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Nissan Sentra B18 (2020-2025) Service Manual: Ambient Sensor Signal Circuit

Diagnosis Procedure

Diagnosis Procedure

  1. CHECK AMBIENT SENSOR POWER SUPPLY

      1. Ignition switch OFF.

      2. Disconnect ambient sensor harness connector.

      3. Ignition switch ON.

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

        (+)

        (–)

        Voltage

        (Approx.)

        Ambient sensor

        Connector

        Terminal

        E67

        1

        Ground

        5 V

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    GO TO 4.

  2. CHECK AMBIENT SENSOR GROUND CIRCUIT

      1. Ignition switch OFF.

      2. Check continuity between ambient sensor harness connector and ground.

        Ambient sensor

        —

        Continuity

        Connector

        Terminal

        E67

        2

        Ground

        Yes

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Repair or replace harness or connector.

  3. CHECK AMBIENT SENSOR

    1. Check ambient sensor. Refer to Component Inspection.

    Is the inspection result normal?

    YES >>

    Replace combination meter. Refer to Removal and Installation.

    NO >>

    Replace ambient sensor. Refer to Removal and Installation.

  4. CHECK AMBIENT SENSOR POWER SUPPLY CIRCUIT FOR OPEN

      1. Ignition switch OFF.

      2. Disconnect combination meter harness connector.

      3. Check continuity between ambient sensor harness connector and combination meter harness connector.

        Ambient sensor

        Combination meter

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        E67

        1

        M24

        29

        Yes

    Is the inspection result normal?

    YES >>

    GO TO 5.

    NO >>

    Repair or replace harness or connector.

  5. CHECK AMBIENT SENSOR POWER SUPPLY CIRCUIT FOR GROUND SHORT

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

      Ambient sensor

      —

      Continuity

      Connector

      Terminal

      E67

      1

      Ground

      No

    Is the inspection result normal?

    YES >>

    GO TO 6.

    NO >>

    Repair or replace harness or connector.

  6. CHECK AMBIENT SENSOR POWER SUPPLY CIRCUIT FOR POWER SHORT

      1. Ignition switch ON.

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

        (+)

        (–)

        Voltage

        (Approx.)

        Ambient sensor

        Connector

        Terminal

        E67

        1

        Ground

        0 V

    Is the inspection result normal?

    YES>>

    Replace combination meter. Refer to Removal and Installation.

    NO>>

    Repair or replace harness or connector.

Component Inspection

Component Inspection

  1. CHECK AMBIENT SENSOR

      1. Ignition switch OFF.

      2. Disconnect ambient sensor connector.

      3. Check resistance between ambient sensor terminals.

        Ambient sensor

        Condition

        Resistance: kΩ

        Terminals

        Temperature: °C (°F)

        1

        2

        −15 (5)

        12.73

        −10 (14)

        9.92

        −5 (23)

        7.80

        0 (32)

        6.19

        5 (41)

        4.95

        10 (50)

        3.99

        15 (59)

        3.24

        20 (68)

        2.65

        25 (77)

        2.19

        30 (86)

        1.81

        35 (95)

        1.51

        40 (104)

        1.27

        45 (113)

        1.07

    Is the inspection result normal?

    YES>>

    Inspection End.

    NO>>

    Replace ambient sensor. Refer to Removal and Installation.

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