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

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    Shift position uses
    *: Shifting to the D position allows the system to select a gear suitable for driving conditions. Setting the shift lever to the D position is recommended for normal driving. ■Downshifting restrictions The shift lever cannot be downshifted if the following speeds are exceeded. mph (km ...

    Inspection procedure
    Hint: start the inspection from step 1 in case of using the hand–held tester and start from step 2 in case of not using hand–held tester. 1 Inspect brake actuator assy Select the datalist mode on the hand–held tester.  check the operation sound of the abs pump motor when operat ...

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