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Home >> Nissan-Datsun >> 2021 >> Sentra SR >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Exterior Lighting System - Led Headlamp (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> DTC B20CE-11: Hl (Hi) LH PWR SPLY CIRC >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK HEADLAMP (HI) LH POWER SUPPLY CIRCUIT (SHORT) 
    1. Ignition switch OFF.
    2. Turn lighting switch OFF.
    3. Disconnect IPDM E/R connector and front combination lamp LH connector.
    4. Check continuity between IPDM E/R harness connector and ground.

      IPDM E/R

      --

      Continuity

      Connector

      Terminal

      E44

      59

      Ground

      No

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Repair or replace harness.

  2. CHECK HEADLAMP (HI) LH POWER SUPPLY 

    SYMBOL CONSULT

    1. Connect IPDM E/R connector.
    2. Ignition switch ON.
    3. Turn lighting switch 2ND.
    4. Select "HEADLAMP (HI)" in "Active Test" mode of "IPDM E/R".
    5. With operating the test items, check the voltage between front combination lamp LH harness connector and ground.

      +

      -

      Test item

      Voltage

      (Approx.)

      Front combination lamp LH

      Connector

      Terminal

      E37

      8

      Ground

      HEADLAMP (HI)

      On

      Battery voltage

      Off

      0 V

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

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

  3. CHECK HEADLAMP (HI) LH 

    Check the headlamp (HI) LH. Refer to Component Inspection .

    Is the inspection result normal?

    YES

    Inspection End.

    NO

    Repair or replace the malfunctioning part.