BRN Wire Communication Line Test
BRN Wire Communication Line TestSpecial Tools Required
MFCS service connector 07WAZ-001010A
1. Remove the driver's multiplex control unit from the driver's under-dash fuse/relay box.
2. Carefully pry off the driver's door switch trim.
3. Disconnect door multiplex connector A (20P).
4. Check for continuity between A23 terminal of the driver's under-dash fuse/relay box socket and No. 15 terminal of the door multiplex control unit connector A (20P).
Is there continuity?
YES - Replace the multiplex control unit most closely related to the failure.
NO - Repair an open in the wire between the door multiplex connector and the driver's under-dash fuse/relay box. If the wire is OK, replace the driver's under-dash fuse/relay box.