NO.1 MELTING OF MAIN OR OTHER FUSES [L3 WITH TC]
MELTING OF MAIN OR OTHER FUSES REFERENCE (L3 WITH TC) 1 MELTING OF MAIN OR OTHER FUSES [TROUBLESHOOTING HINTS] Inspect condition of fuse
Scheme 23
Scheme 23: NO.1 MELTING OF MAIN OR OTHER FUSES [L3 WITH TC]
| Damaged fuse | Related wiring harness |
|---|
| MAIN | Starter Generator |
| IGN | ROOM fuse |
| ROOM | DLC-2 |
| FAN 1 | Cooling fan relay NO.1 Fan control module NO.1 |
| FAN 2 | Cooling fan relay NO.2 Fan control module NO.2 |
| IG KEY1 | Ignition switch ENGINE fuse METER fuse ENG BAR3 fuse |
| ENGINE (15 A) | Fuel pump speed control relay Fuel pump relay Condenser Ignition coil NO.1 Ignition coil NO.2 Ignition coil NO.3 Ignition coil NO.4 PCM |
| METER | Starter relay NO.2 |
| ENG BAR3 | HO2S heater |
| IG KEY2 | Ignition switch Starter relay NO.1 |
| FUEL PUMP | Fuel pump resistor Fuel pump speed control relay |
| INJ1 | Fuel injector relay PCM |
| INJ2 | PCM |
| ENGINE (30 A) | Main relay ECM fuse ENG BAR1 fuse ENG BAR2 fuse ETC fuse |
| ECM | PCM Fuel injector relay Cooling fan relay NO.1 Cooling fan relay NO.2 |
| ENG BAR1 | CV solenoid MAF/IAT sensor PCM Purge solenoid valve Wastegate control solenoid valve Variable swirl solenoid valve EGR valve CKP sensor CMP sensor |
| ENG BAR2 | A/F sensor |
| ETC | PCM |
DAMAGED FUSE REFERENCE CHART
NO.2 MIL ILLUMINATES [L3 WITH TC]
| 2 | MIL ILLUMINATES |
|---|
| DESCRIPTION | MIL is illuminated incorrectly. |
| POSSIBLE CAUSE | MIL 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.3 WILL NOT CRANK [L3 WITH TC]
| 3 | WILL NOT CRANK |
|---|
| DESCRIPTION | Starter does not work. |
| POSSIBLE CAUSE | Open starter circuit between the ignition switch and the starter Low or dead battery Charging system malfunction Starter malfunction TR switch misadjustment P/N position switch in TR switch open Seized or hydrolock engine, driveplate Immobilizer system and/or related circuit malfunction Immobilizer system operates properly (Key is not registered) Advanced keyless entry and start system malfunction |
DESCRIPTION AND POSSIBLE CAUSE
NO.4 HARD TO START/LONG CRANK/ERRATIC START/ERRATIC CRANK [L3 WITH TC]
| 4 | HARD TO START/LONG CRANK/ERRATIC START/ERRATIC CRANK |
|---|
| DESCRIPTION | Starter cranks the engine at normal speed but the engine requires excessive cranking time before starting. Battery is operating normally. |
| POSSIBLE CAUSE | Vacuum 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 A/F sensor, HO2S 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 TWC 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.5 ENGINE STALLS-AFTER START/AT IDLE [L3 WITH TC]
| 5 | ENGINE STALLS-AFTER START/AT IDLE |
|---|
| DESCRIPTION | Engine stops unexpectedly at idle or after start or both. |
| POSSIBLE CAUSE | A/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 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 A/F sensor, HO2S or related circuit malfunction ECT sensor or related circuit malfunction APP 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.6 CRANKS NORMALLY BUT WILL NOT START [L3 WITH TC]
| 6 | CRANKS NORMALLY BUT WILL NOT START |
|---|
| DESCRIPTION | Starter 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 CAUSE | Air 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 A/F sensor, HO2S or related circuit malfunction ECT sensor or related circuit malfunction APP sensor or related circuit malfunction MAF sensor or related circuit malfunction High pressure fuel pump malfunction Exhaust system or 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 fuel delivery pipe) 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.7 SLOW RETURN TO IDLE [L3 WITH TC]
| 7 | SLOW RETURN TO IDLE |
|---|
| DESCRIPTION | Engine takes more time than normal to return to idle speed. Engine speed continues at fast idle after warm-up. |
| POSSIBLE CAUSE | ECT sensor or related circuit malfunction Thermostat is stuck open Fuel injection timing is incorrect Erratic signal from CKP sensor Erratic signal from CMP sensor APP 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 Injector driver circuit (built-in PCM) 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.8 ENGINE RUNS ROUGH/ROLLING IDLE [L3 WITH TC]
| 8 | ENGINE RUNS ROUGH/ROLLING IDLE |
|---|
| DESCRIPTION | Engine speed fluctuates between the specified idle speed and lower speed, and engine shakes excessively. Idle speed is too slow and the engine shakes excessively. |
| POSSIBLE CAUSE | Air 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 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 MAP sensor or related circuit malfunction APP 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.9 FAST IDLE/RUNS ON [L3 WITH TC]
| 9 | FAST IDLE/RUNS ON |
|---|
| DESCRIPTION | Engine speed continues at fast idle after warm-up. Engine runs after the ignition switch is turned off. |
| POSSIBLE CAUSE | ECT 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 APP 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.10 LOW IDLE/STALLS DURING DECELERATION [L3 WITH TC]
| 10 | LOW IDLE/STALLS DURING DECELERATION |
|---|
| DESCRIPTION | Engine stops unexpectedly at beginning of deceleration or recovery from deceleration. |
| POSSIBLE CAUSE | Poor 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 APP sensor or related circuit malfunction TP sensor or related circuit malfunction MAF sensor or related circuit malfunction A/F sensor, HO2S or related circuit malfunction Brake switch or related circuit malfunction TR switch 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.11 ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/JERK, HESITATION/STUMBLE, SURGES [L3 WITH TC]
| 11 | ENGINE STALLS/QUITS (ACCELERATION/CRUISE) ENGINE RUNS ROUGH (ACCELERATION/CRUISE) MISSES (ACCELERATION/CRUISE) BUCK/JERK (ACCELERATION/CRUISE/DECELERATION) HESITATION/STUMBLE (ACCELERATION) SURGES (ACCELERATION/CRUISE) |
|---|
| DESCRIPTION | Engine stops unexpectedly at beginning of acceleration or during acceleration. Engine stops unexpectedly while cruising. Engine speed fluctuates during acceleration or cruising. Engine misses during acceleration or cruising. Vehicle bucks/jerks during acceleration, cruising, or deceleration. Momentary pause at beginning of acceleration or during acceleration. Momentary minor irregularity in engine output. |
| 11 | ENGINE STALLS/QUITS (ACCELERATION/CRUISE) ENGINE RUNS ROUGH (ACCELERATION/CRUISE) MISSES (ACCELERATION/CRUISE) BUCK/JERK (ACCELERATION/CRUISE/DECELERATION) HESITATION/STUMBLE (ACCELERATION) SURGES (ACCELERATION/CRUISE) |
| POSSIBLE CAUSE | A/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 TWC 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 A/F sensor, HO2S or related circuit malfunction APP sensor or related circuit malfunction MAF sensor or related circuit malfunction ECT sensor or related circuit malfunction MAP sensor or related circuit malfunction IAT sensor or related circuit malfunction Boost air temperature sensor or related circuit malfunction Intermittent open or short circuit MAF sensor, APP sensor, TP sensor and VSS ATX 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.12 LACK/LOSS OF POWER-ACCELERATION/CRUISE [L3 WITH TC]
| 12 | LACK/LOSS OF POWER-ACCELERATION/CRUISE |
|---|
| DESCRIPTION | Performance is poor under load (e.g., power down when climbing hills). |
| POSSIBLE CAUSE | Improper 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 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 MAP sensor or related circuit malfunction APP sensor or related circuit malfunction MAF/IAT sensor or related circuit malfunction Boost air temperature sensor or related circuit malfunction Intermittent open or short circuit MAF sensor, APP sensor, TP sensor and VSS ATX 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.13 KNOCKING/PINGING [L3 WITH TC]
| 13 | KNOCKING/PINGING |
|---|
| DESCRIPTION | Sound is produced when air/fuel mixture is ignited by something other than a spark plug (e.g., hot spot in the combustion chamber). |
| POSSIBLE CAUSE | Poor 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 or related circuit malfunction Boost air temperature sensor or related circuit malfunction Incorrect fuel injection timing or amount Fuel injector malfunction KS or related circuit malfunction Ignition system malfunction Erratic signal from CMP sensor Inadequate engine compression Inadequate fuel pressure (high-pressure side) MAP sensor or related malfunction Wastegate valve malfunction (stuck closed) Charge air cooler malfunction Fuel pressure sensor or related circuit malfunction APP sensor or related circuit malfunction Suction control valve malfunction (built-in high pressure fuel pump) Exhaust system and/or 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.14 POOR FUEL ECONOMY [L3 WITH TC]
| 14 | POOR FUEL ECONOMY |
|---|
| DESCRIPTION | Fuel economy is unsatisfactory. |
| POSSIBLE CAUSE | Contaminated air cleaner element Engine cooling system malfunction Improper ATF level 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 MAP sensor or related circuit malfunction APP sensor or related circuit malfunction MAF sensor or related circuit malfunction Contaminated MAF sensor IAT sensor or related circuit malfunction Boost air temperature sensor 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 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 TWC 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.15 EMISSION COMPLIANCE [L3 WITH TC]
| 15 | EMISSION COMPLIANCE |
|---|
| DESCRIPTION | Fails emissions test. |
| POSSIBLE CAUSE | Poor 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 TWC 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 A/F sensor, HO2S or related circuit malfunction ECT sensor or related circuit malfunction MAF sensor or related circuit malfunction IAT sensor or related circuit malfunction Boost air temperature sensor or related circuit malfunction Fuel pressure sensor or related circuit malfunction APP sensor or related circuit malfunction TP sensor or related circuit malfunction MAP sensor or related circuit malfunction VSS or related circuit malfunction Fuel line restriction High pressure fuel pump malfunction Fuel injector or related circuit malfunction Incorrect fuel injection timing 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.16 HIGH OIL CONSUMPTION/LEAKAGE [L3 WITH TC]
| 16 | HIGH OIL CONSUMPTION/LEAKAGE |
|---|
| DESCRIPTION | Oil consumption is excessive. |
| POSSIBLE CAUSE | Improper dipstick Improper engine oil viscosity PCV valve malfunction Engine internal parts malfunction Seal leakage at the compressor or turbine end of turbocharger (indicated by oil in housing on wheel) Oil leakage |
DESCRIPTION AND POSSIBLE CAUSE
NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [L3 WITH TC]
| 17 | COOLING SYSTEM CONCERNS-OVERHEATING |
|---|
| DESCRIPTION | Engine runs at higher than normal temperature/overheats. |
| POSSIBLE CAUSE | Improper 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 |
DESCRIPTION AND POSSIBLE CAUSE
NO.18 COOLING SYSTEM CONCERNS-RUNS COLD [L3 WITH TC]
| 18 | COOLING SYSTEM CONCERNS-RUNS COLD |
|---|
| DESCRIPTION | Engine does not reach normal operating temperature. |
| POSSIBLE CAUSE | Thermostat malfunction Condenser fan system malfunction Cooling fan system malfunction |
DESCRIPTION AND POSSIBLE CAUSE
NO.19 EXHAUST SMOKE [L3 WITH TC]
| 19 | EXHAUST SMOKE |
|---|
| DESCRIPTION | Blue, black, or white smoke from exhaust system. |
| POSSIBLE CAUSE | Blue 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) [L3 WITH TC]
| 20 | FUEL ODOR (IN ENGINE COMPARTMENT) |
|---|
| DESCRIPTION | Gasoline fuel smell or visible leakage. |
| POSSIBLE CAUSE | Excessive 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO. 23 A/C DOES NOT WORK SUFFICIENTLY [L3 WITH TC]
| 23 | A/C DOES NOT WORK SUFFICIENTLY |
|---|
| DESCRIPTION | A/C compressor magnetic clutch does not engage when A/C is turned on. |
| POSSIBLE CAUSE | Improper 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 sensor 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 sensor and the A/C amplifier |
DESCRIPTION AND POSSIBLE CAUSE
NO. 24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [L3 WITH TC]
| 24 | A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY |
|---|
| DESCRIPTION | A/C compressor magnetic clutch does not disengage. |
| POSSIBLE CAUSE | A/C compressor magnetic clutch engagement is stuck A/C relay is stuck closed Short to ground in wiring harness between A/C switch and PCM Short to ground in wiring harness between A/C relay and PCM A/C relay to magnetic clutch circuit shorted to battery power |
DESCRIPTION AND POSSIBLE CAUSE
NO. 25 A/C IS NOT CUT OFF UNDER WIDE OPEN THROTTLE CONDITIONS [L3 WITH TC]
| 25 | A/C IS NOT CUT OFF UNDER WIDE OPEN THROTTLE CONDITIONS |
|---|
| DESCRIPTION | A/C compressor magnetic clutch does not disengage under WOT. |
| POSSIBLE CAUSE | APP sensor malfunction Loosely installed APP sensor |
DESCRIPTION AND POSSIBLE CAUSE
NO.26 EXHAUST SULPHUR SMELL [L3 WITH TC]
| 26 | EXHAUST SULPHUR SMELL |
|---|
| DESCRIPTION | Rotten egg smell (sulphur) from exhaust. |
| POSSIBLE CAUSE | Electrical 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.28 FUEL FILLING SHUT OFF CONCERNS [L3 WITH TC]
| 28 | FUEL FILLING SHUT OFF CONCERNS |
|---|
| DESCRIPTION | Fuel does not shut off properly. |
| POSSIBLE CAUSE | Clogged 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
NO.29 SPARK PLUG CONDITION [L3 WITH TC]
| 29 | SPARK PLUG CONDITION |
|---|
| DESCRIPTION | Incorrect spark plug condition. |
| POSSIBLE CAUSE | NOTE: 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" 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. |
DESCRIPTION AND POSSIBLE CAUSE
Water Sprinkling Method
If a malfunction occurs only during high humidity or rainy/snowy weather, perform the following steps
| CAUTION | Indirectly 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 24
- Connect the M-MDS to the DLC-2 if you are inspecting sensors or switches.
- Turn the ignition switch to the ON position (engine off). NOTE: If the engine starts and runs, perform the following steps is idling.
- Access the PIDs for the sensor or the switch if you are inspecting sensors or switches.
- If you are inspecting the switch, turn it on manually.
- 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
- Find an unusual signal. (See «FINDING UNUSUAL SIGNALS»(ref-375325-S00510596352010102800000) .)
- Locate the source. (See «LOCATING THE SOURCE OF UNUSUAL SIGNALS»(ref-375325-S19864206772010102800000) .)
- Repair or replace the defective part.
- Confirm that the unusual signal has been erased.
Finding unusual signals
While referring to 01-02A-8 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.
- Start the engine and idle the vehicle. You can assume that any signals that are out of specification by a wide margin are unusual.
- 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
| CAUTION | Compare the M-MDS 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 25
Scheme 25: Investigate the input signal system for thermistor type
- 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 is loose. Coupler (pin holder) damage Pin discoloration (blackness) Wiring harness/pin crimp is loose or disconnected.
- 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
- 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.
Both cooling fans do not operate
- Open circuit between the fan control module and the cooling fan relay
- Open circuit between fan control module and ground
- Poor connection of the fan control module connector
- Fan control module (See «FAN CONTROL MODULE INSPECTION [L3 WITH TC]»(ref-375332-S32282189202010102800000) .) Cooling fan motor NO.1 does not operate
- Open or short to ground circuit between the fan control module NO.1 and cooling fan motor NO.1
- Poor connection of the fan control module NO.1 connector or cooling fan motor NO.1 connector
- Cooling fan motor NO.1 (See «FAN MOTOR INSPECTION [L3 WITH TC]»(ref-375332-S16204354382010102800000) .)
- Fan control module NO.1 (See «FAN CONTROL MODULE INSPECTION [L3 WITH TC]»(ref-375332-S32282189202010102800000) .)
Cooling fan motor NO.2 does not operate
- Open or short to ground circuit between the fan control module NO.2 and the cooling fan motor NO.2
- Poor connection of the fan control module NO.2 connector or the cooling fan motor NO.2 connector
- Cooling fan motor NO.2 (See «FAN MOTOR INSPECTION [L3 WITH TC]»(ref-375332-S16204354382010102800000) .)
- Fan control module NO.2 (See «FAN CONTROL MODULE INSPECTION [L3 WITH TC]»(ref-375332-S32282189202010102800000) .)
![Scheme 23: NO.1 MELTING OF MAIN OR OTHER FUSES [L3 WITH TC]](https://i.diagnostdata.com/repair/e9/e94a47a1b460608921012393df5811cdbb1bd3f889afbeb45260ee8cc7901e46.webp)
