Circuit Description
WARNING: This page is about a different car, the 2002 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- DTC No. C0200/31 and C1330/35 are for the right front speed sensor.
- DTC No. C0205/32 and C1331/36 are for the left front speed sensor.
- DTC No. C0210/33 and C1332/38 are for the right rear speed sensor.
- DTC No. C0215/34 and C1333/39 are for the left rear speed sensor.
The speed sensor detects a wheel speed and sends the appropriate signals to the ECU. These signals are used to control of the ABS and VSC system. Each of the front and rear rotors has 48 serrations.
When the rotors rotate, a magnetic field emitted by a permanent magnet in the speed sensor generates an AC voltage. Since the frequency of this AC voltage changes in direct proportion to the speed of the rotor, the frequency is used by the ECU to detect the speed of each wheel.