Fuel and Emissions Systems Symptom Troubleshooting Index
WARNING: This page is about a different variant/trim than selected.
Symptom Troubleshooting Index
When the vehicle has one of these symptoms, check for a diagnostic trouble code (DTC) with the HDS. If there is no DTC, do the diagnostic procedure for the symptom, in the sequence listed, until you find the cause.
| Symptom | Diagnostic procedure | Also check for |
|---|---|---|
| Engine will not start (MIL works OK, no DTCs set, generator motor works OK) |
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| Engine will not start, and HDS does not communicate with the PCM (MIL comes on and stays on, no DTCs set) | ||
| MIL comes on and stays on, or never comes on at all, no DTCs set | Troubleshoot the MIL circuit . | |
| Engine starts but stalls immediately (MIL works OK, no DTCs set, immobilizer indicator stays on or flashes) | Check the keyless access system . |
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| Engine is hard to start (MIL works OK, no DTCs set) |
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| Cold fast idle too low (MIL works OK, no DTCs set) |
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| Cold fast idle too high (MIL works OK, no DTCs set) | Check the idle speed. | Intake air leaks |
| Idle speed fluctuates (MIL works OK, no DTCs set) |
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| After warming up, idle speed is below specifications without load (MIL works OK, no DTCs set) | Do the carbon accumulation check . | Incorrect valve timing or clearance adjustment |
| Symptom | Diagnostic procedure | Also check for |
|---|---|---|
| After warming up, idle speed is above specifications without load (MIL works OK, no DTCs set) | Inspect the APP sensor . | Intake air leaks |
| Low power (MIL works OK, no DTCs set) |
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| Engine stalls (MIL works OK, no DTCs set) |
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| Difficult to refuel (MIL works OK, NO DTCs set) |
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| Fuel overflows during refueling (No DTCs set) | Replace the fuel tank . | Malfunctioning gas station filling nozzle |
| HDS does not communicate with the PCM or the vehicle | Troubleshoot the DLC circuit . | Correct HDS software |