| Engine will not start (MIL works OK, no DTCs set) |
- Test the battery (see
BATTERY TEST
).
- Test the starter (see STARTER PERFORMANCE TEST
).
- Check the fuel pressure (see
FUEL PRESSURE TEST
).
- Troubleshoot the fuel pump circuit (see FUEL PUMP CIRCUIT TROUBLESHOOTING
).
|
- Low compression
- No ignition spark
- Intake air leaks
- Locked up engine
- Broken cam chain
- Contaminated fuel
|
| Engine will not start (MIL comes on and stays on, or never comes on at all, no DTCs set) |
Troubleshoot the MIL circuit (see MIL CIRCUIT TROUBLESHOOTING
). |
|
| Engine will not start (immobilizer indicator stays on or flashes) |
Troubleshoot the immobilizer system (see
TROUBLESHOOTING
). |
|
| Engine is hard to start (MIL works OK, no DTCs set) |
- Test the battery (see
BATTERY TEST
).
- Check the fuel pressure (see
FUEL PRESSURE TEST
).
- Test the throttle body (see
THROTTLE BODY TEST
).
|
- Low compression
- Intake air leaks
- Contaminated fuel
- Weak spark
|
| Cold fast idle too low (MIL works OK, no DTCs set) |
- Do the ECM/PCM idle learn procedure (see
ECM/PCM IDLE LEARN PROCEDURE
).
- Check the idle speed (see
IDLE SPEED INSPECTION
).
|
|
| Cold fast idle too high (MIL works OK, no DTCs set) |
- Do the ECM/PCM idle learn procedure (see
ECM/PCM IDLE LEARN PROCEDURE
).
- Check the idle speed (see
IDLE SPEED INSPECTION
).
- Inspect/adjust the throttle cable (see
THROTTLE CABLE ADJUSTMENT
).
- Test the throttle body (see
THROTTLE BODY TEST
).
|
|
| Idle speed fluctuates (MIL works OK, no DTCs set) |
- Do the ECM/PCM idle learn procedure (see
ECM/PCM IDLE LEARN PROCEDURE
).
- Check the idle speed (see
IDLE SPEED INSPECTION
).
- Inspect/adjust the throttle cable (see
THROTTLE CABLE ADJUSTMENT
).
- Test the throttle body (see
THROTTLE BODY TEST
).
|
Intake vacuum leaks |
| After warming up, idle speed is below specification without load (MIL works OK, no DTCs set) |
- Troubleshoot the A/C signal circuit (see A/C SIGNAL CIRCUIT TROUBLESHOOTING
).
- Troubleshoot the alternator FR signal circuit (see ALTERNATOR FR SIGNAL CIRCUIT TROUBLESHOOTING
).
- Test the throttle body (see
THROTTLE BODY TEST
).
|
Vacuum hose clogged/cracked/poor connection |
| After warming up, idle speed is above specification without load (MIL works OK, no DTCs set) |
- Inspect/adjust the throttle cable (see
THROTTLE CABLE ADJUSTMENT
).
- Troubleshoot the A/C signal circuit (see A/C SIGNAL CIRCUIT TROUBLESHOOTING
).
- Troubleshoot the alternator FR signal circuit (see ALTERNATOR FR SIGNAL CIRCUIT TROUBLESHOOTING
).
- Test the throttle body (see
THROTTLE BODY TEST
).
- Inspect the TP sensor (see
THROTTLE POSITION SENSOR SIGNAL INSPECTION
).
|
Intake air leaks |
| Low power (MIL works OK, no DTCs set) |
- Check the fuel pressure (see
FUEL PRESSURE TEST
).
- Inspect/adjust the throttle cable (see
THROTTLE CABLE ADJUSTMENT
).
- Test the throttle body (see
THROTTLE BODY TEST
).
|
- Low compression
- Incorrect camshaft timing
- Incorrect engine oil level
|
| Engine stalls (MIL works OK, no DTCs set) |
- Do the ECM/PCM idle learn procedure (see
ECM/PCM IDLE LEARN PROCEDURE
).
- Check the fuel pressure (see
FUEL PRESSURE TEST
).
- Check the idle speed (see
IDLE SPEED INSPECTION
).
- Troubleshoot the brake pedal position switch signal circuit (see BRAKE PEDAL POSITION SWITCH SIGNAL CIRCUIT TROUBLESHOOTING
).
|
- Intake air leaks
- Faulty harness and sensor connections
|
| Difficult to refuel (MIL works OK, no DTCs set) |
- Check the fuel vent tube between the EVAP canister and the fuel tank.
- Check the fuel tank vapor recirculation tube between the fuel pipe and the fuel tank.
- Replace the fuel tank (see FUEL TANK REPLACEMENT
).
|
Malfunctioning gas station filling nozzle. |
| Fuel overflows during refueling (No DTCs set) |
Replace the fuel tank (see FUEL TANK REPLACEMENT
). |
Malfunctioning gas station filling nozzle. |