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Home >> Mercury >> 2009 >> Sable Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1637 (Interior Lighting System) >> Diagnosis And Testing >> Interior Lighting >> Inspection and Verification

Inspection and Verification

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. 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
    • Smart Junction Box (SJB) fuse(s):
      • 9 (15A) (courtesy lamps)
      • 25 (10A) (demand lamps)
    • SJB 
    • Wiring, terminals or connectors
    • Bulb(s)
    • Interior lamp(s)
    • Cargo lamp
    • Vanity lamps
    • Instrument panel dimmer switch
    • Ambient lighting switch (if equipped)
  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 PINPOINT TEST W: NO POWER TO THE SCAN TOOL , 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:
  7. Carry out the network test.
    • If the scan tool responds with no communication for one or more modules, refer to DIAGNOSIS AND TESTING .
    • 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 SJB  .
  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 DIAGNOSTIC TROUBLE CODE (DTC) CHART .
  10. If no DTCs related to the concern are retrieved, GO to SYMPTOM CHART .
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