CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL MOTOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connectors from the ECM and electronic throttle control.

3) Measure the resistance between ECM and electronic throttle control connector.

Connector & terminal

(B137) No. 2 — (E57) No. 1:

(B137) No. 3 — (E57) No. 1:

(B137) No. 4 — (E57) No. 2:

(B137) No. 5 — (E57) No. 2:

QUESTION

Is the resistance less than 1 Ω?

Yes No

Repair the harness and connector.

NOTE:

In this case, repair the following item:

• Open circuit in harness between ECM and electronic throttle control

• Poor contact of coupling connector