B1B56-1ST ROW PASSENGER SEAT BELT SENSOR CIRCUIT HIGH
 |
For a complete wiring diagram, refer to the Wiring Information.
Theory of Operation
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.
-
When Monitored:
The ORC monitors the status of the seat belt switch circuits at power up and every 100 ms thereafter while the ignition is in on.
-
Set Condition:
This DTC sets when the ORC detects the seat belt switch circuits have become shorted to voltage for more than 2.5 seconds. This DTC transitions from active to stored when the module sees a recovery from the shorted to voltage condition for greater than five seconds.
Possible Causes |
|---|
| (R58) PASSENGER SEAT BELT SWITCH SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| (R60) PASSENGER SEAT BELT SWITCH GROUND CIRCUIT SHORTED TO VOLTAGE |
| (R58) PASSENGER SEAT BELT SWITCH SIGNAL CIRCUIT OPEN |
| (R60) PASSENGER SEAT BELT SWITCH GROUND CIRCUIT OPEN |
| PASSENGER SEAT BELT SWITCH |
| OCCUPANT RESTRAINT CONTROLLER (ORC) |
| NOTE: | Make sure the battery is fully charged. |
| 1. | Turn the ignition on. |
| 2. | With the scan tool, read all ORC DTCs. |
Does the scan tool display active B1B55-1ST ROW PASSENGER SEAT BELT SENSOR CIRCUIT HIGH?
Yes
- Go To 2
No
- Perform the AIRBAG SYSTEM INTERMITTENT TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).
2. CHECK THE (R58) PASSENGER SEAT BELT SWITCH SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
 |
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:
| 1. | Disconnect the Passenger Seat Belt Buckle Tensioner harness connector containing the Seat Belt Switch circuits. |
| 2. | Disconnect the ORC harness connector. |
| NOTE: | Check connectors - Clean and repair as necessary. |
| 3. | Connect the SRS Load Tool Adapter 8443-32-R or 8443-32-L to the ORC harness connectors. |
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.
WARNING:
| 4. | Measure the voltage of the (R58) Passenger Seat Belt Switch Signal circuit between the appropriate terminal of the SRS Load Tool Adapter 8443-32-L or 8443-32-R and ground. |
Is there any voltage present on the circuit?
Yes
-
Repair the (R58) Passenger Seat Belt Switch Signal circuit for a short to voltage.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.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).
No
-
Go To 3
3. (R60) PASSENGER SEAT BELT SWITCH GROUND CIRCUIT SHORTED TO VOLTAGE
 |
| 1. | Measure the voltage of the (R60) Passenger Seat Belt Switch Ground circuit between the appropriate terminal of the SRS Load Tool Adapter 8443-32-L or 8443-32-R and ground. |
Is there any voltage present on the circuit?
Yes
-
Repair or replace the (R60) Passenger Seat Belt Switch Ground circuit for a short to voltage.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.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).
No
-
Go To 4
4. (R58) PASSENGER SEAT BELT SWITCH SIGNAL CIRCUIT FOR AN OPEN
 |
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:
| 1. | Measure the resistance of the (R58) Passenger Seat Belt Switch Signal circuit between the Passenger Seat Belt Buckle Tensioner connector and the appropriate terminal of the SRS Load Tool Adapter 8443-32-L or the 8443-32-R . |
Is the resistance below 1.0 Ohm?
Yes
- Go To 5
No
- Repair or replace the (R58) Passenger Seat Belt Switch Signal circuit for an open or high resistance.
-
Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC)
- Standard Procedure).
5. (R60) PASSENGER SEAT BELT SWITCH GROUND CIRCUIT FOR AN OPEN
 |
| 1. | Measure the resistance of the (R60) Passenger Seat Belt Switch Ground circuit between the Passenger Seat Belt Buckle Tensioner connector and the appropriate terminal of the SRS Load Tool Adapter 8443-32-L or the 8443-32-R . |
Is the resistance below 1.0 Ohm?
Yes
- Go To 6
No
- Repair or replace the (R60) Passenger Seat Belt Switch Ground circuit for an open or high resistance.
-
Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC)
- Standard Procedure).
6. CHECK OPERATION OF THE 1st ROW PASSENGER SEAT BELT SWITCH
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:
| 1. | Replace the Passenger Seat Belt Switch in accordance with the Service Information. |
| 2. | Reconnect the vehicle body harness to the switch. |
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.
WARNING:
| 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. | Turn the ignition off, and wait 15 seconds before turning the Ignition On. |
| 6. | Wait one minute, and read active codes. |
Did the active B1B56-1st ROW PASSENGER SEAT BELT SENSOR CIRCUIT OPEN 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 in accordance with the Service Information.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).
No
- Repair is complete.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).