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Home >> Toyota >> 2019 >> Highlander Limited, FWD >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Control System - Diagnostic Codes - (Except Hybrid) (2 Of 2) >> Vehicle Stability Control System >> DTC C1422: Master Cylinder Pressure Sensor Zero Point High Malfunction [11/2016 - ] >> Description

DTC C1422: Master Cylinder Pressure Sensor Zero Point High Malfunction [11/2016 - ]: Description

The master cylinder pressure sensor is connected to the skid control ECU in the brake actuator assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1422 Master Cylinder Pressure Sensor Zero Point High Malfunction When vehicle speed is 3 km/h (2 mph) or more and stop light switch assembly is OFF, master cylinder pressure continuously exceeds 1.764 Mpa (18.0 kgf/cm2 , 255 psi) for 5 seconds or more.
  • Stop light switch circuit
  • Master cylinder pressure sensor circuit
  • Master cylinder pressure sensor (brake actuator assembly)
  • Skid control ECU (brake actuator assembly)

HINT: 

for C1422: Even after the trouble areas are repaired, the ABS warning light will not go off unless the following operations are performed.

  1. Turn the ignition switch to ON.
  2. Keep the vehicle stationary for 5 seconds or more and depress the brake pedal lightly 2 or 3 times.
  3. Drive the vehicle at the vehicle speed of 50 km/h (31 mph) and depress and hold the brake pedal firmly for approximately 3 seconds.
  4. Repeat the above operation 3 times or more and check that the ABS warning light goes off.
  5. Clear the DTCs.