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Home >> Fiat >> 2016 >> 500 Turbo, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Occupant Restraint Controller (Orc) - DTCS B0118-95 To U0127-00 - 500 - Electric) >> DTC Troubleshooting >> B0129-11-Passenger Seat Track Position Sensor - Circuit Short To Ground >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  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: B0129-11-FRONT DRIVER SEAT TRACK POSITION SENSOR - CIRCUIT SHORT TO GROUND?

      Yes 

      • Go To  2

      No 

  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 

      • Refer to DTC INDEX and perform the appropriate diagnostic procedure.

      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.

      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 

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

      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.

      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 harness connectors.
      NOTE:

      Check connectors - Clean and repair as necessary.

      NOTE:

      Probing of the circuit cavities at the ORC Module body harness connectors is only to be done with a approved test lead from the (special tool #10159, Test Leads, Dedicated), test lead 10159-6. Or a comparable test lead to prevent vehicle wiring harness connector damage during diagnostic procedures.

    2. Connect the test probes to the appropriate ORC harness connector terminal(s).
    3. Measure the resistance of the (R261) Driver Seat Position Sensor Data circuit between the SRS Load Tool appropriate cavity and the Driver Seat Track Position Sensor harness connector cavity 1.
    4. Measure the resistance of the (R263) Driver Seat Position Sensor Voltage circuit between the SRS Load Tool appropriate cavity and the Driver Seat Track Position Sensor harness connector cavity 2.

      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.

      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 take the proper precautions can result in accidental airbag deployment. Failure to follow these instructions may result in possible serious or fatal injury.