CHECK HARNESS BETWEEN ECM AND ACCELERATOR PEDAL POSITION SENSOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from the ECM and accelerator pedal position sensor.

3) Measure the resistance between ECM and chassis ground.

Connector & terminal

(B135) No. 30 — Chassis ground:

(B135) No. 31 — Chassis ground:

QUESTION

Is the resistance 1 MΩ or more?

Yes No

Repair the short circuit to ground in harness between ECM and accelerator pedal position sensor connector.