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Home >> Ford >> 2011 >> Flex SE >> Repair and Diagnosis >> Electrical >> Gauges >> Instrument Cluster Illumination & Instrument Panel Illumination >> Diagnosis And Testing >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test B: All Dimmable Illumination Does Not Dim >> Pinpoint Test B: All DIMMABLE Illumination Does Not Dim

Pinpoint Test B: All DIMMABLE Illumination Does Not Dim

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. B1 CHECK THE EXTERIOR LIGHTING OPERATION 
    • Place the headlamp switch in each of its positions while observing the exterior lamps.
    • Do the exterior lamps operate correctly? 
  2. B2 CHECK THE INSTRUMENT PANEL DIMMER SWITCH 
    • Ignition OFF.
    • Disconnect: Instrument Panel Dimmer Switch C2065.
    • Carry out the component test for the instrument panel dimmer switch.

      Refer to ENGINE CONTROLS - COMPONENT TESTING for component testing.

    • Is the instrument panel dimmer switch OK? 
    • Yes:  Go to B3  .
    • No:  INSTALL a new instrument panel dimmer switch. Refer to INSTRUMENT PANEL DIMMER SWITCH  in this information. TEST the system for normal operation.
  3. B3 CHECK THE INSTRUMENT PANEL DIMMER SWITCH INPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Disconnect: SJB  C2280b.
    • Start the engine.
    • Measure the voltage between the instrument panel dimmer switch C2065-6, circuit VLN18 (BU/WH), harness side and ground.
      Fig 1: Measuring Voltage Between Instrument Panel Dimmer Switch C2065-6, Circuit VLN18 (BU/WH), Harness Side And Ground
      G07465617Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  REPAIR circuit VLN18 (BU/WH) for a short to voltage. TEST the system for normal operation.
    • No:  Go to B4  .
  4. B4 CHECK THE INSTRUMENT PANEL DIMMER SWITCH RETURN CIRCUIT FOR A SHORT TO VOLTAGE 
    • Measure the voltage between the instrument panel dimmer switch C2065-4, circuit RLN29 (WH/OG), harness side and ground.
      Fig 2: Measuring Voltage Between Instrument Panel Dimmer Switch C2065-4, Circuit RLN29 (WH/OG), Harness Side And Ground
      G07465618Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  REPAIR circuit RLN29 (WH/OG) for a short to voltage. TEST the system for normal operation.
    • No:  Go to B5  .
  5. B5 CHECK THE INSTRUMENT PANEL DIMMER SWITCH INPUT CIRCUIT FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Measure the resistance between the instrument panel dimmer switch C2065-6, circuit VLN18 (WH/BN), harness side and ground.
      Fig 3: Measuring Resistance Between Instrument Panel Dimmer Switch C2065-6, Circuit VLN18 (WH/BN), Harness Side And Ground
      G07465619Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes:  Go to B6  .
    • No:  REPAIR circuit VLN18 (BU/WH) for a short to ground. TEST the system for normal operation.
  6. B6 CHECK THE INSTRUMENT PANEL DIMMER SWITCH INPUT CIRCUIT FOR AN OPEN 
    • Measure the resistance between the instrument panel dimmer switch C2065-6, circuit VLN18 (BU/WH), harness side and the SJB  C2280b-34, circuit VLN18 (BU/WH), harness side.
      Fig 4: Measuring Resistance Between Instrument Panel Dimmer Switch C2065-6, Circuit VLN18 (BU/WH) And SJB C2280B-34, Circuit VLN18 (BU/WH)
      G07465620Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  Go to B7  .
    • No:  REPAIR circuit VLN18 (BU/WH) for an open. TEST the system for normal operation.
  7. B7 CHECK THE INSTRUMENT PANEL DIMMER SWITCH RETURN CIRCUIT FOR AN OPEN 
    • Measure the resistance between the instrument panel dimmer switch C2065-4, circuit RLN29 (WH/OG), harness side and the SJB  C2280b-33, circuit RLN29 (WH/OG), harness side.
      Fig 5: Measuring Resistance Between Instrument Panel Dimmer Switch C2065-4, Circuit RLN29 (WH/OG) And SJB C2280B-33, Circuit RLN29 (WH/OG)
      G07465621Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  Go to B8  .
    • No:  REPAIR circuit RLN29 (WH/OG) for an open. TEST the system for normal operation.
  8. B8 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 MODULE . 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.
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