CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL CONNECTOR.

1) Turn the ignition switch to ON.

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

Connector & terminal

(E57) No. 5 (+) — 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.