Problem Symptoms Table
HINT:
Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
PROBLEM SYMPTOMS REFERENCE
| Symptom | Suspected area | See |
|---|---|---|
| Engine does not crank (Does not start) | 1. Battery | CHARGING (2GR-FE) |
| 2. Starter | STARTING (2GR-FE) | |
| 3. Starter relay | STARTING (2GR-FE) | |
| 4. Park/neutral position switch | U140F AUTOMATIC TRANSAXLE | |
| 5. Immobilizer system | ENGINE IMMOBILIZER | |
| No initial combustion (Does not start) | 1. ECM power source circuit | SFI SYSTEM |
| 2. Crankshaft position sensor | ECM POWER SOURCE CIRCUIT | |
| 3. VVT sensor | DESCRIPTION | |
| 4. Ignition system | IGNITION (2GR-FE) | |
| 5. Fuel pump control circuit | WIRING DIAGRAM | |
| 6. ECM | INSPECTION PROCEDURE | |
| 7. VC output circuit | VC OUTPUT CIRCUIT | |
| Engine cranks normally but difficult to start | 1. Fuel pump control circuit | DESCRIPTION |
| 2. Compression | ENGINE MECHANICAL (2GR-FE) | |
| Difficult to start with cold engine | 1. Ignition system | IGNITION (2GR-FE) |
| 2. Spark plug | IGNITION COIL | |
| 3. Fuel pump control circuit | WIRING DIAGRAM | |
| 4. Injector | FUEL INJECTOR | |
| Difficult to start with warm engine | 1. Injector | FUEL INJECTOR |
| 2. Ignition system | IGNITION SYSTEM | |
| 3. Spark plug | IGNITION COIL | |
| 4. Fuel pump control circuit | INSPECTION PROCEDURE | |
| High engine idle speed | 1. Electronic throttle control system | FUEL PUMP CONTROL CIRCUIT |
| 2, A/C signal circuit | - | |
| 3. ECM power source circuit | DESCRIPTION | |
| 4. Acoustic Control Induction System (ACIS) | WIRING DIAGRAM | |
| Low engine idle speed (Poor idling) | 1. Electronic throttle control system | INSPECTION PROCEDURE |
| 2. A/C signal circuit | - | |
| 3. Fuel pump control circuit | ACIS CONTROL CIRCUIT | |
| 4. Air induction system | INTAKE SYSTEM | |
| 5. Acoustic Control Induction System (ACIS) | DESCRIPTION | |
| 6. PCV hose | - | |
| Rough idling | 1. Compression | ENGINE MECHANICAL (2GR-FE) |
| 2. Spark plug | IGNITION COIL | |
| 3. Injector | FUEL INJECTOR | |
| 4. Ignition system | IGNITION SYSTEM | |
| 5. Fuel pump control circuit | WIRING DIAGRAM | |
| 6. Electronic throttle control system | INSPECTION PROCEDURE | |
| 7. Air induction system | INTAKE SYSTEM | |
| 8. Acoustic Control Induction System (ACIS) | AIR INTAKE CONTROL CIRCUIT | |
| 9. PCV hose | - | |
| 10. Mass air flow meter | DESCRIPTION | |
| Idle hunting | 1. Electronic throttle control system | WIRING DIAGRAM |
| 2. Air induction system | INTAKE SYSTEM | |
| 3. ECM power source circuit | INSPECTION PROCEDURE | |
| 4. Acoustic Control Induction System (ACIS) | MIL CIRCUIT | |
| Hesitation/Poor acceleration | 1. Fuel pump control circuit | DESCRIPTION |
| 2. Spark plug | IGNITION COIL | |
| 3. Injector | FUEL INJECTOR | |
| 4. Ignition system | IGNITION SYSTEM | |
| 5. Mass air flow meter | WIRING DIAGRAM | |
| 6. Electronic throttle control system | INSPECTION PROCEDURE | |
| 7. Air induction system | INTAKE SYSTEM | |
| 8. Compression | ENGINE MECHANICAL (2GR-FE) | |
| 9. Air Intake Control System (AICS) | MASS AIR FLOW METER | |
| Surging (Poor driveability) | 1. Spark plug | IGNITION COIL |
| 2. Fuel pump control circuit | COMPONENTS | |
| 3. Ignition system | IGNITION SYSTEM | |
| 4. Injector | FUEL INJECTOR | |
| 5. Mass air flow meter | ON-VEHICLE INSPECTION | |
| 6. Variable valve timing system | REMOVAL | |
| 7. Compression | ENGINE MECHANICAL (2GR-FE) | |
| Engine stalls soon after starting | 1. Fuel pump control circuit | INSTALLATION |
| 2. Spark plug | IGNITION COIL | |
| 3. Injector | FUEL INJECTOR | |
| 4. Ignition system | IGNITION SYSTEM | |
| 5. Variable valve timing system | CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY | |
| 6. Electronic throttle control system | COMPONENTS | |
| 7. Air induction system | INTAKE SYSTEM | |
| 8. PCV hose | - | |
| 9. Compression | ENGINE MECHANICAL (2GR-FE) | |
| Engine stalls only during A/C operation | 1. A/C signal circuit | - |
| 2. ECM | ON-VEHICLE INSPECTION | |
| Unable/difficult to refuel | 1. Refueling valve (canister) | - |