Inspection and Verification
WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage.VISUAL INSPECTION CHART
Mechanical Electrical - Exterior mirror
- Exterior mirror control switch
- Exterior mirror glass
- Exterior mirror cover
- Body Control Module (BCM) fuse(s):
- 7 (7.5A)
- 15 (15A)
- 32 (15A)
- Battery Junction Box (BJB) fuse(s):
- 23 (30A)
- 26 (40A)
- 28 (30A)
- 50 (15A)
- 93 (5A)
- Driver Seat Module (DSM)
- Exterior mirror control switch
- Exterior mirror motor
- Exterior mirror
- Exterior mirror glass
- Rear window defrost relay
- HVAC - Dual Automatic Temperature Control (DATC) Module
- HVAC - Electronic Manual Temperature Control (EMTC) Module
- Loose or corroded connections
- Wiring harness
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
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NOTE: Make sure to use the latest scan tool software release.
If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).
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NOTE: The Vehicle Communication Module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM .
If the scan tool does not communicate with the VCM :
- check the VCM connection to the vehicle.
- check the scan tool connection to the VCM .
- refer to MODULE COMMUNICATIONS NETWORK , No Power To The Scan Tool, to diagnose no power to the scan tool.
- If the scan tool does not communicate with the vehicle:
- verify the ignition is in RUN (ON).
- The air bag warning indicator prove-out (other indicators may NOT prove ignition is in RUN) confirms ignition in RUN. If ignition does not enter RUN, refer to STEERING COLUMN SWITCHES to diagnose no power in RUN.
- verify the scan tool operation with a known good vehicle.
- refer to MODULE COMMUNICATIONS NETWORK to diagnose no response from the PCM.
- verify the ignition is in RUN (ON).
- Carry out the network test.
- If the scan tool responds with no communication for one or more modules, refer to MODULE COMMUNICATIONS NETWORK .
- If the network test passes, proceed with module self-test diagnostics.
- Carry out the self-test diagnostics for the BCM , DSM module (if equipped) and the PCM.
- If the DTCs retrieved are related to the concern, go to DTC CHARTS .
- If no DTCs related to the concern are retrieved, GO to Symptom Chart .