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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 >> DTC B20D1-15: Hl (Lo) RH PWR SPLY CIRC >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK HEADLAMP (LO) RH POWER SUPPLY 1 (SHORT TO POWER SUPPLY) 
    1. Ignition switch OFF.
    2. Turn lighting switch OFF.
    3. Disconnect IPDM E/R connector and front combination lamp RH connector.
    4. Check voltage between IPDM E/R harness connector and ground.

      IPDM E/R

      -

      Voltage

      (Approx.)

      Connector

      Terminal

      E44

      62

      Ground

      0 V

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Repair or replace harness.

  2. CHECK HEADLAMP (LO) RH POWER SUPPLY 2 

    SYMBOL CONSULT

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

      +

      -

      Test item

      Voltage

      (Approx.)

      Front combination lamp RH

      Connector

      Terminal

      E38

      4

      Ground

      HEADLAMP (LO)

      On

      Battery voltage

      Off

      0 V

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    GO TO 4.

  3. CHECK HEADLAMP (LO) RH GROUND CIRCUIT 
    1. Ignition switch OFF.
    2. Check continuity between front combination lamp RH harness connector and ground.

      Front combination lamp RH

      --

      Continuity

      Connector

      Terminal

      E38

      1

      Ground

      Yes

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Repair or replace harness.

  4. CHECK HEADLAMP (LO) RH POWER SUPPLY CIRCUIT 
    1. Ignition switch OFF.
    2. Disconnect IPDM E/R connector.
    3. Check continuity between IPDM E/R harness connector and front combination lamp RH harness connector.

      IPDM E/R

      Front combination lamp RH

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      E44

      62

      E38

      4

      Yes

    Is the inspection result normal?

    YES

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

    NO

    Repair or replace harness.

  5. CHECK HEADLAMP (LO) RH 

    Check the headlamp (LO) RH. Refer to Component Inspection .

    Is the inspection result normal?

    YES

    Inspection End.

    NO

    Repair or replace the malfunctioning part.