C1337

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: C1337/37: Different Diameter Tire Malfunction



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
NOTE:
When replacing the master cylinder solenoid, perform zero point calibration Calibration.

PROCEDURE

1. CHECK TIRE SIZE
(a) Check tire size and condition of all 4 wheels.
OK:
Condition of all 4 wheels is normal and tire size is same.
NG -- REPLACE TIRES SO THAT ALL 4 TIRES ARE SAME SIZE
OK -- Continue to next step.
2. INSPECT SPEED SENSOR ROTOR
(a) Check the front speed sensor rotors C0200 and rear speed sensor rotors C0210.

Result





C -- REPLACE REAR AXLE HUB AND BEARING ASSEMBLY (SPEED SENSOR ROTOR)
B -- REPLACE FRONT AXLE HUB SUB-ASSEMBLY (SPEED SENSOR ROTOR)
A -- Continue to next step.
3. INSPECT SPEED SENSOR
(a) Check the front speed sensor circuit C0200 and rear speed sensor circuit C0210.

Result





C -- REPLACE REAR SPEED SENSOR
B -- REPLACE FRONT SPEED SENSOR
A -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - SPEED SENSOR)
(a) Check the front speed sensor circuit C0200 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 Reading and Clearing Diagnostic Trouble Codes.
(b) Drive the vehicle at a speed of approximately 32 km/h (20 mph) or more for 60 seconds or more.
(c) Check if the same DTCs are output Reading and Clearing Diagnostic Trouble Codes.
HINT: Reinstall the sensors, connectors, etc. and restore the previous vehicle conditions before rechecking for DTCs.

Result





B -- USE SIMULATION METHOD TO CHECK
A -- REPLACE MASTER CYLINDER SOLENOID