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Home >> Nissan-Datsun >> 2021 >> Sentra SV >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Exterior Lighting System - Led Headlamp (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> DTC B121A-11: Fr Fog Lamp LH PWR SPLY CIRC >> DTC Confirmation Procedure

DTC Confirmation Procedure

  1. PRECONDITIONING 

    SYMBOL CONSULT

    1. Ignition switch ON.
    2. Select "Fr fog lamp (LH) circ malfunctn" in "Data Monitor" mode of "IPDM E/R".
    3. Check the monitor status.

      Monitor item

      Monitor status

      Fr fog lamp (LH) circ malfunctn

      0

      1

    What is the monitor status?

    "0"

    GO TO 2.

    "1"

    A short circuit is detected multiple times in the front fog lamp LH power supply circuit, and damage accumulates at the smart FET inside the IPDM E/R. For this reason, IPDM E/R does not turn ON the smart FET. Because the DTC cannot be reproduced in this state, Refer to DTC Diagnosis Procedure  and replace IPDM E/R after the malfunctioning part is repaired. Refer to Removal and Installation .

  2. PERFORM DTC CONFIRMATION PROCEDURE 

    SYMBOL CONSULT

    1. Ignition switch OFF.
    2. Ignition switch ON.
    3. Turn lighting switch 1ST, and front fog lamp switch ON.
    4. Select "Self Diagnostic Result" mode of "IPDM E/R".
    5. Check DTC.

    Is DTC detected?

    YES

    Refer to DTC Diagnosis Procedure .

    NO

    To check malfunction symptom before repair: Refer to Intermittent Incident .

    NO

    Confirmation after repair: Inspection End.