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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 B164C: Rear Turn Signal Lamp LH Diagnostic Circuit >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK REAR TURN DIAGNOSTIC CIRCUIT LH SIGNAL CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect following connectors.
      • Rear combination lamp LH (body side)
      • Rear combination lamp LH (back door side)
    3. Check continuity between rear combination lamp LH (body side) harness connector and ground.

      Rear combination lamp LH (body side)

      Ground

      Continuity

      Connector

      Terminal

      M194

      6

      Not existed

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Repair or replace harness.

  2. ERASE DTC 
    1. Connect following connectors.
      • Rear combination lamp LH (body side)
      • Rear combination lamp LH (back door side)
    2. Turn ignition switch ON.
    3. Select "Self Diagnostic Result" mode of "BCM" using CONSULT.
    4. Erase DTC, and then repeat "DTC CONFIRMATION PROCEDURE". Refer to DTC Description .

    Is DTC detected?

    YES

    GO TO 3.

    NO

    INSPECTION END

  3. REPLACE REAR COMBINATION LAMP LH AND ERASE DTC 
    1. Turn ignition switch OFF.
    2. Replace corresponding rear combination lamp LH. Refer to Removal and Installation (body side) or Removal and Installation (back door side)
    3. Turn ignition switch ON.
    4. Select "Self Diagnostic Result" mode of "BCM" using CONSULT.
    5. Erase DTC, and then repeat "DTC CONFIRMATION PROCEDURE". Refer to DTC Description .

    Is DTC detected?

    YES

    Replace BCM. Refer to Removal and Installation .

    NO

    INSPECTION END