Problem Symptoms Table
PROBLEM SYMPTOMS CHART
| Symptom | Suspected area | See |
|---|---|---|
| Engine does not crank (does not start) | 1. Cranking holding function circuit | CRANKING HOLDING FUNCTION CIRCUIT |
| 2. Starter | STARTER | |
| 3. Starter relay | STARTER RELAY | |
| 4. VC output circuit | VC OUTPUT CIRCUIT | |
| No initial combustion (does not start) | 1. ECM power source circuit | ECM POWER SOURCE CIRCUIT |
| 2. VC output circuit | VC OUTPUT CIRCUIT | |
| 3. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| 4. ECM | ECM | |
| No complete combustion (does not start) | 1. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT |
| Difficult to start (engine cranks normally) | 1. Starter signal circuit | DTC P0617 STARTER RELAY CIRCUIT HIGH |
| 2. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| 3. Compression | ENGINE | |
| Difficult to start (with cold engine) | 1. Starter signal circuit | DTC P0617 STARTER RELAY CIRCUIT HIGH |
| 2. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Difficult to start (with hot engine) | 1. Starter signal circuit | DTC P0617 STARTER RELAY CIRCUIT HIGH |
| 2. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| High engine idle speed (poor idling) | 1. A/C signal circuit (compressor circuit) | COMPRESSOR CIRCUIT |
| 2. ECM power source circuit | ECM POWER SOURCE CIRCUIT | |
| Low engine idle speed (poor idling) | 1. A/C signal circuit (compressor circuit) | COMPRESSOR CIRCUIT |
| 2. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Rough idling (poor idling) | 1. Compression | ENGINE |
| 2. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| 3. Mass air flow meter | MASS AIR FLOW METER | |
| Hunting (poor idling) | 1. ECM power source circuit | ECM POWER SOURCE CIRCUIT |
| 2. A/T faulty (2WD) | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 3. A/T faulty (4WD) | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Hesitation/Poor acceleration (Poor driveability) | 1. ECM power source circuit | ECM POWER SOURCE CIRCUIT |
| 2. A/T faulty (2WD) | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 3. A/T faulty (4WD) | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 4. Mass air flow meter | MASS AIR FLOW METER | |
| Engine stalls during A/C operation | 1. A/C signal circuit (compressor circuit) | COMPRESSOR CIRCUIT |
| 2. ECM | ECM | |
| Unable/Difficult to refuel | 1. ORVR system | - |
| Surging (Poor driveability) | 1. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT |
| 2. Mass air flow meter | MASS AIR FLOW METER | |
| Engine stalls soon after starting | 1. Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT |