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Nissan Sentra B18 (2020-2025) Service Manual: Diagnosis Procedure

Nissan Sentra B18 (2020-2025) Service Manual / Body Interior / Seat :: Dtc/circuit Diagnosis / Cushion Heater Rh / Diagnosis Procedure

Diagnosis Procedure

  1. CHECK FRONT SEAT HEATER RH POWER SUPPLY

      1. Ignition switch ON.

      2. Check voltage between front seat heater RH harness connector and ground.

        (+)

        (–)

        Condition

        Voltage

        (Approx.)

        Front seat heater RH

        Connector

        Terminal

        B13

        3

        Ground

        Heated seat switch RH (HIGH)

        ON

        Battery voltage

        Other than above

        0 V

        4

        Heated seat switch RH (LOW)

        ON

        Battery voltage

        Other than above

        0 V

    Is the inspection result normal?

    YES>>

    GO TO 3.

    NO>>

    GO TO 2.

  2. CHECK FRONT SEAT HEATER RH CIRCUIT

      1. Turn heated seat switch OFF.

      2. Ignition switch OFF.

      3. Disconnect front seat heater RH connector, heated seat RH low relay connector and heated seat RH high relay connector.

      4. Check continuity between front seat heater RH harness connector, heated seat RH low relay harness connector and heated seat RH high relay harness connector.

        Front seat heater RH

        Heated seat RH relay

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        B13

        3

        High

        M144

        3

        Yes

        4

        Low

        M147

      5. Check continuity between front seat heater RH harness connector and ground.

        Front seat heater RH

        (–)

        Continuity

        Connector

        Terminal

        B13

        3

        Ground

        No

        4

    Is the inspection result normal?

    YES>>

    Replace corresponding heated seat RH relay.

    NO>>

    Repair or replace harness.

  3. CHECK FRONT SEAT HEATER RH GROUND CIRCUIT

      1. Ignition switch OFF.

      2. Disconnect front seat heater RH connector.

      3. Check continuity between front seat heater RH harness connector and ground.

        Front seat heater RH

        (–)

        Continuity

        Connector

        Terminal

        B13

        6

        Ground

        Yes

    Is the inspection result normal?

    YES>>

    Replace front seat heater RH. Refer to Exploded View.

    NO>>

    Repair or replace harness.

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...

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