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Home >> Lincoln >> 2006 >> Navigator 4WD V8-5.4L VIN 5 >> Repair and Diagnosis >> Body and Frame >> Body Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Vehicle Security Module >> Pinpoint Tests
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Pinpoint Tests

PINPOINT TEST A: NO COMMUNICATION WITH THE VEHICLE SECURITY MODULE


A1-A2:






A2 Continued:






Normal Operation
The vehicle security module (VSM) voltage is supplied by the central junction box (CJB) through circuits 729 (RD/WH) and 1523 (DG). The vehicle security module is grounded through circuit 57 (BK).

Possible Causes
- fuse(s)
- circuit 57 (BK) open
- circuit 729 (RD/WH) open
- circuit 1523 (DG) open
- VSM
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