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Pinpoint Test F: C1008:11, C1008:15, C1009:11, C1009:15, C1B14:11, C1B14:12

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
  1. Refer to POWER TAILGATE/RETRACTABLE RUNNING BOARDS for schematic and connector information.

    Normal Operation and Fault Conditions 

    The DSM monitors the movement, position and current draw of each PRB with a hall-effect switch that is integral to each PRB motor. The DSM supplies a shared 10 volt controlled voltage and a shared ground circuit to the PRB motor hall-effect sensors, and receives separate sensor signals from the RH and LH hall-effect sensors. Voltage varies on the LEFT or RIGHT RB hall-effect signal circuit as the motor moves the PRB. An open or shorted circuit will set these DTC.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    DSM C1008:11 Left Power Running Board Position/Motion Sensor: Circuit Short To Ground This DTC sets if the system voltage is between 9.5 - 16 volts, the LHPRB motion is commanded and the left RB hall effect signal circuit at the DSM does not change.
    DSM C1008:15 Left Power Running Board Position/Motion Sensor: Circuit Short To Battery Or Open This DTC sets if the system voltage is between 9.5 - 16 volts, the LHPRB motion is commanded and the left RB hall effect signal circuit at the DSM does not change.
    DSM C1009:11 Right Power Running Board Position/Motion Sensor: Circuit Short To Ground This DTC sets if the system voltage is between 9.5 - 16 volts, the RHPRB motion is commanded and the right RB hall effect signal circuit at the DSM does not change.
    DSM C1009:15 Right Power Running Board Position/Motion Sensor: Circuit Short To Battery Or Open This DTC sets if the system voltage is between 9.5 - 16 volts, the RHPRB motion is commanded and the right RB hall effect signal circuit at the DSM does not change.
    DSM C1B14:11 Sensor Supply Voltage A: Circuit Short To Ground This DTC sets if the system voltage is between 9.5 - 16 volts, any PRB motion is commanded and the hall effect power circuit at the DSM is less than 7.5 volts.
    DSM C1B14:12 Sensor Supply Voltage A: Circuit Short To Battery This DTC sets if the system voltage is between 9.5 - 16 volts, any PRB motion is commanded and the hall effect power circuit at the DSM is greater than 10 volts.

    Possible Sources 

    • Wiring, terminals or connectors
    • RH or LHPRB motor
    • DSM

    Visual Inspection and Pre-checks 

    • RH and LHPRB motor harness connections and wiring.

  2. NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

  3. F1 CHECK THE HALL EFFECT POWER AND RETURN CIRCUITS BETWEEN THE PRB (POWER RUNNING BOARD) MOTORS FOR AN OPEN

    • Ignition OFF.

    • Disconnect LHPRB motor C3185.

    • Disconnect RHPRB motor C3186.

    Are the resistances less than 3 ohms? 

    Yes  GO to  F2
    No  REPAIR the circuit.

  4. F2 CHECK THE HALL-EFFECT SENSOR POWER AND RETURN CIRCUITS

    NOTE: Use a meter with a min-max feature or recording capabilities to obtain accurate measurements. The DSM disables the voltage output immediately if the PRB motor is not present.

    • Ignition ON.

    • Make sure the PRB is set to AUTO in the vehicle message center.

    • Close all vehicle doors.

    • Connect the meter to the RHPRB motor electrical connector, harness side.

    • Connect the meter to the LHPRB motor electrical connector, harness side.

    • Set the meter to measure DC (direct current) voltage.

    • Set the meter range to greater than 15 volts.

    • Enable the min-max or recording feature on the meter.

    • NOTE: Make sure all test connections are made at the PRB motor before the door is opened.

      Open any RH side door or LH side door.

    Is the voltage between 7 and 10.5 volts? 

    Yes  GO to  F7
    No  If the voltage was less than 7 volts, GO to  F3If the voltage was greater than 10.5 volts, GO to  F6

  5. F3 CHECK HALL-EFFECT SENSOR POWER CIRCUIT FOR VOLTAGE

    NOTE: Use a meter with a min-max feature or recording capabilities to obtain accurate measurements. The DSM disables the voltage output immediately if the PRB motor is not present.

    • Close all vehicle doors.

    • Connect the meter to the RHPRB motor electrical connector, harness side.

    • Connect the meter to the LHPRB motor electrical connector, harness side.

    • Set the meter to measure DC (direct current) voltage.

    • Set the meter range to greater than 15 volts.

    • Enable the min-max or recording feature on the meter.

    • NOTE: Make sure all test connections are made at the PRB motor before the door is opened.

      Open any RH side door or LH side door.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3186A-4
      GFD561509Courtesy of FORD MOTOR COMPANY
      		 Ground
      C3185A-4
      GFD561509Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage between 7 and 10.5 volts? 

    Yes  GO to  F5
    No  GO to  F4

  6. F4 CHECK HALL-EFFECT SENSOR POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND

    • Ignition OFF.

    • Disconnect DSM C341E.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3186A-4
      GFD561510Courtesy of FORD MOTOR COMPANY
      		 C341E-3
      C3185A-4
      GFD561510Courtesy of FORD MOTOR COMPANY
      		 C341E-3
      C3186A-4
      GFD561510Courtesy of FORD MOTOR COMPANY
      		 Ground
      C3185A-4
      GFD561510Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms between the PRB motor and the DSM module; and greater than 10, 000 ohms between the PRB motor and ground? 

    Yes  GO to  F9
    No  REPAIR the circuit.

  7. F5 CHECK THE HALL-EFFECT SENSOR RETURN CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect DSM C341E.

    Is the resistance less than 3 ohms? 

    Yes  GO to  F9
    No  REPAIR the circuit.

  8. F6 CHECK THE HALL-EFFECT SENSOR POWER CIRCUIT FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect DSM C341E.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3186A-4
      GFD561509Courtesy of FORD MOTOR COMPANY
      		 Ground
      C3185A-4
      GFD561509Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  F9

  9. F7 CHECK THE HALL-EFFECT SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect DSM C341E.

    • Ignition ON.

    • For DTC C1009:11 and C1009:15 (RH side), measure:
      Positive Lead Measurement / Action Negative Lead
      C3186A-5
      GFD561509Courtesy of FORD MOTOR COMPANY
      		 Ground

    • For DTC C1008:11 and C1008:15 (LH side), measure:
      Positive Lead Measurement / Action Negative Lead
      C3185A-5
      GFD561509Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  F8

  10. F8 CHECK THE HALL-EFFECT SENSOR SIGNAL CIRCUIT FOR AN OPEN OR SHORT TO GROUND

    • Ignition OFF.

    • For DTC C1009:11 and C1009:15 (RH side), measure:
      Positive Lead Measurement / Action Negative Lead
      C3186A-5
      GFD561510Courtesy of FORD MOTOR COMPANY
      		 C341E-19
      C3186A-5
      GFD561510Courtesy of FORD MOTOR COMPANY
      		 Ground

    • For DTC C1008:11 and C1008:15 (LH side), measure:
      Positive Lead Measurement / Action Negative Lead
      C3185A-5
      GFD561510Courtesy of FORD MOTOR COMPANY
      		 C341E-18
      C3185A-5
      GFD561510Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms between the PRB motor and DSM; and greater than 10, 000 ohms between the PRB motor and ground? 

    Yes  For DTC C1009:11 and C1009:15, REPLACE the RHPRB motor. REFER to: Power Running Board (PRB) Motor . For DTC C1008:11 and C1008:15, REPLACE the LHPRB motor. REFER to: Power Running Board (PRB) Motor .
    No  REPAIR the circuit.

  11. F9 CHECK THE RBM FOR CORRECT OPERATION

    • Ignition OFF.

    • Disconnect All PRB system and related in-line connectors.

    • Check for:

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

    • Connect all PRB system and related in-line connectors and make sure they seat correctly.

    • Operate the system and verify the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new DSM. REFER to: Driver Front Seat Module (DSM) .
    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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