Dtc C1421 Open Or Short In Master Cylinder Pressure Sensor

DTC C1421 Open or Short in Master Cylinder Pressure Sensor

DTC C1423 Master Cylinder Pressure Sensor Zero Point Low Malfunction

DTC C1424 Master Cylinder Pressure Sensor Output Malfunction

1. With the IG1 terminal voltage between 9.5 and 17.4 V, the VCM terminal voltage is not between 4.4 and 5.6 V for 1.2 seconds or more.
   
2. When the VCM terminal voltage is between 4.4 and 5.6 V, the PMC terminal voltage is not between 0.19 and 4.57 V for 1.2 seconds or more.
   

1. Noise occurs in the PMC terminal 7 times or more within 5 seconds.
   
2. When the vehicle speed drops from 40 km/h (25 mph) to 0 km/h (0 mph), the master cylinder pressure does not change by at least 0.048 MPa.
   
3. At a vehicle speed of 7 km/h (4.3 mph) or more, the PMC terminal voltage is between 0.86 and 1.0 V and does not change by at least 0.048 MPa for 60 seconds or more.
   
4. At a vehicle speed of 7 km/h (4.3 mph) or more, the PMC terminal voltage is 1.0 V or more and does not change by at least 0.048 MPa for 30 seconds or more.
   
5. All of the following are detected 8 times continuously each time the ignition switch is turned to ON. (8-trip)
   
1. Vehicle speed is 7 km/h (4.3 mph) or more
   
2. Stop light switch is on
   
3. Difference between the master cylinder pressure and the sensor input value is 20 MPa/s or less.
   
4. A condition where the sensor input value is apparently larger than the estimated master cylinder pressure based on the deceleration rate continues for 1 second or more, and repeats 5 times or more during each trip.