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Home >> Toyota >> 2019 >> Highlander Limited, FWD >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Control System - Diagnostic Codes - (Except Hybrid) (2 Of 2) >> Vehicle Stability Control System >> DTC C1337: Diameter of the Tire is not Uniform [11/2016 - ] >> Description

DTC C1337: Diameter of the Tire is not Uniform [11/2016 - ]: Description

The skid control ECU (brake actuator assembly) 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 The following occurs in 3 consecutive times:
At a vehicle speed of 20 km/h (12 mph) or more, there is a 20% difference or greater in the average speed between the front wheels and rear wheels for 20 seconds or more.
  • Tire and wheel size
  • Tire deformation
  • Speed sensor rotor
  • Speed sensor
  • Speed sensor circuit
  • Skid control ECU (brake actuator assembly)