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Home >> Infiniti >> 2016 >> Q50 Base, RWD >> Repair and Diagnosis >> Body & Frame >> Seats >> Seats (DTC/Circuit Diagnosis) (Except Hybrid) >> DTC/Circuit Diagnosis >> Seatback Heater >> Driver Side >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK SEATBACK HEATER POWER SUPPLY

    Check voltage between seatback heater harness connector and ground.

    (+) (-) Condition Voltage
    (Approx.)
    Seatback heater
    Connector Terminal
    B630 2 Ground Ignition switch ON Battery voltage
    Other than above 0 V

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Replace seat cushion trim. Refer to DISASSEMBLY AND ASSEMBLY .

  2. CHECK SEATBACK HEATER CONTROL SIGNAL CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect seatback heater connector and seat cushion heater connector.
    3. Check continuity between seatback heater harness connector and seat cushion heater harness connector.
      Seatback heater Seat cushion heater Continuity
      Connector Terminal Connector Terminal
      B630 1 B612 48 Existed
    4. Check continuity between seatback heater harness connector and ground.
      Seatback heater Ground Continuity
      Connector Terminal
      B630 1 Not existed

    Is the inspection result normal?

    YES 

    Replace seatback trim. Refer to DISASSEMBLY AND ASSEMBLY .

    NO 

    Replace seat cushion trim. Refer to DISASSEMBLY AND ASSEMBLY .

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