CHECK HARNESS CONNECTOR BETWEEN BODY INTEGRATED UNIT AND CHASSIS GROUND.

1) Turn the ignition switch to ON.

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

Connector & terminal

(B280) No. 1 (+) — Chassis ground (−):

(B280) No. 6 (+) — Chassis ground (−):

(B280) No. 7 (+) — Chassis ground (−):

(B279) No. 22 (+) — Chassis ground (−):

QUESTION

Is the voltage 9 — 16 V?

Yes No

Check the harness for open circuit between body integrated unit and battery, and check the fuses.