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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> Body & Frame >> Seats >> Memory Seat Module (MSMD) - Electrical Diagnostics >> DTC Troubleshooting >> B1D7F-Seat Front Vertical Motor Control Circuit Performance >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR RELATED DIAGNOSTIC TROUBLE CODES 
    1. Turn the ignition on.
    2. With the scan tool, read DTCs.

      Does the scan tool display any seat position sensor DTCs?

      Yes 

      No 

      • Go to Step  2.
  2. TEST FOR INTERMITTENT CONDITION 
    1. Turn the ignition on.
    2. With the scan tool, record and erase DTCs.
    3. Move the Seat Switch in the Front Vertical position three times.
    4. With the scan tool, read DTCs.

      Does the scan tool display B1D7F-SEAT FRONT VERTICAL MOTOR CONTROL CIRCUIT PERFORMANCE?

      Yes 

      • Go to Step  3.

      No 

      • The conditions that caused this code to set are not present at this time. Using Figure as a guide, inspect the wiring and connectors.
      • Perform POWER SEAT SYSTEM VERIFICATION TEST. See POWER SEAT SYSTEM VERIFICATION TEST .
  3. CHECK THE (G404) DRIVER SEAT FRONT VERTICAL POSITION SENSE VOLTAGE 
    Fig 1: Checking For Voltage In Driver Seat Front Vertical Position Sense Circuit Using 12V Test Light
    GC0097021Courtesy of CHRYSLER LLC
    1. Disconnect the Front Driver Vertical Seat Adjuster Motor.
      NOTE: Check connectors - Clean and repair as necessary.
    2. Move the Seat Switch in the front vertical position during the next step.
    3. Using a 12-volt test light connect one lead to the (G404) Driver Seat Front Vertical Position Sense circuit and the other lead to Driver Seat Front Vertical Sensor Ground at the Driver Front Vertical Seat Adjuster Motor connector.

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

      Yes 

      • Go to Step  4.

      No 

      • Go to Step  5.
  4. CHECK THE DRIVER SEAT FRONT VERTICAL UP/DOWN DRIVER VOLTAGE 
    Fig 2: Checking For Voltage In Driver Seat Front Vertical Up/Down Driver Circuit Using 12V Test Light
    GC0097039Courtesy of CHRYSLER LLC
    1. Move the Seat Switch in the front vertical position during the next step.
    2. Using a 12-volt test light connect one lead to the (G119) Driver Seat Front Vertical Up Driver circuit and the other lead to (P121) Driver Seat Front Vertical Down Driver circuit at the Front Driver Vertical Seat Adjuster Motor connector.

      Does the test light illuminate with the seat switch engaged?

      Yes 

      No 

      • Go to Step  7.
  5. CHECK THE (G404) DRIVER SEAT FRONT VERTICAL POSITION SENSE WIRE FOR AN OPEN 
    Fig 3: Measuring Resistance Of Driver Seat Front Vert Position Sense Circuit At Front Driver Vert Seat Adjuster Motor Connector To C3 Connector
    GC0097040Courtesy of CHRYSLER LLC
    1. Disconnect the Memory Seat Module C3 connector.
      NOTE: Check connectors - Clean and repair as necessary.
    2. Measure the resistance of the (G404) Driver Seat Front Vertical Position Sense circuit at the Front Driver Vertical Seat Adjuster Motor connector to the C3 connector.

      Is the resistance above 1.0 ohm?

      Yes 

      No 

      • Go to Step  6.
  6. CHECK THE (G494) DRIVER SEAT FRONT VERTICAL SENSOR GROUND FOR AN OPEN 
    Fig 4: Measuring Resistance Of Driver Seat Front Vert Sensor Ground Circuit At Driver Front Vert Seat Adjuster Motor Connector To C3 Connector
    GC0097041Courtesy of CHRYSLER LLC
    1. Measure the resistance of the (G494) Driver Seat Front Vertical Sensor Ground circuit at the Driver Front Vertical Seat Adjuster Motor connector to the C3 connector.

      Is the resistance above 1.0 ohm?

      Yes 

      No 

  7. CHECK THE (P119) DRIVER SEAT FRONT VERTICAL UP DRIVER WIRE FOR AN OPEN 
    Fig 5: Measuring Resistance Of Driver Seat Front Vert Up Driver Circuit At Driver Front Vert Seat Adjuster Motor Connector To C3 Connector
    GC0097042Courtesy of CHRYSLER LLC
    1. Disconnect the Memory Seat Module C3 connector.
      NOTE: Check connectors - Clean and repair as necessary.
    2. Measure the resistance of the (P119) Driver Seat Front Vertical Up Driver circuit at the Driver Front Vertical Seat Adjuster Motor connector to the C3 connector.

      Is the resistance above 1.0 ohm?

      Yes 

      No 

      • Go to Step  8.
  8. CHECK THE (P121) DRIVER SEAT FRONT VERTICAL DOWN DRIVER FOR AN OPEN 
    Fig 6: Measuring Resistance Of Driver Seat Front Vert Down Driver Circuit At Driver Front Vert Seat Adjuster Motor Connector To C3 Connector
    GC0097043Courtesy of CHRYSLER LLC
    1. Measure the resistance of the (P121) Driver Seat Front Vertical Down Driver circuit at the Driver Front Vertical Seat Adjuster Motor connector to the C3 connector.

      Is the resistance above 1.0 ohm?

      Yes 

      No