CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE.

1) Turn the ignition switch to ON.

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

Connector & terminal

(E57) No. 4 (+) — Engine ground (−):

QUESTION

Is the voltage less than 10 V?

Yes No

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