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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 >> Headlamp Warning >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK HEADLAMP WARNING SIGNAL CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect front combination lamp connector.
    3. Turn ignition switch ON.
    4. Check voltage between front combination lamp harness connector and ground.

      +

      -

      Voltage

      (Approx.)

      Front combination lamp

      Connector

      Terminal

      RH

      E49

      2

      Ground

      12 V

      LH

      E48

    Is the inspection result normal?

    YES

    Replace front combination lamp. Refer to Removal and Installation .

    NO

    GO TO 2.

  2. CHECK HEADLAMP WARNING SIGNAL CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect combination meter connector.
    3. Check continuity between front combination lamp harness connector and combination meter harness connector.

      Front combination lamp

      Combination meter

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      RH

      E49

      2

      M53

      17

      Existed

      LH

      E48

      18

    Is the inspection result normal?

    YES

    Replace combination meter. Refer to Removal and Installation .

    NO

    Repair or replace harness.