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Home >> Lincoln >> 2004 >> LS V8-3.9L VIN A >> Repair and Diagnosis >> Accessories and Optional Equipment >> Navigation System >> Testing and Inspection >> Pinpoint Tests >> Test B
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Test B

PINPOINT TEST B: NO COMMUNICATION WITH THE NAVIGATION SYSTEM MODULE


Test B1-B3:






Test B3 Continued:






Normal Operation
Battery voltage is supplied to the navigation system module through circuit 30-GK8 (RD/BK). The driver door module (DDM) supplies voltage to the navigation system module through circuit 10-GK8 (GY/BK) in the ON/ACC position. Circuit 31-GK8 (BK/RD) provides the navigation system module ground.

Possible Causes
- circuit 30-GK8 (RD/BK) open or shorted to ground
- circuit 10-GK8 (GY/BK) open or shorted to ground
- circuit 31-GK8 (BK/RD) open
- navigation system module
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