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Home >> Ford >> 2005 >> Escape 2WD L4-2.3L VIN Z >> Repair and Diagnosis >> Accessories and Optional Equipment >> Navigation System >> Testing and Inspection >> Pinpoint Tests >> Test A: The Navigation System Is Inoperative
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Test A: The Navigation System Is Inoperative

PINPOINT TEST A: THE NAVIGATION SYSTEM IS INOPERATIVE


A1-A2:






A2-A4:






A5:






Normal Operation
The audio unit receives voltage on circuits 137 (YE/BK), 1786 (BN/PK) and 956 (OG/LG) and is grounded by circuit 694 (BK/LG).

Possible Causes
- circuit 137 (YE/BK) open
- circuit 956 (OG/LG) open
- circuit 694 (BK/LG) open
- audio unit
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