CHECK COMMUNICATION CIRCUIT HARNESS.

1) Turn the ignition switch to ON.

2) Measure the voltage between the body integrated unit connector terminal and chassis ground.

Connector & terminal

(B280) No. 4 (+) — Chassis ground (−):

(B280) No. 15 (+) — Chassis ground (−):

QUESTION

Is the voltage 0 V?

Yes No

Repair the harness between body integrated unit and ECM.