CHECK HARNESS BETWEEN ECM AND POWER SUPPLY CM CONNECTOR.

Measure the resistance between ECM and chassis ground.

Connector & terminal

Euro 4 model

(B135) No. 21 — Chassis ground:

Euro 5 model

(B136) No. 34 — Chassis ground:

QUESTION

Is the resistance 1 MΩ or more?

Yes No

Repair the short circuit to ground in harness between ECM and power supply CM connector.