that the engine coolant temperature is above 60°C {140°F} . If the M-MDS indicates that the temperature is below 60°C {140°F} , perform the ECT sensor inspection.
  10. Set the vehicle on the dynamometer or chassis roller. WARNING: When the dynamometer or chassis roller is operating, there is a possibility that the operator may come into contact with or be caught up in the rotating parts, leading to serious injuries or death. When performing work while the dynamometer or chassis roller is operating, be careful not to contact or be caught up in any of the rotating parts.
  11. Drive vehicle at an engine speed to approx. 2000 rpm for 30 s or more.
  12. Put a finger to the purge solenoid valve and verify that there is no vacuum applied during Step 2 . If there is no vacuum, inspect the following: Wiring harness and connector (Main relay - purge solenoid valve - PCM terminal 2AB) Purge solenoid valve MAF, APP1, APP2, TP_REL and LOAD PIDs If there is vacuum, inspect the following: Vacuum hose (Purge solenoid valve - charcoal canister)
  1. Start the engine and run it is idling.
  2. Disconnect the hose between the wastegate control solenoid valve and the intake pipe.
  3. Put a finger to the wastegate control solenoid valve and verify that there is no pressure applied. If there is pressure, inspect the following: Wiring harness and connectors (Wastegate control solenoid valve-PCM terminal 2AA) Wastegate control solenoid valve (Stuck open)
  4. Warm up the engine to normal operating temperature.
  5. Connect the M-MDS to the DLC-2 and verify that DTC P0245 or P0246 are shown. Perform the DTC inspection. (See «DTC P0245 [L3 WITH TC]»(ref-345283-S33473476122009102000000) .) (See «DTC P0246 [L3 WITH TC]»(ref-345283-S23701135332009102000000) .)
  6. Select the VGT PID.
  7. Increase the duty value of the wastegate control solenoid valve and inspect if the operation sound of the solenoid valve is heard. If the operation sound is heard, inspect for loose or damaged vacuum hoses. (Wastegate actuator - wastegate control solenoid valve - intake hose) If the operation sound is not heard, perform the wastegate control solenoid valve inspection.
  8. Warm up the engine to normal operating temperature.
  9. Monitor the VGT and APP PIDs using the M-MDS.
  10. Run the engine with the APP PID above 30% and verify that the VGT PID value increases from 0% . If the VGT PID is 0% , inspect the APP PID.
  1. Start the engine and run it is idling.
  2. Disconnect the hose between the wastegate control solenoid valve and the intake pipe.
  3. Put a finger to the wastegate control solenoid valve and verify that there is no pressure applied. If there is pressure, inspect the following: Wiring harness and connectors (Wastegate control solenoid valve - PCM terminal 2AA) Wastegate control solenoid valve (Stuck open)
  4. Warm up the engine to normal operating temperature.
  5. Connect the M-MDS to the DLC-2 and verify that the DTC P0245 or P0246 are shown. Perform the DTC inspection. (See «DTC P0245 [L3 WITH TC]»(ref-345283-S33473476122009102000000) .) (See «DTC P0246 [L3 WITH TC]»(ref-345283-S23701135332009102000000) .)
  6. Warm up the engine to normal operating temperature.
  7. Monitor the VGT and APP PIDs using the M-MDS.
  8. The hose between the wastegate control solenoid valve and intake pipe is disconnected.
  9. Run the engine with the APP PID above 30% and verify that the VGT PID value increases from 0% and there is pressure applied. If the VGT PID is 0% , inspect the TP_REL PID. If there is no pressure applied, inspect for the following: Wastegate control solenoid valve (Stuck closed) Hose connection (Intake hose (turbocharger compressor downstream side) - wastegate actuator - intake hose (turbocharger compressor upstream side)

When idling cannot be continued

  1. Remove the oil control valve (OCV) and verify that the spool valve is at maximum retard position.
  2. Connect the oil control valve (OCV).
  3. Turn the ignition switch to the ON position.
  4. Verify that the spool valve is at the maximum retard position. If the spool valve is stuck in the advance direction, inspect for the following: Short circuit in wiring harnesses or connectors between the oil control valve (OCV) and the PCM.
  5. Inspect the variable timing actuator.
  1. Warm up the engine to normal operating temperature.
  2. Connect the M-MDS to the DLC-2.
  3. Start the engine and run it is idling.
  4. Select the VT DUTY1 PID.
  5. Increase the oil control valve (OCV) duty value and verify that the engine idles roughly or stalls. If as specified, inspect the timing belt component (valve timing deviation). If not as specified, go to the next step.
  6. Remove the oil control valve (OCV) while the connector is connected.
  7. Turn the ignition switch to the ON position.
  8. Select VT DUTY1 PID.
  9. Increase the oil control valve (OCV) duty value and verify that the spool valve operates in the advance direction. If as specified, inspect the following hydraulic passage for clogging and/or leakage. Oil pressure switch - oil control valve (OCV) Oil control valve (OCV) - camshaft Camshaft internal passage If not as specified, inspect the following: Oil control valve (OCV) operation Harness and connectors for open or short circuit (Oil control valve (OCV) - PCM terminal 2AF)
  10. If they are normal, replace the intake camshaft pulley (with a built-in variable valve timing actuator).
  1. Disconnect the oil control valve (OCV) connector.
  2. Warm up the engine and idle it.
  3. Apply battery voltage to the oil control valve (OCV) and verify that the engine idles roughly or stalls. If the engine idles roughly or stalls, inspect the timing belt component (valve timing deviation). If the engine does not idle roughly or stalls, go to the next step.
  4. Remove the oil control valve (OCV) and perform the spool valve operation inspection. If not as specified, inspect the following: Oil control valve (OCV) Harnesses and connectors between oil control valve (OCV) and PCM have an open or short circuit. If as specified, inspect the following hydraulic passages for clogging or leakage or both: Oil pressure switch - oil control valve (OCV) Oil control valve (OCV) - camshaft Camshaft internal passage
  5. If they are normal, replace the camshaft pulley (with built-in variable valve timing actuator).

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