CHECK GROUND CIRCUIT FOR ECM.

1) Disconnect the connector from ECM.

2) 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:

(B135) No. 13 — Chassis ground:

(B135) No. 32 — 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 terminal.

• Poor contact of coupling connector