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Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control System (VDC/TCS/Abs) (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> C1129 Incomplete DECEL G Sensor Calibration >> DTC Description

DTC Description

DTC DETECTION LOGIC 

DTC No. CONSULT screen item(Trouble diagnosis content) DTC detected condition
C1129-54 COMBINE SENSOR(Combine sensor) Diagnosis condition When ignition switch is ON.
Signal (terminal) Calibration of yaw rate/side/decel G sensor record data signal.
Threshold When calibration of yaw rate/side/decel G sensor is not complete.
Diagnosis delay time 1 second or less

POSSIBLE CAUSE 

NOTE: SYMBOL Confirm if DTC is PAST or CRNT. If DTC is CRNT, proceed with Diagnosis Procedure. If DTC is PAST, clear the DTC. Do not replace the ABS actuator and electric unit (control unit) for a PAST DTC.
PAST DTC CRNT DTC
-
  • Incomplete calibration of decel G sensor
  • ABS actuator and electric unit (control unit)

FAIL-SAFE 

The following systems are canceled:

DTC CONFIRMATION PROCEDURE 

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

    >>

    GO TO 2.

  2. CHECK DTC DETECTION 
    1. SYMBOL CONSULT
      1. Ignition switch OFF.
        NOTE: SYMBOL Wait at least 10 seconds after placing ignition switch to OFF.
      2. Start the engine.
        NOTE: SYMBOL Wait at least 10 seconds after starting the engine.
      3. Select "Self Diagnostic Result" mode of "ABS".

    Is DTC "C1129-54" detected?

    YES-1>>

    "C1129-54" is displayed as "CRNT": Proceed to Diagnosis Procedure .

    YES-2>>

    "C1129-54" is displayed as "PAST": Inspection End (Erase "Self Diagnostic Result" mode of "ABS").

    NO-1>>

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

    NO-2>>

    Confirmation after repair: Inspection End.