Driver Seat Belt Switch Circuits Short Together

DRIVER SEAT BELT SWITCH CIRCUITS SHORT TOGETHER





For a complete wiring diagram refer to the Wiring Information Electrical Diagrams.

Theory of Operation

When powered, the Occupant Restraint Controller (ORC) sends a test current across the Passenger Seat Belt Switch circuits every 60 ms to verify the integrity of the switch and wiring. The DTC will set if the circuits are shorted together 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:
While the ignition on and the Occupant Restraint Controller (ORC) configured for a Driver Seat Belt Switch, the ORC checks the switch input current ranges.

- Set Condition:
If the ORC detects passenger seat belt switch circuits shorted together.





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

1. VERIFY ACTIVE DRIVER SEAT BELT SWITCH CIRCUIT SHORTED TOGETHER
1. Turn the ignition on.
2. With the scan tool, read ORC DTC.

NOTE: Ensure the battery is fully charged.

Does the scan tool display active: DRIVER SEAT BELT SWITCH CIRCUITS SHORT TOGETHER DTC?

Yes

- Go To 2

No

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

2. CHECK THE DRIVER SEAT BELT SWITCH CIRCUITS FOR A SHORT TOGETHER





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 Switch connector.
2. Disconnect the ORC connectors.

NOTE: Check connectors - Clean and repair as necessary.

3. Connect the Load Tool 8443-25 ORC Adapter to the ORC connectors.
4. Measure the resistance between the (R57) Driver Seat Belt Switch Sense circuit and the (R59) Driver Seat Belt Switch Ground circuit at the Driver Seat Belt Switch connector.

Is the resistance less than 10K ohms while measuring these circuits?

Yes

- Repair the (R57) circuit short to the (R59) circuit.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

No

- Go To 3

3. CHECK OPERATION OF THE DRIVER SEAT BELT SWITCH
1. Replace the Driver Seat Belt Switch.
2. Reconnect the vehicle body harness to the 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. 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 codes in all airbag system modules.
6. Turn the Ignition Off, and wait 15 seconds before turning the Ignition On.
7. Wait one minute, and read active codes and if there are none present read the stored codes.

Did the active DRIVER SEAT BELT SWITCH CIRCUIT SHORTED TOGETHER DTC return?

Yes

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

- WARNING: If the airbag control module is dropped at any time, it must be replaced. Failure to take the proper precautions could result in accidental airbag deployment and 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.