DESCRIPTION
INSPECTION PROCEDURE
CHECK TIRE SIZE
RECONFIRM DTC
DTC C1337 Diameter of the Tire is not Uniform
DESCRIPTION
The skid control ECU (master cylinder solenoid) 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.
| DTC Code | DTC Detection Condition | Trouble Area |
| C1337 | Either condition is met:
The diameter of the 2 front wheels and 2 rear wheels is different.
There is a wheel speed sensor fault.
| Speed sensor
Speed sensor rotor
Speed sensor circuit
Tire size
|
INSPECTION PROCEDURE
- After replacing the master cylinder solenoid, perform zero point calibration and store the system information ().
- When DTCs C1401 to C1416 are output with DTC C1337, inspect and repair the trouble areas indicated by DTCs C1401 to C1416 first ().
Check tire size and condition of all 4 wheels.
- OK:
- Condition of all 4 wheels is normal and tire size is same.
| | REPLACE TIRES SO THAT ALL 4 TIRES ARE SAME SIZE |
|
|
Turn the ignition switch off.
Drive the vehicle at a speed of approximately 32 km/h (20 mph) or more for 60 seconds or more.
Check if the same DTCs are output ().
- Reinstall the sensors, connectors, etc. and restore the previous vehicle conditions before rechecking for DTCs.
Result| Result | Proceed to |
| DTC is not output | A |
| DTC is output (for LHD) | B |
| DTC is output (for RHD) | C |
| | REPLACE MASTER CYLINDER SOLENOID ()
|
|
|
| | REPLACE MASTER CYLINDER SOLENOID ()
|
|
|
| A | |
| |
| CHECK FOR INTERMITTENT PROBLEMS ()
|
|