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Home >> Infiniti >> 2018 >> QX30 Essential, FWD >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Exterior Lighting System - Led Headlamp (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> DTC B17FC: Parking Lamp/Position Lamp Switch >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK DTC WITH BCM 

    Check that DTC is not detected with BCM.

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Refer to DTC Index .

  2. CHECK BATTERY VOLTAGE 

    Measure the battery voltage.

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Perform battery inspection. Refer to How to Handle Battery .

  3. CHECK HEADLAMP CONTROL UNIT POWER SUPPLY 
    1. Turn ignition switch OFF.
    2. Check voltage between front combination lamp LH harness connector and ground.
      LH

      (+)

      (-)

      Voltage

      (Approx.)

      Front combination lamp LH

      Connector

      Terminal

      E115

      4

      Ground

      13.6 V

      RH

      (+)

      (-)

      Voltage

      (Approx.)

      Front combination lamp RH

      Connector

      Terminal

      E116

      4

      Ground

      13.6 V

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace harness.

  4. CHECK HEADLAMP CONTROL UNIT GROUND CIRCUIT 
    1. Disconnect front combination lamp connector.
    2. Check continuity between front combination lamp harness connector and ground.
      LH

      Front combination lamp LH

      Ground

      Continuity

      Connector

      Terminal

      E115

      5

      Existed

      RH

      Front combination lamp RH

      Ground

      Continuity

      Connector

      Terminal

      E116

      5

      Existed

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Repair or replace harness.