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HOMESERVICE MANUALSDODGE AND RAM2005MAGNUM R/T, AWDREPAIR AND DIAGNOSISBODY & FRAMESEATSPOWER SEAT SYSTEM - ELECTRICAL DIAGNOSTICSDTC TROUBLESHOOTINGB1D71 - SEAT FRONT VERTICAL POSITION SENSOR CIRCUIT LOWDIAGNOSTIC TEST
2005 Dodge and Ram Magnum R/T, AWD

Diagnostic Test

2005 Dodge and Ram Magnum R/T, AWDSECTION Diagnostic Test
  1. 1)  TEST FOR INTERMITTENT CONDITION 

    Turn the ignition on.

    With the scan tool, record and erase DTC's

    Move the Seat Switch in the Front Vertical position 3 times.

    With the scan tool, read DTC's.

    Does the scan tool display B1D71 - SEAT FRONT VERTICAL POSITION SENSOR CIRCUIT LOW? 

    Yes 

    1. Go To step  2).

    No 

    1. The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
    2. Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1 .
  2. 2)  CHECK THE (G404) DRIVER SEAT FRONT VERTICAL POSITION SENSE VOLTAGE 
    Fig 1: Checking Driver Seat Front Vertical Position Sense For Voltage
    GC0016353Courtesy of DAIMLERCHRYSLER CORP.

    Disconnect the Front Driver Vertical Seat Adjuster Motor.

    NOTE: Check connectors - Clean and repair as necessary.

    Move the seat switch in the front vertical position during the next step.

    Using a 12-volt test light connect one lead to the (G404) Driver Seat Front Vertical Position Sense circuit and the other lead to the Driver Seat Front Vertical Sensor Ground at the Front Driver Seat Adjuster Motor connector.

    Does the test light illuminate for approximately 2 seconds then turn off with the seat switch engaged? 

    Yes 

    1. Replace the Front Driver Seat Adjuster Motor assembly.
    2. Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1 .

    No 

    1. Go To step  3).
  3. 3)  CHECK THE (G404) DRIVER SEAT FRONT VERTICAL POSITION SENSE WIRE FOR A SHORT TO GROUND 
    Fig 2: Checking Driver Seat Front Vertical Position Sense Wire For Short To Ground
    GC0016354Courtesy of DAIMLERCHRYSLER CORP.

    Disconnect the Memory Seat Module C3 connector.

    NOTE: Check connectors - Clean and repair as necessary.

    Measure the resistance of the (G404) Driver Seat Front Vertical Position Sense wire at the Front Driver Vertical Seat Adjuster Motor connector to ground.

    Is the resistance below 1000.0 ohm? 

    Yes 

    1. Repair the (G404) Driver Seat Front Vertical Position Sense circuit for a short to ground.
    2. Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1 .

    No 

    1. Replace the Memory Seat Module.
    2. Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1 .
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.