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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 241 (Occupant Restraint Controller (Orc) - DTCS B1204 To B1C39) >> DTC Troubleshooting >> B1CDC-Passenger Occupant Detector Circuit High >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.
  1. VERIFY ACTIVE DTC 
    NOTE:

    The seat belt warning lamp in the instrument cluster does not set to indicate a passenger seat belt reminder feature.

    NOTE:

    The use of a approved special tool or Digital Multimeter such as a Fluke Meter that will not apply more than 20 milliamperes to a circuit are the only measurement tools to be used.

    NOTE:

    Make sure the battery is fully charged.

    1. Turn the ignition on.
    2. With the scan tool, read the ORC DTCs
      NOTE:

      Diagnosing for the high code but also will be checking for an Open fault in both the (R283) signal and (R284) return circuits.

      Does the scan tool display active B1CDC-PASSENGER OCCUPANT DETECTOR CIRCUIT HIGH DTC?

      Yes 

      • Go To  2

      No 

  2. CHECK THE (R283) PASSENGER OCCUPANT DETECTOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 1: Checking Passenger Occupant Detector Signal Circuit For A Short To Voltage
    GC0149382Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    Repair of the wiring is only to be done on the seat body harness side of the connector. If the wiring fault is in the component side of the wiring harness routed into the seat cushion a ODS sensor replacement is to be performed. Refer to SENSOR, OCCUPANT DETECTION, REMOVAL .

    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. Keep the Passenger Occupant Detector Sensor harness connector in the seat cushion connected.
    2. Keep the inline harness under seat connector connected.
    3. Keep the Occupant Detection Sensor (ODS) in the passenger seat cushion connected.
    4. Disconnect the ORC harness connectors.
    5. Connect the SRS Load Tool Adapter (special tool #8443-32-L, Adapter, SRS Adapter) or (special tool #8443-32-R, Adapter, SRS Adapter) to the ORC harness connectors.
      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.

    6. Measure the voltage of the (R283) Passenger Occupant Detector Signal circuit at the appropriate terminal of the SRS Load Tool Adapter (special tool #8443-32-L, Adapter, SRS Adapter) or (special tool #8443-32-R, Adapter, SRS Adapter).

      Is there any voltage present?

      Yes 

      NOTE:

      The ODS sensor is to be replaced whenever a short to voltage fault has been found in the ODS harness even after the harness repair has been performed.

      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.

      • Repair the (R283) Passenger Occupant Detector Signal circuit for a short to voltage.
      • Replace the ODS sensor in accordance with the Service Information. Refer to SENSOR, OCCUPANT DETECTION, REMOVAL .
      • Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  3
  3. CHECK THE (R283) PASSENGER OCCUPANT DETECTOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE BETWEEN THE ORC AND THE IN-LINE UNDERSEAT HARNESS CONNECTOR 
    Fig 2: Measuring Voltage Between Ground & Occupant Detector Signal Circuit
    GC0149381Courtesy of CHRYSLER GROUP, 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.

    NOTE:

    Check connectors - Clean/Repair as necessary.

    1. Disconnect the in-line underseat harness connector.
      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.

    2. Measure the voltage between ground and the (R283) Passenger Occupant Detector Signal circuit at the appropriate terminal of the SRS Load Tool Adapter (special tool #8443-32-L, Adapter, SRS Adapter) or (special tool #8443-32-R, Adapter, SRS Adapter).

      Is there voltage present?

      Yes 

      NOTE:

      The ODS sensor is to be replaced whenever a short to voltage fault has been found in the ODS harness even after the harness repair has been performed.

      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.

      • Repair the short to voltage in the (R283) Passenger Occupant Detector Signal circuit located between the ORC and the in-line underseat jumper harness connector.
      • Replace the ODS sensor in accordance with the Service Information. Refer to SENSOR, OCCUPANT DETECTION, REMOVAL .
      • Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  4
  4. CHECK THE (R283) PASSENGER OCCUPANT DETECTOR SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE IN THE UNDERSEAT JUMPER HARNESS 
    Fig 3: Measuring Voltage Between Ground & Occupant Detector Signal Circuit
    GC0149381Courtesy of CHRYSLER GROUP, 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. Connect the underseat connector.
      NOTE:

      Confirm the connector is seated firmly and the lock tab is fully seated.

    2. Access the Passenger Occupant Detector Sensor (ODS) harness connector located at the passenger seat cushion.
    3. Disconnect the Passenger Occupant Detector Sensor (ODS) harness connector.
      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.

    4. Measure the voltage between ground and the (R283) Occupant Detector Signal circuit at the appropriate terminal of the SRS Load Tool Adapter (special tool #8443-32-L, Adapter, SRS Adapter) or (special tool #8443-32-R, Adapter, SRS Adapter).

      Is there any voltage present?

      Yes 

      NOTE:

      The ODS sensor is to be replaced whenever a short to voltage fault has been found in the ODS harness even after the harness repair has been performed.

      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.

      • Repair the short to voltage in the (R283) Passenger Occupant Detector Signal circuit located between the underseat in-line harness connector and the Passenger Occupant Detector Sensor harness connector.
      • Replace the ODS sensor in accordance with the Service Information. Refer to SENSOR, OCCUPANT DETECTION, REMOVAL .
      • Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  5
  5. CHECK THE (R283) PASSENGER OCCUPANT DETECTOR SENSOR SIGNAL CIRCUIT AND (R284) PASSENGER OCCUPANT DETECTOR SENSOR RETURN CIRCUIT FOR AN OPEN OR HIGH RESISTANCE BETWEEN THE ORC AND THE UNDERSEAT HARNESS CONNECTOR 
    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 underseat harness connector.
    2. Measure the resistance of the (R283) Occupant Detector Sensor Signal circuit from the underseat harness connector to the appropriate terminal of the SRS Load Tool Adapter (special tool #8443-32-L, Adapter, SRS Adapter) or (special tool #8443-32-R, Adapter, SRS Adapter).
    3. Measure the resistance of the (R284) Occupant Detector Sensor Return circuit from the underseat connector to the appropriate terminal of the SRS Load Tool Adapter (special tool #8443-32-L, Adapter, SRS Adapter) or (special tool #8443-32-R, Adapter, SRS Adapter).

      Is the resistance for either circuit below 1.0 Ohm?

      Yes 

      • Go To  6

      No 

      • Repair the (R283) Occupant Detector Sensor Signal circuit or (R284) Occupant Detector Sensor Return circuit for an open or high resistance.
      • Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  6. CHECK THE (R283) PASSENGER OCCUPANT DETECTOR SENSOR SIGNAL CIRCUIT AND (R284) PASSENGER OCCUPANT DETECTOR RETURN CIRCUIT FOR AN OPEN OR HIGH RESISTANCE IN THE SEATBACK JUMPER HARNESS 
    Fig 4: Measuring Resistance Of Passenger Occupant Sensor Signal Circuit & Occupant Detector Sensor Return Circuit
    GC0149384Courtesy of CHRYSLER GROUP, 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. Reconnect the passenger seat underseat jumper connector.
      NOTE:

      Inspect terminal pins and verify the passenger under seat jumper connector is fully seated correctly and that the connector locking tab is correctly in place.

    2. Access the Passenger Occupant Detector Sensor located in the passenger seat cushion.
    3. Disconnect the Passenger Occupant Detector Sensor.
    4. Measure the resistance of the (R283) Passenger Occupant Sensor Signal circuit and (R284) Occupant Detector Sensor Return circuit of the appropriate terminals of the ODS sensor to the appropriate terminals of the SRS Load Tool Adapter (special tool #8443-32-L, Adapter, SRS Adapter) or (special tool #8443-32-R, Adapter, SRS Adapter).

      Is the resistance for either circuit below 1.0 Ohm?

      Yes 

      • Go To  7

      No 

      NOTE:

      Repair of the wiring is only to be done on the seat body harness side of the connector. If the wiring fault is in the component side of the wiring harness routed into the seat cushion a ODS sensor replacement is to be performed. Refer to SENSOR, OCCUPANT DETECTION, REMOVAL .

      • Repair the (R283) Passenger Occupant Detector Signal circuit or (R284) Occupant Detector Sensor Return circuit in the body harness for an open or high resistance.
      • Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  7. CHECK THE (R283) PASSENGER OCCUPANT DETECTOR SENSOR SIGNAL CIRCUIT AND (R284) PASSENGER OCCUPANT DETECTOR SENSOR RETURN CIRCUIT FOR AN OPEN OR HIGH RESISTANCE WITH THE ODS HARNESS FULLY CONNECTED 
    Fig 5: Measuring Resistance Of Passenger Occupant Detector Signal Circuit To Passenger Occupant Detector Sensor Return Circuit
    GC0149386Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    Confirm the connector is seated firmly and the lock tab is fully seated.

    1. Connect the Occupant Detector Sensor (ODS), verify all in-line connections are secure.
    2. Measure the resistance of the (R283) Passenger Occupant Detector Signal circuit to the (R284) Passenger Occupant Detector Sensor Return circuit at the appropriate terminals of the SRS Load Tool Adapter (special tool #8443-32-L, Adapter, SRS Adapter) or (special tool #8443-32-R, Adapter, SRS Adapter).

      Is the resistance below 700 Ohms?

      Yes 

      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.

      • Turn the ignition Off and wait 15 seconds before turning the ignition On.
      • Wait one minute and read active codes.
      • If the B1CDC-Passenger Occupant Detector circuit High DTC becomes active, replace the ORC in accordance with the Service Information. Refer to MODULE, OCCUPANT RESTRAINT CONTROLLER, REMOVAL .

      No 

      • Go To  8
  8. CHECK OPERATION OF THE PASSENGER OCCUPANT DETECTOR SENSOR 
    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. Replace the Passenger Occupant Detector Sensor in accordance with the Service Information. Refer to SENSOR, OCCUPANT DETECTION, REMOVAL .
    2. Remove any special tools or jumper wires and reconnect all previously 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 the ORC stored codes.
    5. Turn the Ignition Off and wait 15 seconds before turning the Ignition On.
    6. Wait one minute and read active codes and if there are none present read the stored codes.

      Does the scan tool display active B1CDC-PASSENGER OCCUPANT DETECTOR CIRCUIT HIGH DTC?

      Yes 

      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.

      WARNING:

      If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to follow these instructions may result in possible serious or fatal injury.

      No 

      • Repair is complete.
      • Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
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