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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 U0155: Can Communication >> LH >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK DTC WITH COMBINATION METER

    Check that DTC is not detected with combination meter.

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Refer to DTC INDEX .

  2. CHECK CAN COMMUNICATION SYSTEM DIAGNOSIS

    Perform the trouble diagnosis for CAN communication system. Refer to TROUBLE DIAGNOSIS FLOW CHART .

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace harness.

  3. REPLACE COMBINATION METER AND ERASE DTC

    1. Turn ignition switch OFF.
    2. Replace combination meter. Refer to REMOVAL AND INSTALLATION .
    3. Turn ignition switch ON.
    4. Select "Self Diagnostic Result" mode of "H/L control module LH" using CONSULT.
    5. 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

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