Toyota Corolla (E120): Circuit description

The speed sensor detects wheel speed and transmits the appropriate

The speed sensor detects wheel speed and transmits the appropriate signals to the ecu. These signals are used for control of the abs control system. Each of the front and rear rotors has 48 serrations.

When the rotors rotate, the magnetic field generated by the permanent magnet in the speed sensor induces 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.

Hint:

Hint

: Dtc no. C0200/31 and c1235/35 is the right front speed sensor.

Dtc no. C0205/32 and c1236/36 is the left front speed sensor.

Wiring diagram

Inspection procedure

    Share this page:

    Other materials:

    RCTA function
    ■ Operation of the RCTA function The RCTA function uses rear side radar sensors to detect vehicles approaching from the right or left at the rear of the vehicle and alerts the driver of the presence of such vehicles by flashing the outside rear view mirror indicators and sounding a buzzer. Appr ...

    Pre–check
    1. Diagnosis system Release the parking brake lever.  check the warning lights. When the ignition switch is turned on, check that the abs warning light and brake warning light goes on for 3 sec. Hint: when the parking brake is applied or the level of the brake fluid is low, the ...

    Circuit description
    Monitor description The ecm commands gearshift by turning the shift solenoid valves ”on/off”. When there is an open or short circuit in any shift solenoid valve circuit, the ecm detects the problem and the mil comes on. Illuminating the mil, the ecm performs the fail–safe and turns ...