CHECK WIRING HARNESS.

1) Disconnect the front passenger room antenna connector and the collation CM connector.

2) Using a tester, check continuity between the front passenger room antenna connector and the collation CM connector.

Connector & terminal

(i25) No. 1 — (B421) No. 11:

(i25) No. 3 — (B421) No. 12:

QUESTION

Is there continuity?

Yes No

Repair or replace the open circuit of harness.