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Home >> Infiniti >> 2017 >> QX30 Base >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Exterior Lighting System (Led Headlamp) (DTCS) (2 Of 2) >> DTC/Circuit Diagnosis >> DTC B210F: Headlamp Power Supply >> LH >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK FUSE

    1. Turn ignition switch OFF.
    2. Check that the following fuse is not blown (open).
      Unit Location Fuse No. Capacity
      Headlamp control unit Fuse and fusible link block 1 203 15A

    Is the fuse blown (open)?

    YES 

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

    NO 

    GO TO STEP 2. 

  2. CHECK HEADLAMP CONTROL UNIT LH POWER SUPPLY

    Check voltage between front combination lamp LH harness connector and ground.

    (+) (-) Voltage
    (Approx.)
    Front combination lamp LH
    Connector Terminal
    E115 4 Ground 13.6 V

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace harness.

  3. CHECK HEADLAMP CONTROL UNIT LH GROUND CIRCUIT

    1. Disconnect front combination lamp LH connector.
    2. Check continuity between front combination lamp LH harness connector and ground.
    Front combination lamp LH Ground Continuity
    Connector Terminal
    E115 5 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    Repair or replace harness.

  4. ERASE DTC

    1. Connect front combination lamp LH connector.
    2. Turn ignition switch ON.
    3. Select "Self Diagnostic Result" mode of "H/L control module LH" using CONSULT.
    4. Erase DTC, and then repeat "DTC CONFIRMATION PROCEDURE". Refer to DTC DESCRIPTION .

    Is DTC detected?

    YES 

    Replace front combination lamp LH. Refer to REMOVAL AND INSTALLATION .

    NO 

    INSPECTION END