CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE.

Measure the voltage between electronic throttle connector and engine ground.

Connector & terminal

(E57) No. 6 (+) — Engine ground (−):

(E57) No. 4 (+) — Engine ground (−):

QUESTION

Is the voltage less than 10 V?

Yes No

Repair the short circuit of harness between ECM connector and electronic throttle connector.