Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).
2.CHECK HARNESS FOR OPEN CIRCUIT
Check the resistance between the data link connector terminals.

BCM branch line circuit
M&A branch line circuitThe seat belt warning continues sounding, or does not sound
Description
Seat belt warning does not sound even though driver seat belt is
not fastened.
Seat belt warning sounds even though driver seat belt is fastened.
Diagnosis Procedure
1. CHECK WARNING CHIME OPERATION
With the driver door open, turn lighting switch to 1st or 2nd position.
2. ...
Headlamp
Wiring Diagram
...
Audio antenna
Location of Antenna
AV control unit
AV control unit antenna feeder
In-line connectors M103, M501
Antenna amp.
Window antenna
Satellite radio antenna feeder
Satellite radio antenna
Window Antenna Repair
ELEMENT CHECK
Attach probe circuit tester (ohm setting) to antenna ...