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Nissan Sentra B18 (2020-2025) Service Manual: Headlamp (hi) Circuit

Component Function Check

Component Function Check

  1. CHECK HEADLAMP (HI) OPERATION

    1. CONSULT

      1. Select “HEADLAMP (HI)” in “Active Test” mode of “IPDM E/R”.

      2. Turn lighting switch 2ND.

      3. With operating the test item, check that the headlamp (HI) is turned ON.

        On

        : Headlamp (HI) ON

        Off

        : Headlamp (HI) OFF

    Is the inspection result normal?

    YES>>

    Headlamp (HI) circuit is normal.

    NO>>

    Refer to Diagnosis Procedure.

Diagnosis Procedure

Diagnosis Procedure

  1. CHECK HEADLAMP (HI) OUTPUT VOLTAGE

    1. CONSULT

      1. Ignition switch ON.

      2. Turn lighting switch 2ND.

      3. Select “HEADLAMP (HI)” in “Active Test” mode of “IPDM E/R”.

      4. With operating the test item, check voltage between IPDM E/R harness connector and ground.

        +

        -

        Test item

        Voltage

        (Approx.)

        IPDM E/R

        Connector

        Terminal

        RH

        E48

        54

        Ground

        HEADLAMP (HI)

        On

        Battery voltage

        Off

        0V

        LH

        E44

        59

        On

        Battery voltage

        Off

        0V

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    GO TO 3.

  2. CHECK HEADLAMP (HI) POWER SUPPLY CIRCUIT (OPEN)

      1. Ignition switch OFF.

      2. Turn lighting switch OFF.

      3. Disconnect IPDM E/R connector and front combination lamp connector.

      4. Check continuity between IPDM E/R harness connector and front combination lamp harness connector.

        IPDM E/R

        Front combination lamp

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        RH

        E48

        54

        E38

        8

        Yes

        LH

        E44

        59

        E37

    Is the inspection result normal?

    YES>>

    Refer to Diagnosis Procedure.

    NO>>

    Repair or replace harness.

  3. CHECK HEADLAMP (HI) POWER SUPPLY CIRCUIT (SHORT TO GROUND)

      1. Ignition switch OFF.

      2. Turn lighting switch OFF.

      3. Disconnect IPDM E/R connector, front combination lamp RH connector and front combination lamp LH connector.

      4. Check continuity between IPDM E/R harness connector and ground.

      IPDM E/R

      —

      Continuity

      Connector

      Terminal

      RH

      E48

      54

      Ground

      No

      LH

      E44

      59

    Is the inspection result normal?

    YES >>

    Replace IPDM E/R. Refer to Removal and Installation.

    NO >>

    Repair or replace harness.

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