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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 34 (Electronically Controlled Brake System (HV) - Diagnostic Codes (05 Of 11)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C0540-16: Brake Pressure Sensor "A" Circuit Voltage Below Threshold; DTC C0540-1F: Brake Pressure Sensor "A" Circuit Intermittent; DTC C0540-29: Brake Pressure Sensor "A" Signal Invalid; DTC C0540-31: Brake Pressure Sensor "A" No Signal; DTC C0540-96: Brake Pressure Sensor "A" Component Internal Failure; DTC C122D-16: Brake Pressure Sensor "A" Supply Voltage Circuit Voltage Below Threshold; DTC C122D-17: Brake Pressure Sensor "A" Supply Voltage Circuit Voltage Above Threshold [12/2019 - ] >> Description

DTC C0540-16: Brake Pressure Sensor "A" Circuit Voltage Below Threshold; DTC C0540-1F: Brake Pressure Sensor "A" Circuit Intermittent; DTC C0540-29: Brake Pressure Sensor "A" Signal Invalid; DTC C0540-31: Brake Pressure Sensor "A" No Signal; DTC C0540-96: Brake Pressure Sensor "A" Component Internal Failure; DTC C122D-16: Brake Pressure Sensor "A" Supply Voltage Circuit Voltage Below Threshold; DTC C122D-17: Brake Pressure Sensor "A" Supply Voltage Circuit Voltage Above Threshold [12/2019 - ]: Description

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Brake pressure sensor "A": Master cylinder pressure sensor

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
C0540-16 Brake Pressure Sensor "A" Circuit Voltage Below Threshold Master cylinder pressure value is below -0.744 MPa (-7.6 kgf/cm2 , -107 psi) for 5 seconds or more. No. 2 skid control ECU (brake actuator assembly) Comes on
  • SAE Code: C053D (Case 2)
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
C0540-1F Brake Pressure Sensor "A" Circuit Intermittent Fluctuation of the sensor signal exceeds the threshold (15 MPa (153.0 kgf/cm2 , 2175 psi) or more from the previous value) for 0.1 seconds or more. No. 2 skid control ECU (brake actuator assembly) Comes on
  • SAE Code: C056B
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
C0540-29 Brake Pressure Sensor "A" Signal Invalid Data from the sensor is invalid for 0.2 seconds or more. No. 2 skid control ECU (brake actuator assembly) Comes on
  • SAE Code: C0540 (Case 4)
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
C0540-31 Brake Pressure Sensor "A" No Signal Communication with the sensor is invalid for 0.1 seconds or more. No. 2 skid control ECU (brake actuator assembly) Comes on
  • SAE Code: C0540 (Case 1)
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
C0540-96 Brake Pressure Sensor "A" Component Internal Failure A malfunction is detected by self-diagnosis function of the sensor. No. 2 skid control ECU (brake actuator assembly) Comes on
  • SAE Code: C0540 (Case 2 and 3)
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
C122D-16 Brake Pressure Sensor "A" Supply Voltage Circuit Voltage Below Threshold The supplied voltage to the sensor is less than a certain value for 1 second or more. No. 2 skid control ECU (brake actuator assembly) Comes on
  • SAE Code: C122E
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
C122D-17 Brake Pressure Sensor "A" Supply Voltage Circuit Voltage Above Threshold The supplied voltage to the sensor is a certain value or more for 1 second or more. No. 2 skid control ECU (brake actuator assembly) Comes on
  • SAE Code: C122F
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)