B0052-2B
B0052-2B-PASSENGER SEATBELT BUCKLE SENSOR - WIRES SHORTED TOGETHER
For a complete wiring diagram, refer to the Wiring Information.
Theory of Operation
When powered, the Occupant Restraint Controller (ORC) sends a test current across the Passenger Seat Belt Buckle Switch circuits every 100 ms to verify the integrity of the switch and wiring. The front seat belt switches cannot be adjusted or repaired and, if ineffective or damaged, the entire front seat belt buckle-half unit must be replaced. The airbag warning lamp will display in the instrument cluster for this fault.
- When Monitored:
The ORC monitors the status of the seat belt switch circuits at power up and every 100ms thereafter while the ignition is in on.
- Set Condition:
This DTC sets when the ORC detects the (R58) Seat Belt Switch Sense circuit is shorted to ground or the seat belt switch become shorted together for more than 2.5 seconds. This DTC transitions from active to stored when the module sees a recovery from the shorted together condition for greater than five seconds.
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Restraints System Pre-Diagnostic Procedure.
1. DETERMINE ACTIVE OR STORED DTC
NOTE: Make sure the battery is fully charged.
1. Turn the ignition on.
2. 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 the RESTRAINTS SYSTEM INTERMITTENT TEST. Restraints System Intermittent Condition Test.
2. CHECK (R58) PASSENGER SEAT BELT BUCKLE SWITCH SENSE CIRCUIT FOR A SHORT TO THE (R60) PASSENGER SEAT BELT BUCKLE SWITCH RETURN CIRCUIT
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. Locate the Passenger Seat Belt Buckle Switch harness connector.
NOTE: Check connectors - Clean and repair as necessary.
2. Disconnect the connector.
3. Measure the resistance between the (R58) Passenger Seat Belt Buckle Switch Sense circuit and the (R60) Passenger Seat Belt Buckle Switch Return circuit at the appropriate terminals of the Passenger Seat Belt Buckle Switch harness connector.
Is the resistance below 5k Ohms?
Yes
- NOTE: If the short is found in the Seat Harness, do not attempt to repair the Seat Harness. Replace the Seat Harness.
- Repair or replace the (R58) Passenger Seat Belt Switch Sense circuit for a short to the (R60) Passenger Seat Belt Switch Return circuit.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.
No
- Go To 3
3. CHECK OPERATION OF PASSENGER SEAT BELT BUCKLE SWITCH
1. Replace the Passenger Seat Belt Buckle Switch. Seat Belt Buckle - Removal.
2. Reconnect the ORC harness connectors.If the vehicle is equipped with the standard key ignition, follow this ignition on warning.
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.
If the vehicle is equipped with the keyless ignition, follow this ignition on warning.
WARNING: Disconnect the 12-volt battery wait two minutes before proceeding, remove the ORC fuses, connect the 12-volt battery, wait two minutes before proceeding. Cycle the ignition to the On position, then reconnect the ORC fuses. 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 ORC.
5. Perform ORC module reset. Access the Miscellaneous Function menu from the ORC ECU Overview screen on the scan tool to perform this operation.
6. Wait one minute, and read active codes.
Did the active B0052-2B-PASSENGER SEATBELT BUCKLE SENSOR - WIRES SHORTED TOGETHER DTC return?
Yes
- 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. Failure to follow these instructions may result in possible 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.
- Replace the ORC. Occupant Restraint Controller - Removal.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.
No
- Repair is complete.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.