LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Steering Control System (Electric Power Steering) (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> U140E Chassis Control Module >> DTC Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Description

DTC DETECTION LOGIC 

DTC No. CONSULT screen terms(Trouble diagnosis content) DTC detected condition
U140E Chassis control module(Chassis control module) Diagnosis condition When ignition switch is ON.
Signal (terminal) Drive mode signal (Steering mode signal)
Threshold Malfunction of drive mode signal (steering mode signal)
Diagnosis delay time 2 seconds or more

POSSIBLE CAUSE 

FAIL-SAFE 

Normal steering state

DTC CONFIRMATION PROCEDURE 

  1. PRECONDITIONING 
    1. If "DTC CONFIRMATION PROCEDURE" has been previously conducted, always place ignition switch OFF and wait at least 10 seconds before conducting the next test.

    >>

    GO TO 2.

  2. DTC REPRODUCTION PROCEDURE 
    1. SYMBOL CONSULT
      1. Ignition switch ON.
      2. Select "Self Diagnostic Result" mode of "EPS/DAST 3".

    Is DTC "U140E" detected?

    YES>>

    Proceed to diagnosis procedure. Refer to DTC Diagnosis Procedure .

    NO>>

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

    NO>>

    Confirmation after repair: Inspection End.