CHECK BODY INTEGRATED UNIT FUNCTION.

1) Turn the ignition switch to OFF.

2) Connect the harness connector to the body integrated unit.

3) Insert the key into the ignition switch, then measure changes in voltage between the antenna harness connectors.

Connector & terminal

(B280) No. 25 (+) — No. 26 (−):

QUESTION
Is the voltage −30 — 30 V? (Approx. 0.1 second after inserting the key) Is the voltage 0 V? (Approx. 1 second after inserting the key)
Yes	No
	Replace the body integrated unit, Replace all ignition keys (including the transponder). Execute the registration procedure next. Refer to the “PC application help for Subaru Select Monitor”.