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Inspection and Verification: Notes

WARNING: This page is about a different car, the 2008 Mercury Sable, 2008 Ford Taurus X, and 2008 Ford Taurus. 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)
    • Antenna
    • Audio input jack
    • Speaker(s)
    • Steering wheel controls
    • Universal serial bus (USB) port
    • Navigation map DVD
    • Noise suppression equipment
    • Smart junction box (SJB) fuse(s):
      • 3 (15A) (satellite digital audio receiver system [SDARS] module, rear entertainment module [RETM], and accessory protocol interface module [APIM] hot at all times)
      • 28 (5A) (ACM hot in START)
      • 38 (20A) (subwoofer amplifier hot at all times)
      • 39 (20A) (ACM hot at all times)
      • 41 (15A) (accessory delay feed)
    • Wiring, terminals or connectors
  3. If an obvious cause for an observed or reported concern is found, 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 article, No Power To The Scan Tool, to diagnose no communication with 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 article 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 article.
    • If the network test passes, retrieve and record the continuous memory DTCs.
  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 Tables .
  10. If no DTCs related to the concern are retrieved, go to the Speaker Walk-Around Test (All Audio Systems Except Navigation), the Audio Control Module (ACM) Self-Diagnostic Mode (All Audio Systems Except Navigation), the Audio Control Module (ACM) Self-Diagnostic Mode - Navigation, or the Satellite Audio Bezel Diagnostic Test.
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