PINPOINT TEST A: THE COMPASS IS INOPERATIVE (Continued)
A2 CHECK THE COMPASS MODULE VOLTAGE SUPPLY (Continued)
• Is the voltage greater than 10 volts?
A3
CHECK THE COMPASS MODULE GROUND FOR CONTINUITY
• Ignition OFF.
• Disconnect: Negative Battery Cable.
• Measure the resistance between the auto-dimming interior mirror,
harness side and ground as follows:
Option Content Positive Meter Lead Negative Meter
Lead
Without camera
mirror, without SYNC
C911-3
GD139 (BK/YE)
Ground
Without camera
mirror, with SYNC
C9012-10
GD139 (BK/YE)
Ground
With camera mirror C9039-3
GD139 (BK/YE)
Ground
Yes
GO to A4.
No
REPAIR the circuit. TEST the system for normal
operation.
419-11-5
Electronic Compass 419-11-5
DIAGNOSIS AND TESTING (Continued)
2011 Mustang, 2/2011
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