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Home >> Infiniti >> 2021 >> QX50 Essential, FWD >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Steering Control System (Electric Power Steering) (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> DTC U0401: ECM >> DTC Description >> DTC Confirmation Procedure

DTC Confirmation Procedure

  1. CHECK DTC PRIORITY 

    If DTC "U0401" is displayed with DTC "U1000", first diagnose the DTC "U1000".

    Is applicable DTC detected?

    YES

    Perform diagnosis of applicable DTC. Refer to DTC Description .

    NO

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE 

    SYMBOL CONSULT

    1. Ignition switch ON.
    2. Perform "All DTC Reading".
    3. Check if "U0401" is detected as the current malfunction in "Self Diagnostic Result" of "EPS/DAST 3".

    Is "U0401" 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.

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