Engine Control Module: Testing and Inspection

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




TROUBLESHOOTING PROCEDURES




CIRCUIT DIAGRAM




HARNESS INSPECTION PROCEDURES

TROUBLESHOOTING HINTS
- If the ground wire of the ECM is not connected securely to ground, the ECM will not operate correctly.
- If the ECM/ROM is replaced without any other diagnosis, the problem may re-occur.