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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 56 (Exterior Lighting System - Halogen Headlamp) >> DTC/Circuit Diagnosis >> Front Fog Lamp 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 FRONT FOG LAMP FUSE 
    1. Turn ignition switch OFF.
    2. Check that the following fuse is not blown:

      Unit

      Location

      Fuse No.

      Capacity

      Front fog lamp

      IPDM E/R

      49

      15A

    Is the inspection result normal?

    YES

    GO TO 2 .

    NO

    Replace the blown fuse after repairing the affected circuit.

  2. CHECK FRONT FOG LAMP OUTPUT VOLTAGE 

    SYMBOL CONSULT

    1. Disconnect front fog 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 the voltage between front fog lamp harness connector and ground.

    (+)

    (-)

    Test item

    Voltage

    (Approx.)

    Front fog lamp

    Connector

    Terminal

    RH

    E303

    1

    Ground

    EXTERNAL LAMPS

    Fog

    Battery voltage

    Off

    0 V

    E306

    3

    Fog

    Battery voltage

    Off

    0 V

    LH

    E214

    1

    Fog

    Battery voltage

    Off

    0 V

    E223

    3

    Fog

    Battery voltage

    Off

    0 V

    Is the inspection result normal?

    YES

    GO TO 5 .

    NO

    GO TO 3 .

  3. CHECK FRONT FOG LAMP POWER SUPPLY CIRCUIT (SHORT) 
    1. Disconnect applicable front fog lamp 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

    78

    No

    79

    Is the inspection result normal?

    YES

    GO TO 4 .

    NO

    Repair or replace harness.

  4. CHECK FRONT FOG LAMP POWER SUPPLY CIRCUIT (OPEN) 
    1. Turn ignition switch OFF.
    2. Disconnect IPDM E/R connector.
    3. Check continuity between IPDM E/R harness connector and front fog lamp harness connector.

    Front fog lamp

    IPDM E/R

    Continuity

    Connector

    Terminal

    Connector

    Terminal

    RH

    E303

    1

    E200

    78

    Yes

    E306

    3

    LH

    E214

    1

    79

    E223

    3

    Is the inspection result normal?

    YES

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

    NO

    Repair or replace harness.

  5. CHECK FRONT FOG LAMP GROUND CIRCUIT 

    Check continuity between front fog lamp harness connector and ground.

    Front fog lamp

    Ground

    Continuity

    Connector

    Terminal

    RH

    E303

    2

    Yes

    E306

    4

    LH

    E214

    2

    E223

    4

    Is the inspection result normal?

    YES

    Replace bulb. Refer to Bulb Replacement .

    NO

    Repair or replace harness.