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Home >> Mercury >> 2009 >> Sable Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1020 (Interior Lighting System) >> Diagnostic Tests >> Interior Lighting >> Inspection and Verification
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Inspection and Verification

WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 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 mechanical or electrical damage.
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Courtesy lamps
    • Map lamps
    • Cargo lamp
    • Door ajar switches (part of the door latches)
    • Liftgate ajar switch (part of the liftgate latch)
    • Liftgate glass ajar switch (part of the liftgate window latch)
    • Vanity lamps
    • Smart junction box (SJB) fuse(s):
      • 5 (10A) (ambient lighting) (if equipped)
      • 9 (15A) (courtesy lamps)
      • 25 (10A) (demand lamps)
    • Smart junction box (SJB)
    • Wiring, terminals or connectors
    • Courtesy lamps
    • Map lamps
    • Cargo lamp
    • Vanity lamps
    • Ambient lighting switch (if equipped)
    • Ambient lighting module (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 the interior lamp switches are in the DOOR position.
    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 SJB.
  9. If the DTCs retrieved are related to the concern, go to DTC Charts. For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES article.
  10. If no DTCs related to the concern are retrieved, go to Symptom Chart .
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