CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL.

1) Disconnect the connectors from ECM.

2) Measure the resistance of harness between ECM and electronic throttle control connector.

Connector & terminal

(B134) No. 18 — (E57) No. 6:

(B134) No. 28 — (E57) No. 4:

(B134) No. 29 — (E57) No. 3:

QUESTION

Is the resistance less than 1 Ω?

Yes No

Repair the harness and connector.

NOTE:

In this case, repair the following items.

• Open circuit in harness between ECM and electronic throttle control connector

• Poor contact of coupling connector