CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL.

1) Turn the ignition switch to OFF.

2) Disconnect the connectors from electronic throttle control.

3) Measure the resistance between ECM and chassis ground.

Connector & terminal

(B137) No. 25 — Chassis ground:

(B137) No. 23 — Chassis ground:

(B137) No. 23 — (B136) No. 22:

(B137) No. 24 — Chassis ground:

(B137) No. 24 — (B136) No. 22:

QUESTION

Is the resistance 1 MΩ or more?

Yes No

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