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B1B94






B1B94-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT HIGH

Special Tools:










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 seat track position sensors to verify the integrity of the sensor and wiring. The use of the (8443-28) in the tests below provides a test point in place of the module.

- When Monitored:
The ORC monitors the status of the seat track position sensor circuits at power up and every 60 ms thereafter while the ignition is in on.

- Set Condition:
This DTC sets when the ORC detects the seat track position sensor circuits have become shorted to voltage or open circuit 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.





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. Perform ORC module reset. Access the Miscellaneous Function or Diagnostic Procedures menu from the ORC ECU Overview screen on the scan tool to perform this operation.
3. With the scan tool, read 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. INSPECT PASSENGER SEAT HARNESS WIRES AND CONNECTORS

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. Using the wiring diagram/schematic as a guide, inspect the Passenger Seat Harness wiring and connectors. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.

Are any of these conditions present?

Yes

- NOTE: Do not attempt to repair the Seat Harness. Replace the Seat Harness if any of these conditions exist.

- Replace the Passenger Seat Harness.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

No

- Go To 3

3. VERIFY THAT THE PASSENGER SEAT HARNESS IS ROUTED CORRECTLY
1. Verify that the Passenger Seat Harness is routed correctly.

Is the Passenger Seat Harness routed correctly?

Yes

- Go To 4

No

- Reroute the Passenger Seat Harness as necessary.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

4. CHECK (R262) PASSENGER SEAT POSITION SENSOR DATA CIRCUIT AND (R264) PASSENGER SEAT POSITION SENSOR VOLTAGE CIRCUIT FOR A SHORT TO VOLTAGE




1. Disconnect the Passenger Seat Track Position Sensor harness connector.
2. Disconnect the ORC harness connectors.

NOTE: Check the connectors - Clean and repair as necessary.

3. Connect the (8443-28) to 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.

4. Measure the voltage of the (R262) Passenger Seat Position Sensor Data circuit between the appropriate terminal of the (8443-28) and ground.
5. Measure the voltage of the (R264) Passenger Seat Position Sensor Voltage circuit between the appropriate terminal of the (8443-28) and ground.

Is there any voltage present on either circuit?

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.
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 circuit with voltage present for a short to voltage.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

No

- Go To 5

5. CHECK (R262) PASSENGER SEAT POSITION SENSOR DATA CIRCUIT FOR AN OPEN





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. Measure the resistance of the (R262) Passenger Seat Position Sensor Data circuit between the Passenger Seat Track Position Sensor connector and the appropriate terminal of the (8443-28).

Is the resistance below 1.0 Ohm?

Yes

- Go To 6

No

- NOTE: If the open is found in the Seat Harness, do not attempt to repair the Seat Harness. Replace the Seat Harness.
- Repair or replace the (R262) Passenger Seat Position Sensor Data circuit for an open.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

6. CHECK (R264) PASSENGER SEAT POSITION SENSOR VOLTAGE CIRCUIT FOR AN OPEN




1. Measure the resistance of the (R264) Passenger Seat Position Sensor Voltage circuit between the Passenger Seat Track Position Sensor connector and the appropriate terminal of the (8443-28).

Is the resistance below 1.0 Ohm?

Yes

- Go To 7

No

- NOTE: If the open is found in the Seat Harness, do not attempt to repair the Seat Harness. Replace the Seat Harness.
- Repair or replace the (R264) Passenger Seat Position Sensor Voltage circuit for an open.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

7. CHECK (R261) DRIVER SEAT POSITION SENSOR DATA CIRCUIT FOR A SHORT TO VOLTAGE



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.

1. Measure the voltage of the (R261) Driver Seat Position Sensor Data circuit between the appropriate terminal of the (8443-28) and ground.

Is there any voltage present on the circuit?

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.
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 (R261) Driver Seat Position Sensor Data circuit for a short to voltage.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

No

- Go To 8

8. CHECK OPERATION OF THE PASSENGER SEAT TRACK POSITION SENSOR

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. Replace the Passenger Seat Track Position Sensor. Seat Track Position Sensor - Removal.
2. Reconnect the vehicle body harness to the sensor.
3. 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.

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 B1B94-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT HIGH 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.

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