CHECK BODY INTEGRATED UNIT OUTPUT SIGNAL.

Measure the voltage between the connector of the body integrated unit and chassis ground when moving the door key switch to LOCK direction.

Connector & terminal

(B279) No. 14 (+) — Chassis ground (−):

QUESTION

Does the voltage change to 9 V or more → less than 1 V? (During lock output)

Yes No

Replace the body integrated unit.