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Nissan Sentra B18 (2020-2025) Service Manual: Illumination Control Switch Signal Circuit

Diagnosis Procedure

Diagnosis Procedure

  1. CHECK COMBINATION METER INPUT SIGNAL

      1. Ignition switch ON.

      2. Check voltage between the following terminals of the illumination control switch.

        Illumination control switch

        Condition

        Voltage

        (Approx.)

        Connector

        Terminals

        (+)

        (−)

        M66

        6

        4

        When illumination control switch (+) is pressed

        0 V

        Other than the above

        5 V

        7

        When illumination control switch (−) is pressed

        0 V

        Other than the above

        5 V

    Is the inspection result normal?

    YES>>

    Inspection End.

    NO>>

    GO TO 2.

  2. CHECK ILLUMINATION CONTROL SWITCH SIGNAL CIRCUIT

      1. Ignition switch OFF.

      2. Disconnect combination meter harness connector and illumination control switch harness connector.

      3. Check continuity between combination meter harness connector and illumination control switch harness connector.

        Combination meter

        Illumination control switch

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        M24

        32

        M66

        4

        Yes

        31

        7

        25

        6

      4. Check continuity between combination meter harness connector and ground.

        Combination meter

        —

        Continuity

        Connector

        Terminal

        M24

        32

        Ground

        No

        31

        25

    Is the inspection result normal?

    YES>>

    GO TO 3.

    NO>>

    Repair or replace harness or connector.

  3. CHECK ILLUMINATION CONTROL SWITCH

    1. Check illumination control switch. Refer to Component Inspection.

    Is the inspection result normal?

    YES>>

    Replace combination meter. Refer to Removal and Installation.

    NO>>

    Replace illumination control switch. Refer to Removal and Installation.

Component Inspection

Component Inspection

  1. CHECK ILLUMINATION CONTROL SWITCH

      1. Ignition switch OFF.

      2. Disconnect illumination control switch harness connector.

      3. Check continuity between the following terminals of the illumination control switch:

        Illumination control switch

        Condition

        Continuity

        Terminals

        6

        4

        When illumination control switch (+) is pressed

        Yes

        Other than the above

        No

        7

        When illumination control switch (−) is pressed

        Yes

        Other than the above

        No

    Is the inspection result normal?

    YES >>

    Inspection End.

    NO >>

    Replace illumination control switch. Refer to Removal and Installation.

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