Test A: No Communication With The Vehicle Security Module

PINPOINT TESTS A: NO COMMUNICATION WITH THE VEHICLE SECURITY MODULE

A1-A2:

Normal Operation
The vehicle security module receives voltage on circuits 456 (DG/OG) and 645 (WH/LB), and ground on circuit 1205 (BK).

Possible Causes
- circuit 1205 (BK) open
- circuit 456 (DG/OG) open or short to ground
- circuit 645 (WH/LB) open or short to ground
- vehicle security module