CHECK HARNESS BETWEEN ECM AND ENGINE GROUND.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from ECM.

3) Measure the resistance of harness between ECM connector and chassis ground.

Connector & terminal

(B134) No. 41 — Chassis ground:

(B134) No. 80 — Chassis ground:

(B134) No. 81 — Chassis ground:

QUESTION

Is the resistance less than 5 Ω?

Yes No

Repair the harness and connector.

NOTE:

In this case, repair the following item:

Open circuit of harness between ECM connector and engine ground

Poor contact of coupling connector