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Home >> Nissan-Datsun >> 2021 >> Sentra S >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Exterior Lighting System - Led Headlamp (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> Led Headlamp >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK LED HEADLAMP GROUND CIRCUIT 
    1. Ignition switch OFF.
    2. Disconnect front combination lamp connector.
    3. Check continuity between front combination lamp harness connector and ground.

      Front combination lamp

      --

      Continuity

      Connector

      Terminal

      RH

      E38

      1

      Ground

      Yes

      LH

      E37

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Repair or replace harness.

  2. CHECK LED HEADLAMP 

    Install the normal front combination lamp to the applicable headlamp. Check that the headlamp is turned ON. Refer to Work Procedure .

    Is the headlamp turned ON?

    YES

    Replace the corresponding front combination lamp. Refer to Removal and Installation .

    NO

    LED headlamp is normal.