B1CDD

B1CDD-PASSENGER OCCUPANT DETECTOR CIRCUIT OPEN

NOTE: The ORC module can not recognize the difference between a short to voltage (High) fault and a open fault. please use the B1CDC Passenger Occupant Detector Circuit High diagnostic procedure which will also cover the Open fault diagnostics. Testing and Inspection .





For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The Occupant Detection Sensor (ODS) is a resistive sensor that is located in the front passenger seat. This sensor is only used for passenger seat belt reminder. The seat sensor assumes a passenger is present when a minimum of 53 pounds (20kg) of weight is placed in the seat. The resistance of the sensor decreases, signaling to the ORC module that a passenger is present. The ORC then transmits this information to the Instrument cluster over the CAN bus. The passenger is only reminded to buckle up if the vehicle speed is over 5mph (8kph) for 45 seconds. The ODS receives battery voltage and clean ground through dedicated sensor plus and minus circuits from the ORC. The ORC receives, processes, and continuously monitors (monitor rate of 500 ms) the analog signal from the ODS. The ODS component is not repairable, if determined inoperable, and would require to be replaced with a new component.

- When Monitored:
The ORC receives, processes, and continuously monitors (monitor rate of 500 ms) the analog signal from the ODS.

- Set Condition:
The Occupant Detection (ODS) Sensor circuits DTC will become active if the condition of less than or equal to 3mA sensor current is present for 4.5 sec. The DTC will become stored 4.5 seconds after the conditions are corrected. If the ODS sensor is turned off and a "Clear All Faults" occurs, the ODS sensor will be restarted.





Always Perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Restraints System Pre-Diagnostic Procedure.VERIFY ACTIVE DTC

NOTE: Make sure the battery is fully charged.

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

Does the scan tool display active B1CDC-PASSENGER OCCUPANT DETECTOR CIRCUIT HIGH or B1CDD-PASSENGER OCCUPANT DETECTOR CIRCUIT OPEN DTC?

Yes

- Go To B1CDC-PASSENGER OCCUPANT DETECTOR CIRCUIT HIGH to diagnose both the Open and Short to Voltage ODS faults. B1CDC.

No

- Perform the RESTRAINTS SYSTEM INTERMITTENT TEST. Restraints System Intermittent Condition Test.