CHECK HARNESS BETWEEN ECM AND ACCELERATOR PEDAL POSITION SENSOR CONNECTOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connectors from ECM.

3) Measure the resistance between ECM connectors.

Connector & terminal

Euro 4 model

(B137) No. 25 — (B136) No. 29:

Euro 5 model

(B135) No. 30 — (B135) No. 31:

QUESTION

Is the resistance 1 MΩ or more?

Yes No

Repair the poor contact of accelerator pedal position sensor connector. Replace the accelerator pedal if defective.

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