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Home >> Lincoln >> 2011 >> MKS EcoBoost >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Instrument Cluster Illumination And Panel Illumination >> Diagnosis And Testing >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test E: One Or More Control Switch Illumination is Inoperative >> Pinpoint Test E: One Or More Control Switch Illumination Is Inoperative

Pinpoint Test E: One Or More Control Switch Illumination Is Inoperative

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. E1 CHECK THE WINDOW CONTROL SWITCH ILLUMINATION 
    • Ignition ON.
    • Observe the illumination on all the window control switches.
    • Are all the window control switches illuminated? 
    • Yes  : GO to E2.
    • No  : GO to  E3.
  2. E2 CHECK THE VOLTAGE TO THE SINGLE ILLUMINATION SOURCE 
    NOTE: If the headlamp switch illumination is the inoperative source, unplug the headlamp switch connector to measure the illumination circuit voltage. Unplugging the connector causes the SJB to turn the exterior lights on by default for 10 minutes, so it is unnecessary to turn on the headlamp switch.
    • Ignition OFF.
    • Disconnect: Inoperative Illumination Source.
    • Ignition ON.
    • Place the headlamp switch in the PARKING LAMPS ON position.
    • Rotate the instrument panel dimmer switch to the full illumination position.
    • Measure the voltage between the inoperative illuminated component, harness side and ground as follows:
      Component Connector-Pin Circuit
      Floor shifter C3245-4 VLN37 (BU/WH)
      Headlamp switch C205-2 VLN37 (BU/WH)
      Luggage compartment lid release switch C2269-3 VLN37 (BU/WH)
      Rear sun shade switch C3196-3 VLN37 (BU/WH)
      Start/stop switch C2195-5 VLN37 (BU/WH)
      Instrument panel dimmer switch C2065-1 VLN37 (BU/WH)
      LR heated seat switch C320-5 CBP41 (BU)
      RR heated seat switch C321-5 CBP41 (BU)
      Fig 1: Checking Voltage To Single Illumination Source
      G06757141Courtesy of FORD MOTOR CO.
    • Component Connector-Pin Circuit
      Roof opening panel control switch C912-2 CBP41 (BU)
      LH door lock control switch C541-3 CBB38 (GY/BU)
      RH door lock control switch C605-3 CBP41 (BU)
      Memory seat switch C503-3 CBB38 (GY/BU)
      Fig 2: Checking Voltage To Single Illumination Source
      G06757142Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes  : For the headlamp switch, GO to E3.

      For any other component/switch, INSTALL a new component/switch in question. TEST the system for normal operation.

    • No  : REPAIR the voltage supply circuit in question for an open. TEST the system for normal operation.
  3. E3 CHECK THE GROUND CIRCUIT TO THE SINGLE ILLUMINATION SOURCE FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: Suspect Window Control Switch (if not illuminated).
    • Ignition ON.
    • Measure the voltage between the inoperative illuminated component, harness side and ground as follows:
      Component Connector-Pin/Circuit Connector-Pin/Circuit
      Headlamp switch C205-2 VLN37 (BU/WH) C205-1 GD116 (BK/VT)
      LH front window control switch C504-3 CBB38 (GY/BU) C504-15 GD133 (BK)
      RH front window control switch C604-1 CPW14 (VT/WH) C604-5 GD145 (BK/BU)
      LH rear window control switch C701-1 CPW14 (VT/WH) C701-5 GD133 (BK)
      RH rear window control switch C801-1 CPW14 (VT/WH) C801-5 GD145 (BK/BU)
      Fig 3: Checking Ground Circuit To Single Illumination Source For Open
      G06757143Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes  : INSTALL a new component in question. TEST the system for normal operation.
    • No  : REPAIR the ground circuit in question for a short to ground. TEST the system for normal operation.
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