CHECK HARNESS BETWEEN ECM AND MAIN FUSE BOX CONNECTOR.

1) Disconnect the connectors from the ECM.

2) Measure the resistance between ECM and chassis ground.

Connector & terminal

(B136) No. 5 — Chassis ground:

QUESTION

Is the resistance 1 MΩ or more?

Yes No

Repair the ground short circuit of harness between ECM and battery terminal.