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Diagnostic Test

  1. DETERMINE ACTIVE OR STORED DTC 

    Does the scan tool display active: B1B8F-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT OPEN?

    Yes 

    • Go to step  2

    No 

  2. VERIFY SEAT POSITION SENSOR CIRCUITS 
    GC0105706Courtesy of CHRYSLER LLC
    WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
    1. Disconnect the Driver Seat Track Position Sensor connector.
    2. Measure the resistance between the (R261) Driver Seat Position Sensor Data circuit and the (R263) Driver Seat Position Sensor Voltage circuit at the Driver Seat Position Sensor connector.

      Is the resistance below 10k ohms?

      Yes 

      • Go to step  6

      No 

      • Go to step  3
  3. VERIFY OPEN SEAT POSITION SENSOR CIRCUITS 
    GC0136462Courtesy of CHRYSLER LLC
    CAUTION: Disconnecting or connecting the OCM connectors with the battery connected permanently damages the OCM.
    1. Disconnect the OCM C1 connector.
    2. Measure the (R261) Driver Seat Position Sensor Data circuit resistance between the OCM C1 connector cavity 10 and the Driver Seat Track Position Sensor connector cavity 1.
    3. Measure the (R263) Driver Seat Position Sensor Voltage circuit resistance between the OCM C1 connector cavity 9 and the Driver Seat Track Position Sensor connector cavity 2.

      Is the resistance below 5.0 ohms on both circuits?

      Yes 

      • Go to step  9

      No 

      • Go to step  4
  4. VERIFY DRIVER SEAT POSITION SENSOR PASSENGER SEAT WIRING 
    GC0136463Courtesy of CHRYSLER LLC
    1. Disconnect the C311 body harness to Passenger Seat connector.
    2. Measure the (R261) Driver Seat Position Sensor Data circuit resistance between the OCM C1 connector cavity 10 and the C311 (seat side) connector cavity 4.
    3. Measure the (R263) Driver Seat Position Sensor Voltage circuit resistance between the OCM C1 connector cavity 9 and the C311 (seat side) connector cavity 3.

      Is the resistance below 5.0 ohms on both circuits?

      Yes 

      No 

      • Go to step  5
  5. VERIFY DRIVER SEAT POSITION SENSOR BODY WIRING 
    GC0136464Courtesy of CHRYSLER LLC
    1. Disconnect the C310 body harness to Driver Seat connector.
    2. Measure the (R261) Driver Seat Position Sensor Data circuit resistance between the C311 (body side) connector cavity 4 and the C310 (body side) connector cavity 1.
    3. Measure the (R263) Driver Seat Position Sensor Voltage circuit resistance between the C311 (body side) connector cavity 3 and the C310 (body side) connector cavity 2.

      Is the resistance below 5.0 ohms on both circuits?

      Yes 

      No 

  6. VERIFY SEAT POSITION SENSOR CIRCUITS 
    GC0105706Courtesy of CHRYSLER LLC
    CAUTION: Disconnecting or connecting the OCM connectors with the battery connected permanently damages the OCM.
    1. Disconnect the OCM C1 connector.
    2. Measure the resistance between the (R261) Driver Seat Position Sensor Data circuit and the (R263) Driver Seat Position Sensor Voltage circuit at the Driver Seat Position Sensor connector.

      Is the resistance below 10k ohms?

      Yes 

      • Go to step  7

      No 

  7. VERIFY SEAT POSITION SENSOR CIRCUITS 
    GC0105706Courtesy of CHRYSLER LLC
    1. Disconnect the C311 Body Harness to Passenger Seat connector.
    2. Measure the resistance between the (R261) Driver Seat Position Sensor Data circuit and the (R263) Driver Seat Position Sensor Voltage circuit at the Driver Seat Position Sensor connector.

      Is the resistance below 10k ohms?

      Yes 

      • Go to step  8

      No 

  8. VERIFY SEAT POSITION SENSOR CIRCUITS 
    GC0105706Courtesy of CHRYSLER LLC
    1. Disconnect the C310 Body Harness to Driver Seat connector.
    2. Measure the resistance between the (R261) Driver Seat Position Sensor Data circuit and the (R263) Driver Seat Position Sensor Voltage circuit at the Driver Seat Position Sensor connector.

      Is the resistance below 10k ohms?

      Yes 

      No 

  9. CHECK OPERATION OF THE DRIVER SEAT TRACK POSITION SENSOR 
    1. Replace the Driver Seat Track Position Sensor.
    2. Reconnect all disconnected components except the battery.
      WARNING: Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
    3. Connect the scan tool to the Data Link Connector - use the most current software available.
    4. Use the scan tool and erase all codes in the OCM.
    5. Turn the Ignition Off, and wait 15 seconds before turning the Ignition On.
    6. Wait one minute, and read active codes.

      Did the active B1B8F-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT OPEN DTC return?

      Yes 

        WARNING: If the Occupant Classification Module (OCM) is dropped at any time, it must be replaced. Failure to take the proper precautions can result in accidental airbag deployment and serious or fatal injury.
      • WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
      • CAUTION: Disconnecting or connecting the OCM connectors with the battery connected permanently damages the OCM.
      • Replace the OCM in accordance with the Service Information.
      • Perform the OCM REZERO. Refer to DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure .

      No 

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