Dtc C1421 Open Or Short In Master Cylinder Pressure Sensor
Brake. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
DESCRIPTION
INSPECTION PROCEDURE
REPLACE BRAKE ACTUATOR ASSEMBLY
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 |
DESCRIPTION
The master cylinder pressure sensor is connected to the skid control ECU in the brake actuator assembly.
DTC Code
| DTC Detection Condition
| Trouble Area
|
C1421
| Either of the following is detected:
- 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.
- When the VCM terminal voltage is between 4.8 and 5.2 V, the PMC terminal voltage is not between 0.19 and 4.57 V for 1.2 seconds or more.
| Brake actuator assembly (Master cylinder pressure sensor)
|
C1423
| The PMC terminal voltage is less than 0.27 V for 5 seconds or more.
| Brake actuator assembly (Master cylinder pressure sensor)
|
C1424
| Any of the following is detected:
- Noise occurs in the PMC terminal 7 times or more within 5 seconds.
- When the vehicle speed drops from 40 km/h (25 mph) to 10 km/h (6 mph), the master cylinder pressure does not change by at least 0.048 MPa.
- At a vehicle speed 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.
- At a vehicle speed 7 km/h (4.3 mph) or more, the PMC terminal voltage is 1.0 V or higher and does not change by at least 0.048 MPa for 30 seconds or more.
| Brake actuator assembly (Master cylinder pressure sensor)
|
INSPECTION PROCEDURE
- NOTICE:
- When replacing the brake actuator assembly, perform zero point calibration (RAV4_ACA30 RM000001K1O00SX.html).
| 1.REPLACE BRAKE ACTUATOR ASSEMBLY |
Replace the brake actuator assembly (master cylinder pressure sensor) (RAV4_ACA30 RM000001XV200PX.html).