CHECK HARNESS BETWEEN ECM AND IGNITION SWITCH.

1) Turn the ignition switch to OFF.

2) Disconnect the connectors from the ECM.

3) Turn the ignition switch to ON.

4) Measure the voltage between ECM and chassis ground.

Connector & terminal

(B136) No. 32 (+) — Chassis ground (−):

QUESTION

Is the voltage 10 V or more?

Yes No

Repair the short circuit to power in the harness between ECM and ignition switch.

Repair the poor contact of the ECM connector.