B1B9A

B1B9A- SEATBELT CINCH SENSOR CIRCUIT OPEN

For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
With the ignition on.

- Set Condition:
If the Occupant Classification Module (OCM) detects voltage below the low threshold on the Passenger Seat Belt Tension Sensor Signal circuit.





Diagnostic Test

1. DETERMINE ACTIVE OR STORED DTC
NOTE: Ensure that the battery is fully charged.

Turn the ignition on.
With the scan tool, read OCM DTCs.
Does the scan tool display this DTC as ACTIVE or STORED?

ACTIVE DTC

- Go To 2

STORED DTC

- Clear all Stored DTCs, cycle the key off then on. If this DTC returns Go To 2

2. CHECK THE CIRCUIT VOLTAGE ON THE PASSENGER SEAT BELT TENSION SENSOR FEED CIRCUIT WITH PASSENGER SEAT BELT TENSION SENSOR HARNESS CONNECTOR DISCONNECTED

WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

Disconnect the BTS Sensor harness connector.

WARNING: To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.

Measure the voltage on the Passenger Seat Belt Tension Sensor Feed circuit in the body side harness connector.
Is the Passenger Seat Belt Tension Sensor Feed circuit voltage above 5.5 volts?

Yes

- Replace the Passenger Seat Assembly.
- Perform *AIRBAG VERIFICATION TEST. Airbag System Verification Test

No

- Go To 3

3. CHECK THE CIRCUIT VOLTAGE ON THE PASSENGER SEAT BELT TENSION SIGNAL CIRCUIT WITH PASSENGER SEAT BELT TENSION SENSOR HARNESS CONNECTOR DISCONNECTED
Measure the voltage on the Passenger Seat Belt Tension Sensor Feed circuit in the body side harness connector.
Is the Passenger Seat Belt Tension Sensor Signal circuit voltage above 3.0 volts?

Yes

- Replace the Passenger Seat Assembly.
- Perform *AIRBAG VERIFICATION TEST. Airbag System Verification Test

No

- Go To 4

4. PASSENGER SEAT BELT TENSION SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE

WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

Using a 12 volt test light connected to 12 volts, check the Passenger Seat Belt Tension Sensor Ground circuit in the body side harness connector.

NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

Is the test light illuminated and bright?

Yes

- Replace the Passenger Seat Belt Tension Sensor.
- Perform *AIRBAG VERIFICATION TEST. Airbag System Verification Test

No

- Replace the Passenger Seat Assembly.
- Perform *AIRBAG VERIFICATION TEST. Airbag System Verification Test