B0050-13

B0050-13-DRIVER SEATBELT SENSOR - CIRCUIT OPEN







Theory of Operation
When powered, the Occupant Restraint Controller (ORC) sends a test current across the Driver Seat Belt Buckle Switch circuits every 60 ms to verify the integrity of the switch and wiring. The DTC will set if the circuits are open for 2.5 seconds and the code will transitions from active to stored when the current return to normal range for 5 seconds.
- When Monitored:
The ORC checks the Driver Seat Belt Buckle Switch input current when the ignition ON and the Occupant Restraint Controller (ORC) configured for a Driver Seat Belt Buckle Switch.

- Set Condition:
The DTC will set if the ORC detects an open on the Driver Seat Belt Buckle Switch circuits.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Restraints System Pre-Diagnostic Procedure.

1. VERIFY ACTIVE DTC

NOTE: Ensure the battery is fully charged.

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

Does the scan tool display active B0050-13-DRIVER SEATBELT SENSOR - CIRCUIT OPEN DTC?

Yes

- Go To 2

No

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

2. VERIFY WIRING





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 Driver Seat Belt Buckle Switch harness connector.
2. Disconnect the ORC harness connectors.

NOTE: Check connectors - Clean and repair as necessary.

3. Connect the SRS Load Tool Adapter 8443-24 to the ORC C2 harness connector.
4. Measure the resistance of the (R57) Driver Seat Belt Buckle Switch Sense circuit between the Driver Seat Belt Buckle Switch harness connector cavity 2 and the SRS Load Tool Adapter 8443-24 cavity 10.
5. Measure the resistance of the (R59) Driver Seat Belt Buckle Switch Ground circuit between the Driver Seat Belt Buckle Switch harness connector cavity 1 and SRS Load Tool Adapter 8443-24 cavity 18.

Is the resistance greater than 1.0 Ohms on any of these circuits?

Yes

- Repair the (R57, R59) Driver Seat Belt Buckle Switch circuits for an open.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

No

- Go To 3

3. VERIFY OPEN SWITCH
1. Replace the Driver Seat Belt Buckle Switch.
2. Reconnect the vehicle body harness connector to the Driver Seat Belt Buckle Switch.
3. 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.

4. Connect the scan tool to the Data Link Connector - use the most current software available.
5. Use the scan tool and erase the stored DTCs.
6. Turn the Ignition OFF, and wait 15 seconds before turning the Ignition ON.
7. Wait one minute, and read active DTCs and if there are none present read the stored DTCs.

Does the scan tool display active B0050-13-DRIVER SEATBELT SENSOR - CIRCUIT OPEN 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.

- Replace the ORC.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

No

- Repair is complete.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.