Power Supply Testing

POWER SUPPLY CIRCUIT FOR ECM

EC-MAIN-01:

EC-MAIN-02:

Wiring Diagram

Diagnostic Procedure (Steps 1 - 3):

Diagnostic Procedure (Steps 4 - 6):

Diagnostic Procedure (Steps 7 - 10):

Diagnostic Procedure (Steps 11 - 14):

Diagnostic Procedure (Steps 15 - 18):

Diagnostic Procedure

Component Inspection

ECM RELAY




1. Apply 12 V direct current between ECM relay terminals 1 and 2.




2. Check continuity between relay terminals 3 and 5, 6 and 7.
3. If NG, replace ECM relay.