B1B93 Passanger Seat Track Position Sensor Circuit Low

B1B93 code - 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 adafter tool in the tests below provides a test point in place of the module.

B1B93 code
While the CAN bus ignition is in RUN and the module is configured for a passenger seat track position sensor, the module checks the sensor input current ranges. If the module detects that the sensor input 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.

Possible causes B1B93 code

- Passenger seat harness improperly routed
- Passenger seat harness wires chafed, pierced, pinched, partially broken
- Passenger seat harness connector terminals broken, bent, pushed out, spread, corroded, contaminated
- Passenger seat position sensor data circuit shorted to the passenger seat position sensor voltage circuit
- Passenger seat position sensor voltage circuit shorted to ground
- Passenger seat track position sensor
- Occupant Restraint Controller (ORC)

Diagnostic test B1B93 code

Step 1. Identifying vehicle equipment

Make sure the battery is fully charged.
Turn the ignition on, using the scan tool read ORC active DTCs.

Does the scan tool display DTC B1B93 PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT LOW?

Yes, go to step 2.
No, perform the Airbag intermittent.

Step 2. Check for active internal faults, ignition faults, and battery faults in the Occupant Restraint Controller (ORC)

Using 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, perform the appropriate diagnostic procedure.
No, go to step 3.

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, soread, corroded, or contaminated terminals.

Are any of these conditions present?

Yes, 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 passenger seat harness.

No, go to step 4.

Step 4. Verify that 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 step 5.
No, route the passenger seat harness as necessary.

Step 5. Check passenger seat position sensor voltage circuit for a short to ground

Disconnect the ORC harness connectors, measure the resistance between ground and passenger seat position sensor voltage circuit.

Is the resistance below 10k Ohms?

Yes, 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 passenger seat harness.

No, go to step 6.

Step 6. Check the passenger seat position sensor data circuit for a short to the passenger seat position sensor voltage circuit

Measure the resistance between the passenger seat position sensor data circuit and the passenger seat position sensor voltage circuit.

Is the resistance below 10k Ohms?

Yes 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 passanger seat harness.

No, go to step 7.

Step 7. Check operation of the passenger seat track position sensor

Replace the passenger seat track position sensor. Reconnect the vehicle body harness to the passenger seat track position sensor. Remove any special tools or jumper wires and reconnect all previously disconnected component - except the battery.

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.

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

Did the active passenger seat track position sensor DTC return?

Yes, 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 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).

No, repair is complete.

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