VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1337

DTC Code DTC Name
C1337 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.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1337

Diameter of the Tire is not Uniform

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

CAUTION / NOTICE / HINT

Note:

When replacing the master cylinder solenoid, perform calibration (Click here).

Tip:

When DTCs C1401 to C1416 are output with DTC C1337, inspect and repair the trouble areas indicated by DTCs C1401 to C1416 first (Click here).

PROCEDURE

  1. CHECK TIRE SIZE

    1. Check tire size and condition of all 4 wheels.

      OK

      Condition of all 4 wheels is normal and tire size is same.

      Result

      Result

      OK

      NG
    NG

    REPLACE TIRES SO THAT ALL 4 TIRES ARE SAME SIZE

    OK

  2. RECONFIRM DTC DTC

    1. Clear the DTCs.

      Click here

      Chassis > ABS/VSC/TRC > Clear DTCs

    2. Drive the vehicle at a speed of approximately 32 km/h (20 mph) or more for 60 seconds or more.

    3. Check if the same DTCs are output.

      Click here

      Tip:

      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

      B

      Chassis > ABS/VSC/TRC > Trouble Codes

    A

    USE SIMULATION METHOD TO CHECK

    Click here

    B

    REPLACE MASTER CYLINDER SOLENOID

    Click here