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Home >> Infiniti >> 2021 >> QX50 Essential, 4WD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> ADAS Control Unit (DTC/Circuit Diagnosis) (1 Of 2) >> DTC C1A40: System Switch Circuit >> ADAS Control Unit >> Without Direct Adaptive Steering System >> DTC Description >> Confirmation Procedure
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Confirmation Procedure

  1. CHECK DTC PRIORITY 

    If DTC "C1A40-23" or "C1A40-24" is displayed with DTC "U1000-01", first diagnose the DTC "U1000-01".

    Is applicable DTC detected?

    YES

    Perform diagnosis of applicable. Refer to DTC Description .

    NO

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE 
    1. Start the engine
    2. Perform "All DTC Reading".
    3. Check if the "C1A40-23" or "C1A40-24" is detected as the current malfunction in the "Self Diagnostic Result" of "ICC/ADAS".

    Is "C1A40-23" or "C1A40-24" detected as the current malfunction?

    YES

    Refer to Diagnosis Procedure .

    NO

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

    NO

    Confirmation after repair: INSPECTION END