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Inspection and Verification

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the customer concern.
  2. Visually inspect for obvious signs of mechanical or electrical damage.
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Audio Control Module (ACM)
    • AM/FM antenna
    • Satellite radio antenna
    • Steering wheel controls
    • Audio input jack
    • Universal Serial Bus (USB) port
    • Speaker(s)
    • Noise suppression equipment
    • Smart Junction Box (SJB) fuse(s):
      • 3 (15A) (Accessory Protocol Interface Module (APIM))
      • 13 (5A) (Satellite Digital Audio Receiver System (SDARS) module)
      • 18 (20A) (audio amplifier or audio Digital Signal Processing (DSP) module)
      • 28 (5A) (ACM  hot in START)
      • 38 (20A) (subwoofer or audio DSP  module)
      • 39 (20A) (ACM  )
      • 41 (15A) (accessory delay feed)
  3. If the fault is visually evident, correct the cause (if possible) before proceeding to the next step.
    4. NOTE: Make sure to use the latest scan tool software release.
  4. If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).
    5. NOTE: The Vehicle Communication Module (VCM) LED prove-out confirms power and ground from the DLC  are provided to the VCM  .
  5. 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.
  6. If the scan tool does not communicate with the vehicle:
    • Verify the ignition key is in the ON position.
    • Verify the scan tool operation with a known good vehicle.
    • Refer to MODULE COMMUNICATIONS NETWORK to diagnose no response from the PCM.
  7. 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, retrieve and record the continuous memory DTCs.
    8. NOTE: Do not press any buttons on the ACM  while it is carrying out the self-test.
  8. Clear the continuous DTCs and carry out the self-test diagnostics for the ACM  .
  9. If the DTCs retrieved are related to the concern, go to DTC CHARTS . For all other DTCs, refer to the Diagnostic Trouble Code (DTC) Chart in MULTIFUNCTION ELECTRONIC MODULES .
  10. If no DTCs related to the concern are retrieved, GO to SYMPTOM CHART 
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