ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C14D5

DTC Code DTC Name
C14D5 Accumulator Pressure Sensor Stuck

DESCRIPTION

The accumulator pressure sensor is built into the brake booster with master cylinder assembly and detects the accumulator pressure.

If the skid control ECU (brake booster with master cylinder assembly) detects that the accumulator pressure sensor value is below the threshold, operation of the motor relay is requested and the pump motor built into the brake booster pump assembly operates.

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note
C14D5 Accumulator Pressure Sensor Stuck 334 When the pump motor is operating, the accumulator pressure sensor signal does not change for 14 seconds or more. Skid control ECU (brake booster with master cylinder assembly) Electronically controlled brake system DTC

CAUTION / NOTICE / HINT

Note

After replacing the skid control ECU (brake booster with master cylinder assembly), perform linear solenoid valve offset learning, ABS holding solenoid valve learning, yaw rate and acceleration sensor zero point calibration and system information memorization after performing "Reset Memory".

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PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs

    2. Turn the power switch off.

    3. Turn the power switch on (IG).

    4. Depress the brake pedal 10 times or more to operate the pump motor.

    5. After the pump motor stops, check for DTCs.

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      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTC C14D5 is not output. A
      DTC C14D5 is output. B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY for LHD: Click here
    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY for RHD: Click here