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Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> External Pages >> Different car >> Section 163 (Instrument Cluster Illumination And Panel Illumination) >> Diagnosis And Testing >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test C: All Dimmable Switch Illumination Is Inoperative >> Pinpoint Test C: All DIMMABLE Switch Illumination Is Inoperative

Pinpoint Test C: All DIMMABLE Switch Illumination Is Inoperative

WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. C1 CHECK FOR RECORDED SJB DTCs FROM THE ON-DEMAND SELF-TEST 
    • Use the recorded results from the SJB self-test.
    • Is DTC B2A32 present? 
    • Yes  : GO to C2.
    • No  : VERIFY the SJB fuse 10 (15A) is OK. If OK, GO to C2. If not OK, REFER to the OEM WIRING DIAGRAMS to identify the possible causes of the circuit short.

      After the repair:

      If no DTCs are present, TEST the system for normal operation.

      If DTC B106E is present, CLEAR the DTCs and  REPEAT the self-test (required to enable the backlighting output driver if DTC B106E is present)  . TEST the system for normal operation.

      If DTC B106F is present, INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.

  2. C2 BYPASS THE SJB 
    NOTE: If the jumper wire fails, refer to the OEM WIRING DIAGRAMS to identify the possible causes of the circuit short. After the repair, if no DTCs are present, test the system for normal operation. If DTC B106E is present, clear the DTCs and  repeat the self-test (required to enable the backlighting output driver if DTC B106E is present)  . Test the system for normal operation. If DTC B106F is present, install a new SJB. Refer to MULTIFUNCTION ELECTRONIC MODULES . Test the system for normal operation.
    • Ignition OFF.
    • Disconnect: SJB C2280b.
    • Connect a fused jumper wire between the SJB C2280b-39, circuit VLN04 (VT/GY) and battery positive.
      Fig 1: Connecting Fused Jumper Wire Between C2280B-39, Circuit VLN04 (VT/GY) And Battery Positive
      G06064792Courtesy of FORD MOTOR CO.
    • Do the backlighting components illuminate? 
    • Yes  : REMOVE the jumper wire. GO to C3.
    • No  : REMOVE the jumper wire. REPAIR circuit VLN04 (VT/GY) for an open. CLEAR the DTCs. REPEAT the self-test.
  3. C3 CHECK FOR CORRECT SJB OPERATION 
    • Disconnect all the SJB connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the SJB connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    • Yes  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.
    • No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
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