CHECK POWER SUPPLY OF ACCELERATOR PEDAL POSITION SENSOR.

1) Turn the ignition switch to ON.

2) Measure the voltage between accelerator pedal position sensor connector and chassis ground.

Connector & terminal

(B315) No. 1 (+) — Chassis ground (−):

(B315) No. 4 (+) — Chassis ground (−):

QUESTION

Is the voltage 4.5 — 5.5 V?

Yes No

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