CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL RELAY.

1) Turn the ignition switch to OFF.

2) Disconnect the connectors from the ECM.

3) Measure the resistance between ECM connector and chassis ground.

Connector & terminal

(B136) No. 1 — Chassis ground:

QUESTION

Is the resistance 1 MΩ or more?

Yes No

Repair the poor contact of ECM connector. Replace the ECM if defective.

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