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Inspection and Verification

WARNING: This page is about a different car, the 2009 Mercury Mountaineer, 2009 Ford Explorer Sport Trac, and 2009 Ford Explorer. 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 electrical damage.
    VISUAL INSPECTION CHART

    Electrical
    • Battery junction box (BJB) fuse(s):
      • 3 (50A) (no communication with smart junction box [SJB])
      • 6 (40A) (no communication with ABS module)
      • 19 (30A) (no communication with power running board [PRB] module)
      • 23 (20A) (no communication with 4X4 control module)
      • 24 (10A) (no communication with PCM)
      • 26 (20A) (no communication with 4X4 control module)
      • 27 (20A) (no communication with transmission control module [TCM])
      • 33 (30A) (no communication with ABS module)
      • 39 (15A) (no communication with PCM)
      • 41 (15A) (no communication with accessory protocol interface module [APIM], satellite digital audio receiver system [SDARS] module, rear entertainment module [RETM])
    • SJB fuse(s):
      • 1 (20A) (no communication with driver seat module [DSM])
      • 2 (5A) (no communication with SJB)
      • 3 (20A) (no communication with audio control module [ACM])
      • 4 (20A) (no power to scan tool)
      • 8 (15A) (no communication with instrument cluster [IC])
      • 9 (2A) (no communication with TCM, PCM)
      • 12 (5A) (no communication with ACM)
      • 17 (10A) (no communication with restraints control module [RCM], occupant classification system module [OCSM])
      • 18 (10A) (no communication with ABS module, 4X4 control module, parking aid module [PAM])
      • 20 (10A) (no communication with heating ventilation air conditioning [HVAC]) module
      • 24 (10A) (no communication with IC)
      • 28 (10A) (no communication with HVAC module)
    • Data link connector (DLC)
    • Wiring harness
    • 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.
    NOTE: The vehicle communication module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.
  4. If the cause is not visually evident, connect the scan tool to the DLC.

    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.
    • Go to Pinpoint Test U , to diagnose No Power To The Scan Tool.
    5. NOTE: During the network test, the scan tool will first attempt to communicate with the PCM, after establishing communication with the PCM, the scan tool will then attempt to communicate with all other modules on the vehicle.
  5. Carry out the network test.
    • If the network test passes, retrieve and record the continuous memory DTCs and proceed to Step 6.
    • If the network test fails, go to Symptom Chart  to identify the module not communicating.
  6. If the DTCs retrieved are related to the concern, go to DTC Tables. For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES article.
  7. If no DTCs related to the concern are retrieved, go to Symptom Chart .
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