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
| Symptom | Suspected area | Refer to |
|---|---|---|
| Engine does not crank (Does not start) | 1. Battery | ON-VEHICLE INSPECTION |
| 2. Starter | INSPECTION | |
| 3. Starter relay | ON-VEHICLE INSPECTION | |
| 4. Park/neutral position switch | For U151F, PARK / NEUTRAL POSITION SWITCH For U151E, PARK / NEUTRAL POSITION SWITCH |
|
| 5. Immobiliser system | SYSTEM DESCRIPTION | |
| No initial combustion (Does not start) | 1. ECM power source circuit | ECM POWER SOURCE CIRCUIT |
| 2. Crankshaft position sensor | CRANKSHAFT POSITION SENSOR | |
| 3. VVT sensor | VVT SENSOR | |
| 4. Ignition system | ON-VEHICLE INSPECTION | |
| 5. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| 6. ECM | ECM | |
| 7. VC output circuit | VC OUTPUT CIRCUIT | |
| Engine cranks normally but difficult to start | 1. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT |
| 2. Compression | ON-VEHICLE INSPECTION | |
| Difficult to start with cold engine | 1. Ignition system | ON-VEHICLE INSPECTION |
| 2. Spark plug | ON-VEHICLE INSPECTION | |
| 3. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| 4. Injector | FUEL INJECTOR | |
| Difficult to start with warm engine | 1. Injector | FUEL PRESSURE PULSATION DAMPER |
| 2. Ignition system | ON-VEHICLE INSPECTION | |
| 3. Spark plug | ON-VEHICLE INSPECTION | |
| 4. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| High engine idle speed | 1. Electronic throttle control system | DTC P2102; DTC P2103 |
| 2. A/C signal circuit | - | |
| 3. ECM power source circuit | ECM POWER SOURCE CIRCUIT | |
| 4. Acoustic Control Induction System (ACIS) | ACIS CONTROL CIRCUIT | |
| Low engine idle speed (Poor idling) | 1. Electronic throttle control system | DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH |
| 2. A/C signal circuit | - | |
| 3. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| 4. Air induction system | ON-VEHICLE INSPECTION | |
| 5. Acoustic Control Induction System (ACIS) | ACIS CONTROL CIRCUIT | |
| 6. PCV hose | - | |
| Rough idling | 1. Compression | ON-VEHICLE INSPECTION |
| 2. Spark plug | ON-VEHICLE INSPECTION | |
| 3. Injector | FUEL INJECTOR | |
| 4. Ignition system | ON-VEHICLE INSPECTION | |
| 5. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| 6. Electronic throttle control system | DTC P2102; DTC P2103 | |
| 7. Air induction system | ON-VEHICLE INSPECTION | |
| 8. Acoustic Control Induction System (ACIS) | ACIS CONTROL CIRCUIT | |
| 9. PCV hose | - | |
| 10. Mass air flow meter | MASS AIR FLOW METER | |
| Idle hunting | 1. Electronic throttle control system | DTC P2102; DTC P2103 |
| 2. Air induction system | ON-VEHICLE INSPECTION | |
| 3. ECM power source circuit | ECM POWER SOURCE CIRCUIT | |
| 4. Acoustic Control Induction System (ACIS) | ACIS CONTROL CIRCUIT | |
| Hesitation/Poor acceleration | 1. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT |
| 2. Spark plug | ON-VEHICLE INSPECTION | |
| 3. Ignition system | ON-VEHICLE INSPECTION | |
| 4. Injector | FUEL INJECTOR | |
| 5. Mass air flow meter | MASS AIR FLOW METER | |
| 6. Electronic throttle control system | DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH | |
| 7. Air induction system | ON-VEHICLE INSPECTION | |
| 8. Compression | ON-VEHICLE INSPECTION | |
| 9. Air Intake Control System (AICS) | AIR INTAKE CONTROL CIRCUIT | |
| Surging (Poor driveability) | 1. Spark plug | ON-VEHICLE INSPECTION |
| 2. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| 3. Ignition system | ON-VEHICLE INSPECTION | |
| 4. Injector | FUEL INJECTOR | |
| 5. Mass air flow meter | MASS AIR FLOW METER | |
| 6. Variable valve timing system | VVT SENSOR | |
| 7. Compression | ON-VEHICLE INSPECTION | |
| Engine stalls soon after starting | 1. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT |
| 2. Spark plug | ON-VEHICLE INSPECTION | |
| 3. Ignition system | ON-VEHICLE INSPECTION | |
| 4. Injector | FUEL INJECTOR | |
| 5. Variable valve timing system | VVT SENSOR | |
| 6. Electronic throttle control system | DTC P2102; DTC P2103 | |
| 7. Air induction system | ON-VEHICLE INSPECTION | |
| 8. PCV hose | - | |
| 9. Compression | ON-VEHICLE INSPECTION | |
| Engine stalls only during A/C operation | 1. A/C signal circuit | - |
| 2. ECM | ECM | |
| Unable/difficult to refuel | 1. Refueling valve (canister) | - |