Test U
PINPOINT TEST U: NO COMMUNICATION WITH THE VEHICLE SECURITY MODULETest U1-U2:
Test U2-U3:
Normal Operation
The vehicle security module controls the remote keyless entry and computer-operated locks and vehicle security. The vehicle security module receives power through BJB fuse 2 (30A) and CJB fuse 2 (10A). From the fuses power is delivered to the module through circuits 456 (DG/OG), 645 (WH/LB) and is grounded on circuit 1205 (BK).
Possible Causes
- battery junction box (BJB) fuse 2 (30A)
- central junction box (CBJ) fuse 2 (10A)
- circuit 645 (WH/LB) open or shorted to ground
- circuit 456 (DG/OG) open or shorted to ground
- circuit 1205 (BK) open
- vehicle security module