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B1B8E







B1B8E-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT HIGH

For a complete wiring diagram REFER to DIAGRAMS/ELECTRICAL .

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 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 the seat track position sensor circuits have become shorted to voltage for more than 2.5 seconds, or 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.Restraints System Pre-Diagnostic Procedure.


Diagnostic Test


1. DETERMINE ACTIVE OR STORED DTC
NOTE: Ensure the battery is fully charged.

Turn the ignition on.
Perform ORC module reset.
With the scan tool, read ORC DTC's.
Is the DTC active or stored?

ORC - ACTIVE DTC


- Go To 2


ORC - STORED DTC


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


2. CHECK FOR ADDITIONAL ACTIVE SENSOR DTCS
Turn the ignition on.
With the scan tool, read all active ORC DTCs.
Are DTCs B1B55-1st ROW PASSENGER SEAT BELT SENSOR CIRCUIT HIGH and B1B94-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT HIGH active?

Yes


- Repair the (Z908) Ground circuit for an open.
- Perform *RESTRAINTS SYSTEM VERIFICATION TEST.Restraints System Verification Test


No


- Go To 3


3. INSPECT DRIVER SEAT HARNESS WIRES AND CONNECTORS
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

Using the wiring diagram/schematic as a guide, inspect the Driver 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 Driver Seat Harness.
- Perform *RESTRAINTS SYSTEM VERIFICATION TEST.Restraints System Verification Test


No


- Go To 4


4. VERIFY THAT THE DRIVER SEAT HARNESS IS ROUTED CORRECTLY
Verify that the Driver Seat Harness is routed correctly.
Is the Driver Seat Harness routed correctly?

Yes


- Go To 5


No


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


5. (R263) DRIVER SEAT POSITION SENSOR VOLTAGE CIRCUIT SHORTED TO VOLTAGE

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

Disconnect the Driver Seat Track Position Sensor connector.
Disconnect the ORC connector.

NOTE: Check connectors - Clean and repair as necessary.

Connect the Load Tool 8443 ORC Adaptor to the ORC connectors.

WARNING: To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.

Measure the voltage of the (R263) Seat Position Sensor Voltage-Driver circuit between the Load Tool 8443 ORC adaptor and ground.
Is there any voltage present on the circuit?

Yes


- Repair or replace the (R263) Driver Seat Position Sensor Voltage circuit for a short to voltage.
- Perform *RESTRAINTS SYSTEM VERIFICATION TEST.Restraints System Verification Test


No


- Go To 6


6. (R261) DRIVER SEAT POSITION SENSOR DATA CIRCUIT SHORTED TO VOLTAGE
Measure the voltage of the (R261) Driver Seat Position Sensor Data circuit between the Load Tool 8443 ORC Adaptor and ground.
Is there any voltage present on the circuit?

Yes

WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Repair or replace the (R261) Driver Seat Position Sensor Data circuit for a short to battery.
- Perform *RESTRAINTS SYSTEM VERIFICATION TEST.Restraints System Verification Test


No


- Go To 7


7. (R261) DRIVER SEAT POSITION SENSOR DATA CIRCUIT OPEN

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

Measure the resistance of the (R261) Driver Seat Position Sensor Data circuit between the Driver Seat Track Position Sensor connector and the Load Tool 8443 ORC Adaptor.
Is the resistance below 1.0 ohm?

Yes


- Go to 8


No


- Repair or replace the (R261) Driver Seat Position Sensor Data circuit for an open.
- Perform *RESTRAINTS SYSTEM VERIFICATION TEST.Restraints System Verification Test


8. (R263) DRIVER SEAT POSITION SENSOR VOLTAGE CIRCUIT OPEN
Measure the resistance of the (R263) Driver Seat Position Sensor Voltage circuit between the Driver Seat Track Position Sensor connector and the 8443 ORC Adaptor.
Is the resistance below 1.0 ohm?

Yes


- Go to 9


No


- Repair or replace the (R263) Driver Seat Position Sensor Voltage circuit for an open.
- Perform *RESTRAINTS SYSTEM VERIFICATION TEST.Restraints System Verification Test


9. (R262) PASSENGER SEAT TRACK POSITION SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

Disconnect the ORC connectors.
Disconnect the Seat Track Position Sensor connector.

WARNING: To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.

Measure the voltage of the (R262) Passenger Seat Track Position Sensor Signal circuit.
Is the voltage above 0.2 volts on either circuit?

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 *RESTRAINTS SYSTEM VERIFICATION TEST.Restraints System Verification Test


No


- Go To 10


10. (R60) PASSENGER SEAT BELT SWITCH RETURN SHORTED TO VOLTAGE
Measure the voltage of the (R60) Passenger Seat Belt Switch Return circuit.
Is the voltage above 0.2 volts on either circuit?

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 *RESTRAINTS SYSTEM VERIFICATION TEST.Restraints System Verification Test


No


- Go To 11


11. CHECK OPERATION OF THE DRIVER SEAT TRACK POSITION SENSOR

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

Replace the Driver Seat Track Position Sensor.
Reconnect the vehicle body harness to the sensor.

WARNING: To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.

Use the scan tool and erase all codes in the ORC.
Turn the Ignition Off, and wait 15 seconds before turning the Ignition On.
Wait one minute, and read active codes.
Did the active B1B8E-DRIVER 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 and serious or fatal injury.


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

- Replace the ORC.
- Perform *RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.


No


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

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