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B1B94






B1B94 - Passenger Seat Track Position Sensor Circuit High






For a complete wiring diagram, refer to.

Theory of Operation

When powered, the occupant restraint controller sends a test current to the seat track position sensors to verify the integrity of the sensor 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 track position sensor circuits continuously.

• Set Condition: This DTC sets when the ORC detects a short to voltage on the seat track position sensor circuits for more than 2.5 seconds or if current is below threshold. This DTC transitions from active to stored when the module sees a recovery from the shorted to voltage condition for greater than 5 seconds.






Always perform the Pre - Diagnostic Troubleshooting procedure before proceeding.

Test Step 1 - Determine Active or Stored DTC

• Ensure the battery is fully charged.

• Turn the ignition ON.

• Perform ORC module reset. Access the miscellaneous function menu from the ORC ECU Overview screen on the scan tool to perform this operation.

• With the scan tool, read ORC DTCs.

Is the DTC active or stored?

ORC - Active DTC

• Go to Test Step 2 => [ Test Step 2 - Check for Additional Active Sensor DTCs ]

ORC - Stored DTC

• Perform the Restraints System Intermittent Test. Refer to => Non - DTC Based Diagnostics. ORC Restraints System Intermittent Test

Test Step 2 - Check for Additional Active Sensor DTCs

• With the scan tool, read all active ORC DTCs.

Are DTCs B1B55 - 1st Row Passenger Seat Belt Sensor Circuit High and B1B8E - Driver Seat Track Position Sensor Circuit High active?

Yes

• Repair the ground circuit for an open.

• Perform the Restraints System Intermittent Test. Refer to => Non - DTC Based Diagnostics. ORC Restraints System Intermittent Test

No

• Go to Test Step 3 => [ Test Step 3 - Inspect Passenger Seat Harness Wires and Connectors ]

Test Step 3 - Inspect Passenger Seat Harness Wires and Connectors


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.

• 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

• Replace the passenger seat harness.

• Perform the Restraints System Intermittent Test. Refer to => Non - DTC Based Diagnostics. ORC Restraints System Intermittent Test

• Do not attempt to repair the seat harness. Replace the seat harness if any of these conditions exist.

No

• Go to Test Step 4 => [ Test Step 4 - Verify that the Passenger Seat Harness is Routed Correctly ]

Test Step 4 - Verify that the Passenger Seat Harness is Routed Correctly

• Verify that the passenger seat harness is routed correctly.

Is the passenger seat harness routed correctly?

Yes

• Go to Test Step 5 => [ Test Step 5 - Check Passenger Seat Track Position Sensor Signal Circuit,
Passenger Seat Track Position Sensor Supply Circuit, and Passenger
Seat Belt Switch Return Circuit for a Short to Voltage ]

No

• Reroute the passenger seat harness as necessary.

• Perform the Restraints System Intermittent Test. Refer to => Non - DTC Based Diagnostics. ORC Restraints System Intermittent Test

Test Step 5 - Check Passenger Seat Track Position Sensor Signal Circuit, Passenger Seat Track Position Sensor Supply Circuit, and Passenger Seat Belt Switch Return Circuit for a Short to Voltage






• Disconnect the passenger seat track position sensor connector.

• Disconnect the ORC connectors.

• Check connectors - Clean and repair as necessary.

• Connect the load tool 8443 ORC adaptor to the ORC 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.

• Measure the voltage of the passenger seat track position sensor signal circuit between the load tool 8443 ORC adaptor and ground.

• Measure the voltage of the passenger seat track position sensor supply circuit between the load tool 8443 ORC adaptor and ground.

• Measure the voltage of the passenger seat belt switch return circuit between the load tool 8443 ORC adaptor and ground.

Is there any voltage present on any circuit?

Yes

• Repair or replace the circuit with voltage present for a short to voltage.

• Perform the Restraints System Intermittent Test. Refer to => Non - DTC Based Diagnostics. ORC Restraints System Intermittent Test


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.

• If the short is found in the seat harness, do not attempt to repair the seat harness. Replace the seat harness.

No

• Go to Test Step 6 => [ Test Step 6 - Check Passenger Seat Track Position Sensor Signal Circuit
for an Open ]

Test Step 6 - Check Passenger Seat Track Position Sensor 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.

• Measure the resistance of the passenger seat track position sensor signal circuit between the passenger seat track position sensor connector and the load tool 8443 ORC adaptor.

Is the resistance below 1.0 ohm?

Yes

• Go to Test Step 7 => [ Test Step 7 - Check Passenger Seat Track Position Sensor Supply Circuit
for an Open ]

No

• Repair the passenger seat track position sensor signal circuit for an open.

• Perform the Restraints System Intermittent Test. Refer to => Non - DTC Based Diagnostics. ORC Restraints System Intermittent Test

• If the open is found in the seat harness, do not attempt to repair the seat harness. Replace the seat harness.

Test Step 7 - Check Passenger Seat Track Position Sensor Supply Circuit for an Open






• Measure the resistance of the passenger seat track position sensor supply circuit between passenger seat track position sensor connector and the load tool 8443 ORC adaptor.

Is the resistance below 1.0 ohm?

Yes

• Go to Test Step 8 => [ Test Step 8 - Check Driver Seat Position Sensor Data Circuit for
a Short to Voltage ]

No

• Repair the passenger seat track position sensor supply circuit for an open.

• Perform the Restraints System Intermittent Test. Refer to => Non - DTC Based Diagnostics. ORC Restraints System Intermittent Test

• If the open is found in the seat harness, do not attempt to repair the seat harness. Replace the seat harness.

Test Step 8 - Check Driver Seat Position Sensor Data Circuit for a Short to Voltage







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.

• Measure the voltage of the driver seat position sensor data circuit between the load tool 8443 ORC adaptor and ground.

Is there any voltage present on the circuit?

Yes

• Repair or replace the driver seat position sensor data circuit for a short to voltage

• Perform the Restraints System Intermittent Test. Refer to => Non - DTC Based Diagnostics. ORC Restraints System Intermittent Test


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.

• If the short is found in the seat harness, do not attempt to repair the seat harness. Replace the seat harness.

No

• Go to Test Step 9 => [ Test Step 9 - Check Operation of the Passenger Seat Track Position
Sensor ]

Test Step 9 - Check Operation of the Passenger Seat Track Position Sensor


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 passenger seat track position sensor.

• Reconnect the vehicle body harness to the sensor.

• Reconnect the ORC 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.

• Use the scan tool and erase all codes in the ORC.

• Perform ORC module reset. Access the miscellaneous function menu from the ORC ECU overview screen on the scan tool to perform this operation.

• Wait one minute, and read active codes.

Did the active B1B94 - Passenger Seat Track Position Sensor Circuit High DTC return?

Yes

• Replace the ORC.

• Perform the Restraints System Intermittent Test. Refer to => Non - DTC Based Diagnostics. ORC Restraints System Intermittent Test


If the occupant restraint controller 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.


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.

No

• Repair is complete.

• Perform the Restraints System Intermittent Test. Refer to => Non - DTC Based Diagnostics. ORC Restraints System Intermittent Test

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