Ignition Control Module: Testing and Inspection

Disconnect the 8-P connector from the ignition control module (ICM).
Inspect the connector and socket terminals to be sure they are all making good contact.

- If the terminals are bent, loose, or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, make the following input tests at the connector.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, the 1CM must be faulty; replace it.

NOTE:
- The tachometer should operate normally.
- See Fuel and Emissions when the malfunction indicator lamp (MIL) blinks.
- If necessary, perform an input test on the ICM after finishing the fundamental tests for the ignition system and fuel and emission systems.