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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Exterior Lighting System (DTC/Circuit Diagnosis) (Except Hybrid) >> DTC/Circuit Diagnosis >> Front Fog Lamp Circuit >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK FRONT FOG LAMP FUSE 
    1. Turn ignition switch OFF.
    2. Check that the following fuses are not blown (open).

      Unit

      Location

      Fuse No.

      Capacity

      Front fog lamp

      IPDM E/R

      #59

      15 A

    Is the fuse blown (open)?

    YES

    Replace the blown fuse after repairing the affected circuit if a fuse is blown (open).

    NO

    GO TO 2.

  2. CHECK FRONT FOG LAMP POWER SUPPLY 

    SYMBOL With CONSULT

    1. Turn ignition switch ON.
    2. Select "EXTERNAL LAMPS" in "Active Test" mode of "IPDM E/R" using CONSULT.
    3. With operating the test items, check the voltage between IPDM E/R harness connector and ground.

      +

      -

      Test item

      Voltage

      IPDM E/R

      Connector

      Terminal

      RH

      E8

      86

      Ground

      EXTERNAL LAMPS

      Fog

      9 - 16 V

      Off

      0 - 1 V

      LH

      87

      Fog

      9 - 16 V

      Off

      0 - 1 V

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

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

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

      IPDM E/R

      Front fog lamp

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      RH

      E8

      86

      E34

      1

      Existed

      LH

      87

      E64

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace harness.

  4. CHECK FRONT FOG LAMP GROUND CIRCUIT 

    Check continuity between front fog lamp harness connector and ground.

    Front fog lamp

    --

    Continuity

    Connector

    Terminal

    RH

    E34

    2

    Ground

    Existed

    LH

    E64

    Is the inspection result normal?

    YES

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

    NO

    Repair or replace harness.