CHECK WIRING HARNESS.

1) Disconnect the connector from ECM.

2) Using a tester, check continuity between the power supply CM and ECM.

Connector & terminal

Gasoline engine model

(B420) No. 31 — (B135) No. 34:

Diesel engine model

(B420) No. 31 — (B135) No. 93:

QUESTION

Is there continuity?

Yes No

Repair the open circuit of harness.