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Nissan Sentra B18 (2020-2025) Service Manual: Sunload Sensor

Diagnosis Procedure

Diagnosis Procedure

  1. CHECK SUNLOAD SENSOR SIGNAL

      1. Ignition switch ON.

      2. Check voltage between A/C auto amp. harness connector.

        A/C auto amp.

        Voltage

        (Approx.)

        Connector

        Terminals

        +

        -

        M34

        47

        78

    Is the inspection result normal?

    YES >>

    Inspection End.

    NO >>

    GO TO 2.

  2. CHECK SUNLOAD SENSOR POWER SUPPLY

      1. Ignition switch OFF.

      2. Disconnect sunload sensor connector.

      3. Ignition switch ON.

      4. Check voltage between sunload sensor harness connector and ground.

        +

        −

        Voltage

        (Approx.)

        Sunload sensor

        Connector

        Terminal

        M70

        1

        Ground

        5 V

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    GO TO 5.

  3. CHECK SUNLOAD SENSOR GROUND CIRCUIT FOR OPEN

      1. Ignition switch OFF.

      2. Disconnect A/C auto amp. connector.

      3. Check continuity between sunload sensor harness connector and A/C auto amp. harness connector.

        Sunload sensor

        A/C auto amp.

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        M70

        2

        M34

        78

        Yes

    Is the inspection result normal?

    YES >>

    GO TO 4.

    NO >>

    Repair harness or connector.

  4. REPLACE SUNLOAD SENSOR

    1. Replace sunload sensor. Refer to Removal and Installation.

    Is the inspection result normal?

    YES >>

    Inspection End.

    NO >>

    Replace A/C auto amp. Refer to Removal and Installation.

  5. CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR OPEN

      1. Ignition switch OFF.

      2. Disconnect A/C auto amp. connector.

      3. Check continuity between sunload sensor harness connector and A/C auto amp. harness connector.

        Sunload sensor

        A/C auto amp.

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        M70

        1

        M34

        47

        Yes

    Is the inspection result normal?

    YES >>

    GO TO 6.

    NO >>

    Repair harness or connector.

  6. CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR SHORT

      1. Check continuity between sunload sensor harness connector and ground.

        Sunload sensor

        —

        Continuity

        Connector

        Terminal

        M70

        1

        Ground

        No

      2. Check voltage between sunload sensor harness connector and ground.

        +

        −

        Voltage

        (Approx.)

        Sunload sensor

        Connector

        Terminal

        M70

        1

        Ground

        0 V

    Is the inspection result normal?

    YES >>

    GO TO 4.

    NO >>

    Repair harness or connector.

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