CHECK HARNESS BETWEEN ECM AND GENERATOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connectors from ECM and generator.

3) Turn the ignition switch to ON.

4) Measure the voltage between generator connector and the engine ground.

Connector & terminal

(F26) No. 3 (+) — Engine ground (−):

QUESTION

Is the voltage 10 V or more?

Yes No

Repair the short circuit to power in harness between ECM and generator connector.

Repair the poor contact of the ECM connector.