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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 >> License Plate Lamp Circuit >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK LICENSE PLATE LAMP POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect IPDM E/R connector and license plate lamp connector.
    3. Check continuity between IPDM E/R harness connector and license plate lamp harness connector.

      IPDM E/R

      License plate lamp

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      RH

      E9

      102

      T8

      1

      Existed

      LH

      T9

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Repair or replace harness.

  2. CHECK LICENSE PLATE LAMP GROUND CIRCUIT 

    Check continuity between license plate lamp harness connector and ground.

    License plate lamp

    --

    Continuity

    Connector

    Terminal

    RH

    T8

    2

    Ground

    Existed

    LH

    T9

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Repair or replace harness.

  3. CHECK LICENSE PLATE LAMP BULB 

    Check the applicable license plate lamp bulb.

    Is the inspection result normal?

    YES

    Replace the corresponding license plate lamp. Refer to Removal and Installation .

    NO

    Replace the corresponding license plate lamp bulb. Refer to Replacement .