Diagnostic Aids
A small amount of resistance in battery feed circuit to PCM may cause a no-start condition. Test battery feed circuit for excessive resistance or corrosion. The PCM grounds will cause a no-start condition only if all are not making good connections. Inspect TP sensor for the following conditions:
- Binding
- Sticking
- Intermittent Short
- Intermittent Open
The ECT sensor may be skewed within specifications and may not set a DTC. On a cold vehicle, ECT and IAT values should be 5°F or 3°C of each other. On a hot vehicle, let engine cool to ambient temperature, and then test ECT.
The MAP sensor may be skewed within specifications and not set a DTC. Refer to DTC P0105 for testing. See appropriate SELF-DIAGNOSTICS article. If CKP sensor is loose, it may cause an intermittent no-start condition by moving away from the reluctor wheel. Ensure sensor and matting surfaces are clean and tight.