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B1B8D






B1B8D-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT LOW







- When Monitored:
While the CAN bus ignition status is in IGN_RUN and the module is configured for a Driver Seat Track Position Sensor, the module checks the sensor input current ranges.

- Set Condition:
If the module detects that the sensor input is less than or equal to 0.3 of a mA. This DTC may set when the current is between 0.3 mA and 2.0 mA.





1. IDENTIFYING VEHICLE EQUIPMENT

NOTE: Make sure the battery is fully charged.

1. Turn the ignition on.
2. With the scan tool, read ORC active DTCs.

Does the scan tool display active DTC: B1B8D-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT LOW?

Yes

- Go To 2

No

- Perform the AIRBAG SYSTEM INTERMITTENT TEST. Initial Inspection and Diagnostic Overview.

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

- Testing and Inspection Perform the appropriate diagnostic.

No

- Go To 3

3. INSPECT DRIVER 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 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 the condition inspecting or testing for is present in the Seat Harness.

- Replace the driver seat harness.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. Airbag System Verification Test.

No

- Go To 4

4. VERIFY THAT DRIVER SEAT HARNESS IS ROUTED CORRECTLY
1. 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 the AIRBAG SYSTEM VERIFICATION TEST. Airbag System Verification Test.

5. CHECK (R263) DRIVER SEAT POSITION SENSOR VOLTAGE CIRCUIT FOR A SHORT TO GROUND




1. Disconnect the ORC connectors.
2. Connect the SRS Load Tool Adaptor 8443-25 to the ORC C2 connector.
3. Measure the resistance between ground and the (R263) Driver Seat Position Sensor Voltage circuit cavity 2.

Is the resistance below 10k Ohms?

Yes

- NOTE: Do not attempt to repair the Seat Harness. Replace the Seat Harness if the condition inspecting or testing for is present in the Seat Harness.

- Replace the Driver Seat Harness.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. Airbag System Verification Test.

No

- Go To 6

6. CHECK (R261) DRIVER SEAT POSITION SENSOR DATA CIRCUIT FOR A SHORT TO THE (R263) DRIVER SEAT POSITION SENSOR VOLTAGE CIRCUIT




1. Measure the resistance between the (R261) Driver Seat Position Sensor Data circuit cavity 1 and the (R263) Driver Seat Position Sensor Voltage circuit cavity 2.

Is the resistance below 10k Ohms?

Yes

- NOTE: Do not attempt to repair the Seat Harness. Replace the Seat Harness if the condition inspecting or testing for is present in the Seat Harness.

- Replace the Driver Seat Harness.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. Airbag System Verification Test.

No

- Go To 7

7. CHECK OPERATION OF THE DRIVER SEAT TRACK POSITION SENSOR
1. Replace the Driver Seat Track Position Sensor.
2. Reconnect the vehicle body harness to the Driver Seat Track Position sensor.
3. Remove any special tools or jumper wires and reconnect all previously disconnected components - except the Battery.

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.

4. Connect the scan tool to the Data Link Connector - use the most current software available.
5. Use the scan tool and erase the stored codes in all airbag system modules.
6. Turn the Ignition Off, and wait 15 seconds before turning the Ignition On.
7. Wait one minute, and read active codes and if there are none present read the stored codes.

Did the active Driver Seat Track Position Sensor DTC return?

Yes

- WARNING: If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. 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 Occupant Restraint Controller (ORC ).
- Perform the AIRBAG SYSTEM VERIFICATION TEST. Airbag System Verification Test.

No

- Repair is complete.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. Airbag System Verification Test.

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