B1B54

B1B54-1ST ROW PASSENGER SEAT BELT SENSOR CIRCUIT LOW

For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
When powered, the Occupant Restraint Controller (ORC) sends a test current to the belt switches to verify the integrity of the switch and wiring. The use of the ORC connector adapter tool in the tests below provides a test point in place of the module.

- Set Condition:
The ORC monitors the status of the seat belt switch circuits at power up and every 60 ms thereafter while the ignition is in on.

This DTC sets when the ORC detects the seat belt switch circuits have become shorted to ground for more than 2.5 seconds. This DTC transitions from active to stored when the module sees a recovery from the shorted to ground condition for greater than 5 seconds.





Diagnostic Test

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

Turn the ignition on.
With the scan tool, read all active ORC DTCs.
Is the DTC active or stored?

ORC - ACTIVE DTC

- Go to 2

ORC - STORED DTC

- Perform *RESTRAINTS SYSTEM INTERMITTENT TEST. Initial Inspection and Diagnostic Overview.

2. PASSENGER SEAT BELT SWITCH SIGNAL CIRCUIT SHORTED TO GROUND
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

Disconnect the Passenger Seat Belt Switch connector.
Disconnect the ORC connector.

NOTE: Check connectors - Clean and repair as necessary.

Connect the Load Tool ORC 8443-28 Adaptor to the ORC connectors.
Measure the resistance of the (R58) Passenger Seat Belt Switch Signal circuit between the Load Tool ORC 8443-28 Adaptor and ground.
Is the resistance below 10.0 Ohms?

Yes

- Repair or replace the (R58) Passenger Seat Belt Switch Signal circuit for a short to ground.
- Perform *RESTRAINTS SYSTEM VERIFICATION TEST. Verification Tests.

No

WARNING: If the Occupant Restraint Controller (ORC) 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.

- Replace the ORC.
- Perform *RESTRAINTS SYSTEM VERIFICATION TEST. Verification Tests.