CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL CONNECTOR.

1) Connect the connector to ECM.

2) Turn the ignition switch to ON.

3) Measure the voltage between electronic throttle control connector and engine ground.

Connector & terminal

(E57) No. 1 (+) — Engine ground (−):

(E57) No. 2 (+) — Engine ground (−):

QUESTION

Is the voltage 5 V or more?

Yes No

Repair the short circuit to power in harness between ECM and electronic throttle control connector.