Vehicle Stability Control System (For Hydraulic Brake Booster)

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic 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 sensors. These signals are used for recognizing whether all 4 wheels are operating properly. Therefore, all wheel signals must be equal.





INSPECTION PROCEDURE

NOTICE:
Check the speed sensor signal after replacement Test Mode Procedure.

PROCEDURE

1. CHECK TIRE SIZE

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

OK:

All 4 wheels are the same size and in the same condition.

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

2. CHECK SPEED SENSOR ROTOR

C0200

(a) Remove the drive shaft, and check around the speed sensor rotor.

OK:

No scratches or foreign matter on the sensor tip.

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

3. CHECK SPEED SENSOR

(a) Check the speed sensor circuit C0200.

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

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

(a) Check the speed sensor circuit C0200.

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

5. RECONFIRM DTC

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

(b) Drive the vehicle at more than 13 mph (20 km/h) for more than 60 seconds.

(c) Check if the same DTCs are detected.





B -- END

A -- REPLACE MASTER CYLINDER SOLENOID