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Home >> Infiniti >> 2017 >> QX70 RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 190 (Seats (DTC/Circuit Diagnosis) (Hybrid)) >> DTC/Circuit Diagnosis >> Seatback Heater >> Passenger Side >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.

  1. CHECK SEATBACK HEATER POWER SUPPLY

    Check voltage between seatback heater harness connector and ground.

    (+) (-) Condition Voltage
    (Approx.)
    Seatback heater
    Connector Terminal
    B632 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
      B632 1 B619 48 Existed
    4. Check continuity between seatback heater harness connector and ground.
      Seatback heater Ground Continuity
      Connector Terminal
      B632 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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