VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1421, C1423, C1424

DTC Code DTC Name
C1421 Open or Short in Master Cylinder Pressure Sensor
C1423 Master Cylinder Pressure Sensor Zero Point Low Malfunction
C1424 Master Cylinder Pressure Sensor Output Malfunction

DESCRIPTION

Refer to DTC C1422 Click here.

DTC No. DTC Detection Condition Trouble Area
C1421

Either of the following is detected:


  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 4.8 and 5.2 V, the PMC terminal voltage is not between 0.19 and 4.57 V for 1.2 seconds or more.

 Master cylinder pressure sensor (Brake actuator assembly)
C1423 The PMC terminal voltage is less than 0.27 V for 5 seconds or more. Master cylinder pressure sensor (Brake actuator assembly)
C1424

Any of the following is detected:


  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 10 km/h (6 mph), the master cylinder pressure does not change by at least 0.048 MPa (0.5 kgf/cm2, 7 psi).

  3. At a vehicle speed of 7 km/h (4 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 (0.5 kgf/cm2, 7 psi) for 60 seconds or more.

  4. At a vehicle speed of 7 km/h (4 mph) or more, the PMC terminal voltage is 1.0 V or more and does not change by at least 0.048 MPa (0.5 kgf/cm2, 7 psi) for 30 seconds or more.

 Master cylinder pressure sensor (Brake actuator assembly)

INSPECTION PROCEDURE

PROCEDURE


  1. REPLACE BRAKE ACTUATOR ASSEMBLY


    1. Replace the master cylinder pressure sensor (brake actuator assembly) Click here.

    2. Perform zero point calibration of the yaw rate and acceleration sensor Click here.

    3. Perform the sensor check in Test Mode Procedure Click here.


    NEXT

    END