B1B8D
B1B8D-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT LOW
For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.
- When Monitored:
While the CAN bus ignition status is in IGN_RUN and the module is configured for a 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 mA. This DTC may set when the current is between 0.3 mA and 2.0 mA.
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. 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 THAT DTC B1B8D-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT LOW IS ACTIVE
Does the scan tool display active: B1B8D-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT LOW?
Yes
- Go To 3
No
- Go To 7
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 ORC VERIFICATION TEST. Occupant Restraint Controller (ORC) 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 ORC VERIFICATION TEST. Occupant Restraint Controller (ORC) Verification Test.
5. CHECK (R261) DRIVER SEAT POSITION SENSOR DATA CIRCUIT AND (R263) DRIVER SEAT POSITION SENSOR VOLTAGE CIRCUIT FOR A SHORT TO GROUND
1. Measure the resistance between ground and the (R261) Driver Seat Position Sensor Data circuit.
2. Measure the resistance between ground and the (R263) Driver Seat Position Sensor Voltage circuit.
Is the resistance below 10K Ohms on either circuit?
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 ORC VERIFICATION TEST. Occupant Restraint Controller (ORC) Verification Test.
No
- Go To 6
6. CHECK (R261) DRIVER SEAT POSITION SENSOR DATA CIRCUIT AND (R263) DRIVER SEAT POSITION SENSOR VOLTAGE CIRCUIT FOR AN OPEN
1. Disconnect the ORC connectors.
2. Connect the Load Tool ORC Adaptor 8443-24 to the ORC C1 harness connector.
3. Measure the resistance of the (R261) Driver Seat Position Sensor Data circuit between the ORC-C1 connector and the Driver Seat Track Position Sensor connector.
4. Measure the resistance of the (R263) Driver Seat Position Sensor Voltage circuit between the ORC-C1 connector and the Driver Seat Track Position Sensor connector.
Is the resistance of either circuit above 5.0 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 ORC VERIFICATION TEST. Occupant Restraint Controller (ORC) Verification Test.
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.
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.
- Replace the Occupant Restraint Controller (ORC ).
- Perform the ORC VERIFICATION TEST. Occupant Restraint Controller (ORC) Verification Test.
7. TEST FOR AN INTERMITTENT CONDITION
1. With the scan tool, record and erase all DTCs from the ORC.
2. If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.
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.
3. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
4. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
5. The following additional checks may assist you in identifying a possible intermittent problem.
6. Reconnect any disconnected components and harness 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.
7. With the scan tool monitor active codes as you work through the following steps.
WARNING: Maintain a safe distance from all airbags while performing the following steps. Failure to follow these instructions may result in possible serious or fatal injury.
8. Wiggle the wiring harness and connectors of the related airbag circuit or component.
9. If only stored codes return continue the test until the problem area has been isolated.
10. In the previous steps you have attempted to recreate the conditions responsible for setting active DTC in question.
Are any ACTIVE DTCs present?
Yes
- Select the appropriate diagnostic from the Diagnostic List. Testing and Inspection.
No
- No problem found at this time. Erase all codes before returning vehicle to customer.