Engine Control Module: Testing and Inspection

ENGINE CONTROL MODULE (ECM)
Check the internal control module ROM/RAM error.




CIRCUIT DIAGRAM




HARNESS INSPECTION PROCEDURE




TROUBLESHOOTING PROCEDURES

TROUBLESHOOTING HINTS
If the ground wire of the ECM is not connected securely to ground, the ECM will not operate correctly. If you replace ECM ROM without further diagnosis, the problem may reoccur.