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Pinpoint Test G: The Driver Rear Window Control Switch Illumination Is Inoperative Or Always On

  1. Refer to POWER WINDOWS for schematic and connector information.

    Normal Operation and Fault Conditions 

    REFER to: Instrument Panel and Interior Switches Illumination - System Operation and Component Description .

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    DDM B12FF:11 Rear Door Switch Illumination: Circuit Short To Ground This DTC sets on-demand and in continuous memory when the DDM detects a short to ground on the rear switch illumination output circuit.
    DDM B12FF:15 Rear Door Switch Illumination: Circuit Short To Battery Or Open This DTC sets on-demand and in continuous memory when the DDM detects an open or a short to voltage on the rear switch illumination output circuit.

    Possible Sources 

    • Communication network concern
    • Wiring, terminals or connectors
    • Rear window control switch
    • DDM

  2. G1 PERFORM A NETWORK TEST

    • Ignition ON.

    • Perform a network test.

    Does the DDM pass the network test? 

    Yes  GO to  G2
    No  DIAGNOSE a concern with the network. REFER to: Controller Area Network (CAN) Module Communications Network .

  3. G2 VERIFY THE REAR POWER WINDOW CONTROL SWITCH FUNCTIONALITY

    • Ignition ON.

    • Actuate the rear power window from the rear window control switch.

    Does the LH rear window operate normally? 

    Yes  If the switch illumination is always on, GO to  G3 If the switch illumination is inoperative, GO to  G6
    No  REFER to: Glass, Frames and Mechanisms .

  4. G3 CHECK THE ILLUMINATION CIRCUIT FOR A SHORT TO VOLTAGE

    • Place the headlamp switch in the OFF position.

    • Ignition OFF.

    • Disconnect LH Rear Window Control Switch C717 (LHD) or RH Rear Window Control Switch C801 (RHD).

    • Ignition ON.

    • Make sure all other illuminated switches inside the vehicle have turned OFF before continuing.

    • Measure:

      LHD 

      Positive Lead Measurement / Action Negative Lead
      C717-4
      GFD609698Courtesy of FORD MOTOR COMPANY
      		 Ground

      RHD 

      Positive Lead Measurement / Action Negative Lead
      C801-4
      GFD609698Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  GO to  G4
    No  INSTALL new window control switch. REFER to: Rear Door Window Control Switch .

  5. G4 CHECK THE ILLUMINATION CIRCUIT FOR A SHORT TO VOLTAGE WITH THE DOOR MODULE DISCONNECTED

    • Ignition OFF.

    • Disconnect DDM C501B (LHD) or C653B (RHD).

    • Ignition ON.

    • Measure:

      LHD 

      Positive Lead Measurement / Action Negative Lead
      C717-4
      GFD609698Courtesy of FORD MOTOR COMPANY
      		 Ground

      RHD 

      Positive Lead Measurement / Action Negative Lead
      C801-4
      GFD609698Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  G5

  6. G5 CHECK THE SWITCH CIRCUITS FOR A SHORT TOGETHER

    • Ignition OFF.

    • Measure:

      LHD 

      Positive Lead Measurement / Action Negative Lead
      C717-4
      GFD609699Courtesy of FORD MOTOR COMPANY
      		 C717-2
      C717-4
      GFD609699Courtesy of FORD MOTOR COMPANY
      		 C717-3
      C717-4
      GFD609699Courtesy of FORD MOTOR COMPANY
      		 C717-6

      RHD 

      Positive Lead Measurement / Action Negative Lead
      C801-4
      GFD609699Courtesy of FORD MOTOR COMPANY
      		 C801-2
      C801-4
      GFD609699Courtesy of FORD MOTOR COMPANY
      		 C801-3
      C801-4
      GFD609699Courtesy of FORD MOTOR COMPANY
      		 C801-6

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  G11
    No  REPAIR the affected circuit.

  7. G6 CHECK THE WINDOW CONTROL SWITCH ILLUMINATION CIRCUIT FOR VOLTAGE

    • Ignition OFF.

    • Disconnect LH Rear Window Control Switch C717 (LHD) or RH Rear Window Control Switch C801 (RHD).

    • Ignition ON.

    • Measure:

      LHD 

      Positive Lead Measurement / Action Negative Lead
      C717-4
      GFD609698Courtesy of FORD MOTOR COMPANY
      		 Ground

      RHD 

      Positive Lead Measurement / Action Negative Lead
      C801-4
      GFD609698Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 10 volts? 

    Yes  GO to  G9
    No  GO to  G7

  8. G7 CHECK THE WINDOW CONTROL SWITCH ILLUMINATION CIRCUIT FOR A SHORT TO GROUND

    • Ignition OFF.

    • Disconnect DDM C501B (LHD) or C653B (RHD).

    • Measure:

      LHD 

      Positive Lead Measurement / Action Negative Lead
      C717-4
      GFD609699Courtesy of FORD MOTOR COMPANY
      		 Ground

      RHD 

      Positive Lead Measurement / Action Negative Lead
      C801-4
      GFD609699Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  G8
    No  Repair the circuit.

  9. G8 CHECK THE WINDOW CONTROL SWITCH ILLUMINATION CIRCUIT FOR AN OPEN

    • Measure:

      LHD 

      Positive Lead Measurement / Action Negative Lead
      C717-4
      GFD609699Courtesy of FORD MOTOR COMPANY
      		 C501B-12

      RHD 

      Positive Lead Measurement / Action Negative Lead
      C801-4
      GFD609699Courtesy of FORD MOTOR COMPANY
      		 C653B-12

    Is the resistance less than 3 ohms? 

    Yes  GO to  G11
    No  Repair the circuit.

  10. G9 CHECK THE ILLUMINATION GROUND CIRCUIT FOR AN OPEN

    • Measure:

      LHD 

      Positive Lead Measurement / Action Negative Lead
      C717-4
      GFD609698Courtesy of FORD MOTOR COMPANY
      		 C717-6

      RHD 

      Positive Lead Measurement / Action Negative Lead
      C801-4
      GFD609698Courtesy of FORD MOTOR COMPANY
      		 C801-6

    Is the voltage greater than 10 volts? 

    Yes  INSTALL new window control switch. REFER to: Rear Door Window Control Switch .
    No  GO to  G10

  11. G10 CHECK THE ILLUMINATION GROUND CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect DDM C501B (LHD) or C653B (RHD).

    • Measure:

      LHD 

      Positive Lead Measurement / Action Negative Lead
      C717-6
      GFD609699Courtesy of FORD MOTOR COMPANY
      		 C501B-11

      RHD 

      Positive Lead Measurement / Action Negative Lead
      C801-6
      GFD609699Courtesy of FORD MOTOR COMPANY
      		 C653B-11

    Is the resistance less than 3 ohms? 

    Yes  GO to  G11
    No  Repair the circuit.

  12. G11 CHECK FOR CORRECT DDM (DRIVER DOOR MODULE) OPERATION

    • Disconnect and inspect all DDM and related in-line connectors.

    • Repair:

      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary

    • Reconnect the DDM and related in-line connectors and all previously disconnected illumination system connectors. Make sure all connectors seat and latch correctly.

    • Operate the system to determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DDM. REFER to: Driver Door Module (DDM) .
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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