Vehicle Stability Control System (For Vacuum Brake Booster)

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for Vacuum Brake Booster): C1337/37: Diameter of the Tire is not Uniform
C1337/37 - Diameter of the Tire is not Uniform

DESCRIPTION

The skid control ECU measures the speed of each wheel by receiving signals from the speed sensor. These signals are used for recognizing that all 4 wheels are operating properly. Therefore, all wheel signals must be equal.





INSPECTION PROCEDURE

NOTICE:
When replacing the master cylinder solenoid, perform zero point calibration Vehicle Stability Control System (for Vacuum Brake Booster).

PROCEDURE

1. CHECK TIRE SIZE

(a) Check tire size and condition of all 4 wheels.

NG -- REPLACE TIRES SO THAT ALL 4 TIRES ARE SAME IN SIZE
OK -- Continue to next step.

2. INSPECT SPEED SENSOR ROTOR

(a) Check the front speed sensor circuit Front Speed Sensor RH Circuit - Vehicle Stability Control System (for Vacuum Brake Booster)) and rear speed sensor circuit C0210.

NG -- REPLACE SPEED SENSOR ROTOR
OK -- Continue to next step.

3. INSPECT SPEED SENSOR

(a) Check the front speed sensor circuit Front Speed Sensor RH Circuit - Vehicle Stability Control System (for Vacuum Brake Booster)) and rear speed sensor circuit C0210.

NG -- REPLACE SPEED SENSOR
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - SPEED SENSOR)

(a) Check the front speed sensor circuit Front Speed Sensor RH Circuit - Vehicle Stability Control System (for Vacuum Brake Booster)) and rear speed sensor circuit C0210.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. RECONFIRM DTC

(a) Clear the DTCs Vehicle Stability Control System (for Vacuum Brake Booster).

(b) Drive the vehicle at a speed of approximately 20 km/h (13 mph) or more for 60 seconds or more.

(c) Check if the same pending DTC is detected Vehicle Stability Control System (for Vacuum Brake Booster).

HINT
Reinstall the sensors, connectors, etc. and restore the previous vehicle conditions before rechecking for DTCs.

Result





B -- CHECK FOR INTERMITTENT PROBLEMS How To Proceed With Troubleshooting

A -- REPLACE BRAKE ACTUATOR ASSEMBLY Removal