FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Diagnostic Procedure

DIAGNOSTIC PROCEDURE

NOTE: This diagnostic chart is based on the premise that the engine is cranked normally. If the engine is not cranked, proceed to DIAGNOSIS BY SYMPTOM.

1. Check for the test mode.
- If OK proceed to next circuit inspection shown in DIAGNOSIS BY SYMPTOM.
- If not OK proceed to step 2.
2. Check for open in harness and connector between Engine Control Module and relay.
- If OK check and replace Engine Control Module.
- If not OK repair or replace harness or connector.