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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Exterior Lighting System - Led Headlamp (Circuit Diagnosis)) >> Circuit Diagnosis >> Headlamp (Hi) Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK HEADLAMP (HI) FUSE 
    1. Turn ignition switch OFF.
    2. Check that the following fuses are not blown:

      Unit

      Location

      Fuse No.

      Capacity

      Headlamp HI (RH)

      IPDM E/R

      34

      10A

      Headlamp HI (LH)

      35

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Replace the blown fuse after repairing the affected circuit.

  2. CHECK HEADLAMP (HI) OUTPUT VOLTAGE 

    SYMBOL With CONSULT

    1. Disconnect applicable front combination lamp connector.
    2. Turn ignition switch ON.
    3. Select "EXTERNAL LAMPS" in "Active Test" mode of "IPDM E/R".
    4. While operating the test items, check voltage between applicable front combination lamp harness connector and ground.

      (+)

      (-)

      Test item

      Voltage

      (Approx.)

      Front combination lamp

      Connector

      Terminal

      RH

      E212

      4

      Ground

      EXTERNAL LAMPS

      Hi

      Battery voltage

      Off

      0

      LH

      E217

      Hi

      Battery voltage

      Off

      0

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    GO TO 3.

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

      Front combination lamp

      IPDM E/R

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      RH

      E212

      4

      E200

      80

      Yes

      LH

      E217

      81

    Is the inspection result normal?

    YES

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

    NO

    Repair or replace harness.

  4. CHECK FRONT COMBINATION LAMP (HI) GROUND CIRCUIT 

    Check continuity between the front combination lamp harness connector terminal 8 and ground.

    Front combination lamp

    -

    Continuity

    Connector

    Terminal

    RH

    E212

    8

    Ground

    Yes

    LH

    E217

    Is the inspection result normal?

    YES

    Replace the headlamp bulb. Refer to Bulb Replacement .

    NO

    Repair or replace the harness or connector.