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Home >> Ford >> 2007 >> Expedition RWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Cluster System And Panel Illumination >> Diagnostic Tests >> Instrument Cluster and Panel Illumination >> Inspection and Verification

Inspection and Verification

  1. Verify the customer concern.
  2. Visually inspect the following for obvious signs of electrical damage.
    VISUAL INSPECTION CHART

    Electrical
    • Smart junction box (SJB) fuse 10 (15A)
    • Circuitry
    • Illuminated components
    • SJB
  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 release software.
  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 powertrain control module (PCM).
  7. Carry out the network test.
    • If the scan tool responds with no communication with the SJB, 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 the Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Chart. For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES article.
  10. If no DTCs related to the concern are retrieved, go to Symptom Chart .
SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) CHART

DTC Description Action
B2212 Panel Dim Switch Out of Range Go to Pinpoint Test C .
B2A32 LED Backlighting Output Circuit Open If the backlighting components are inoperative, go to Pinpoint Test A .
If the backlighting components are always on, go to Pinpoint Test B .
B2A33 LED Backlighting Output Circuit Short to Ground Go to Pinpoint Test A .
B29B7 White lighting Output Circuit Open If the backlighting components are inoperative, go to Pinpoint Test A .
If the backlighting components are always on, go to Pinpoint Test B .
B29B8 White lighting Output Circuit Short to Ground Go to Pinpoint Test A .
All other DTCs - REFER to MULTIFUNCTION ELECTRONIC MODULES article.
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