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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Exterior Lighting System - Led Headlamp (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> DTC B20E3-96: Led Headlamp LH >> DTC Diagnosis Procedure

DTC Diagnosis Procedure

  1. CHECK FRONT COMBINATION LAMP LH SHORT CIRCUIT TO GROUND 
    1. Disconnect front combination lamp LH (upper) connector and IPDM E/R connector.
    2. Check continuity between IPDM E/R harness connector and ground.

    IPDM E/R

    Ground

    Continuity

    Connector

    Terminal

    E200

    53

    No

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Repair or replace harness.

  2. CHECK FRONT COMBINATION LAMP LH POWER SUPPLY CIRCUIT 
    1. Connect IPDM E/R connector E200
    2. Ignition switch ON.
    3. Turn the low beam headlamps ON.
    4. Check voltage between front combination lamp LH (upper) harness connector and ground.

    +

    --

    Voltage

    (Approx.)

    Front combination lamp LH

    Ground

    Battery voltage

    Connector

    Terminal

    LH

    E218

    6

    Is the inspection result normal?

    YES

    Replace front combination lamp RH. Refer to Removal & Installation .

    NO

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