CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL.

1) Turn the ignition switch to OFF.

2) Disconnect the connectors from ECM and electronic throttle control.

3) Measure the resistance between ECM and chassis ground.

Connector & terminal

(B134) No. 28 — Chassis ground:

(B134) No. 19 — Chassis ground:

(B134) No. 19 — (B137) No. 27:

QUESTION

Is the resistance 1 MΩ or more?

Yes No

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