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.
- When we replace ECM ROM at will, the problem may be occur.