Passenger Seat Belt Switch Circuits Short Together

PASSENGER 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:
During initialization and every 60 ms thereafter, the ORC test the current on the Passenger Seat Belt Switch circuit.

- Set Condition:
This DTC sets when the ORC detects the seat belt switch circuits have 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 5 seconds.





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

1. DETERMINE ACTIVE OR STORED DTC

Is the DTC active or stored?

ACTIVE DTC

- Go To 2

STORED DTC

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

2. CHECK THE (R58) PASSENGER SEAT BELT SWITCH LINE 1 SIGNAL CIRCUIT FOR A SHORT TO GROUND





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

NOTE: Check connectors - Clean and repair as necessary.

3. Connect the Load Tool ORC 8443-25 Adaptor to the ORC connectors.
4. Measure the resistance of the (R58) Passenger Seat Belt Switch Sense circuit between the Passenger Seat Belt Switch connector cavity 1 and ground.

Is the resistance below 10K ohms?

Yes

- Repair the (R58) Passenger Seat Belt Switch Sense circuit for a short to ground.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

No

- Go To 3

3. VERIFY PASSENGER SEAT BELT SWITCH CIRCUITS SHORTED TOGETHER
1. Measure the resistance between the (R58) Passenger Seat Belt Switch Sense circuit cavity 1 and the (R60) Passenger Seat Belt Switch Ground circuit cavity 2 at the Passenger Seat Belt Switch connector.

Is the resistance below 10K ohms?

Yes

- Repair the (R58) Passenger Seat Belt Switch Sense circuit for a short to the (R60) Passenger Seat Belt Switch Ground circuit.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

No

- Go To 4

4. CHECK OPERATION OF THE 1st ROW PASSENGER SEAT BELT SWITCH
1. Replace the Passenger 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. 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: PASSENGER SEAT BELT SWITCH CIRCUIT SHORTED TOGETHER DTC return?

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 Occupant Restraint Controller.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

No

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