System Checks

SYSTEM DIAGNOSIS (USA only)
1. If the engine cranks but does not start and the check engine warning light does not light with the Ignition Switch in position II, do Test B. ECM Power & Ground Test
2. If the engine cranks but does not start and the check engine warning light does light with Ignition Switch in position II, do Test C. Related Tests, Information and Procedures
3. If the engine starts but the check engine warning light does not light momentarily, check the bulb and BY wire.