B1B96

B1B96-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT SHORTED TOGETHER







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 Supplemental Restraints System (SRS) Load Tool Adapter in the tests below provides a test point in place of the module.

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

- Set Condition:
If the module detects that the sensor current is shorted together with a value above I ≥ 17.1 ~ 20.5 mA, or shorted to ground with a value of < 5 k Ohm.





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

1. CHECK FOR ACTIVE INTERNAL FAULTS, IGNITION FAULTS, AND BATTERY FAULTS IN THE OCCUPANT RESTRAINT CONTROLLER (ORC)

NOTE: Make sure the battery is fully charged.

1. Turn the ignition on.
2. With the scan tool, read Occupant Restraint Controller (ORC) DTCs.

Does the scan tool display any active DTCs relating to internal faults, ignition faults, or battery faults?

Yes

- Diagnose and repair the DTCs.

No

- Go To 2

2. VERIFY DTC B1B96-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT SHORTED TOGETHER IS ACTIVE
1. With the scan tool, read Occupant Restraint Controller (ORC) DTCs.

Does the scan tool display active: B1B96-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT SHORTED TOGETHER?

Yes

- Go To 3

No

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

3. INSPECT THE 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 4

4. 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 5

No

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

5. CHECK FOR DTC B1B96-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT SHORTED TOGETHER WITH PASSENGER SEAT TRACK POSITION SENSOR DISCONNECTED
1. Disconnect the Passenger Seat Track Position Sensor connector.

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.

2. Wait two minutes, and then with the scan tool read ORC DTCs.

Does the scan tool display: B1B96-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT SHORTED TOGETHER?

Yes

- Go To 6

No

- 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 Passenger Seat Track Position Sensor.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

6. CHECK (R264) PASSENGER SEAT POSITION SENSOR VOLTAGE 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 ORC connectors.

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

2. Connect the SRS Load Tool Adapter 8443-28 to the ORC harness connectors.
3. Measure the resistance of the (R264) Passenger Seat Position Sensor Voltage circuit between ground and the SRS Load Tool Adapter 8443-28.

Is the resistance below 6k Ohms?

Yes

- 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 (R264) Passenger Seat Position Sensor Voltage circuit for a short to ground.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

No

- Go To 7

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




1. Measure the resistance between the (R262) Passenger Seat Position Sensor Data circuit and the (R264) Passenger Seat Position Sensor Voltage circuit at the SRS Load Tool Adapter 8443-28.

Is the resistance below 5k Ohms?

Yes

- 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 (R262) Passenger Seat Position Sensor Data circuit for a short to the (R264) Passenger Seat Position Sensor Voltage circuit.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

No

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