ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C14B0, C14B1, C14B2, C14B4, C14B5, C14C0, C14C1, C14C2, C14C4, C14C5, C14D0, C14D1, C14D2, C14D3, C14D4

DTC Code DTC Name
C14B0 Reaction Force Pressure Sensor Power Supply Voltage Malfunction
C14B1 Reaction Force Pressure Sensor Communication Malfunction
C14B2 Reaction Force Pressure Sensor Internal Malfunction
C14B4 Reaction Force Pressure Sensor Output Malfunction
C14B5 Reaction Force Pressure Sensor Data Invalid
C14C0 Servo Pressure Sensor Power Supply Voltage Malfunction
C14C1 Servo Pressure Sensor Communication Malfunction
C14C2 Servo Pressure Sensor Internal Malfunction
C14C4 Servo Pressure Sensor Output Malfunction
C14C5 Servo Pressure Sensor Data Invalid
C14D0 Accumulator Pressure Sensor Power Supply Voltage Malfunction
C14D1 Accumulator Pressure Sensor Communication Malfunction
C14D2 Accumulator Pressure Sensor Internal Malfunction
C14D3 Accumulator Pressure Sensor Output Malfunction
C14D4 Accumulator Pressure Sensor Data Invalid

DESCRIPTION

If the skid control ECU (brake booster with master cylinder assembly) detects an internal sensor (reaction force pressure sensor, accumulator pressure sensor or servo pressure sensor) malfunction during self-diagnosis, DTCs are stored.

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note
C14B0 Reaction Force Pressure Sensor Power Supply Voltage Malfunction 201 The supplied voltage to the sensor is less than 6.3 V or 7.7 V or more for 0.05 seconds or more. Skid control ECU (brake booster with master cylinder assembly) Electronically controlled brake system DTC
C14B1 Reaction Force Pressure Sensor Communication Malfunction 202 Communication with the sensor is invalid for 0.05 seconds or more. Skid control ECU (brake booster with master cylinder assembly) Electronically controlled brake system DTC
C14B2 Reaction Force Pressure Sensor Internal Malfunction 203 A malfunction is detected by self-diagnosis function of the sensor. Skid control ECU (brake booster with master cylinder assembly) Electronically controlled brake system DTC
C14B4 Reaction Force Pressure Sensor Output Malfunction 207

Fluctuation of the sensor signal exceeds the threshold (7.5 MPa (76.5 kgf/cm2, 1088 psi) or more from the previous value) for 0.1 seconds or more.

 Skid control ECU (brake booster with master cylinder assembly) Electronically controlled brake system DTC
C14B5 Reaction Force Pressure Sensor Data Invalid 208 Data from the sensor is invalid for 0.2 seconds or more. Skid control ECU (brake booster with master cylinder assembly) Electronically controlled brake system DTC
C14C0 Servo Pressure Sensor Power Supply Voltage Malfunction 421 The supplied voltage to the sensor is less than 6.3 V or 7.7 V or more for 0.05 seconds or more. Skid control ECU (brake booster with master cylinder assembly) Electronically controlled brake system DTC
C14C1 Servo Pressure Sensor Communication Malfunction 422 Communication with the sensor is invalid for 0.05 seconds or more. Skid control ECU (brake booster with master cylinder assembly) Electronically controlled brake system DTC
C14C2 Servo Pressure Sensor Internal Malfunction 423 A malfunction is detected by self-diagnosis function of the sensor. Skid control ECU (brake booster with master cylinder assembly) Electronically controlled brake system DTC
C14C4 Servo Pressure Sensor Output Malfunction 426

Fluctuation of the sensor signal exceeds the threshold (7.5 MPa (76.5 kgf/cm2, 1088 psi) or more from the previous value) for 0.1 seconds or more.

 Skid control ECU (brake booster with master cylinder assembly) Electronically controlled brake system DTC
C14C5 Servo Pressure Sensor Data Invalid 427 Data from the sensor is invalid for 0.2 seconds or more. Skid control ECU (brake booster with master cylinder assembly) Electronically controlled brake system DTC
C14D0 Accumulator Pressure Sensor Power Supply Voltage Malfunction 331 The supplied voltage to the sensor is less than 6.3 V or 7.7 V or more for 0.05 seconds or more. Skid control ECU (brake booster with master cylinder assembly) Electronically controlled brake system DTC
C14D1 Accumulator Pressure Sensor Communication Malfunction 332 Communication with the sensor is invalid for 0.2 seconds or more. Skid control ECU (brake booster with master cylinder assembly) Electronically controlled brake system DTC
C14D2 Accumulator Pressure Sensor Internal Malfunction 335 A malfunction is detected by self-diagnosis function of the sensor. Skid control ECU (brake booster with master cylinder assembly) Electronically controlled brake system DTC
C14D3 Accumulator Pressure Sensor Output Malfunction 333

Fluctuation of the sensor signal exceeds the threshold (7.5 MPa (76.5 kgf/cm2, 1088 psi) or more from the previous value) for 0.1 seconds or more.

 Skid control ECU (brake booster with master cylinder assembly) Electronically controlled brake system DTC
C14D4 Accumulator Pressure Sensor Data Invalid

336

337

  • INF Code: 336


    • Data from the sensor is invalid for 0.8 seconds or more.

  • INF Code: 337


    • ECU internal malfunction.

      (A sensor malfunction is detected by the internal IC.)

 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".

Click here

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. Check if the same DTC is output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTCs C14B0, C14B1, C14B2, C14B4, C14B5, C14C0, C14C1, C14C2, C14C4, C14C5, C14D0, C14D1, C14D2, C14D3 and/or C14D4 are output. A
      DTCs C14B0, C14B1, C14B2, C14B4, C14B5, C14C0, C14C1, C14C2, C14C4, C14C5, C14D0, C14D1, C14D2, C14D3 and C14D4 are not output. B

    A

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

    B

    USE SIMULATION METHOD TO CHECK Click here