Antilock Brakes and Traction Control System

CODE NUMBER
Scan Tool: 15

CODE NAME
Wheel speed sensor system

CODE DESCRIPTION:
This diagnostic trouble code is output when there is a malfunction (other than broken wire or short circuit) in any of the wheel speed sensor output signals while driving. The following can be considered as the cause of the wheel speed sensor output malfunction.
- Distortion of ABS rotor, teeth missing
- Low frequency noise interference when sensor harness wire is broken
- Noise interference in sensor signal
- Sensor output signal is below the standard value or amplitude modulation is over the standard value. Using an oscilloscope to measure the wave shape of the wheel speed sensor output signal is very effective.
- Broken sensor harness
- Poor connection of connector

PROBABLE CAUSE
- Malfunction of wheel speed sensor.
- Malfunction of wiring harness.
- Malfunction of ABS rotor.
- Malfunction of wheel bearing.
- Malfunction of ABS-ECU.