Toyota Corolla (E120): Circuit description

This solenoid goes on when signals are received from the ecu and controls the pressure acting on the wheel cylinders thus controlling the braking force.

Wiring diagram

Wiring diagram

Inspection procedure

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    Circuit description
    The purpose of this circuit is to prevent the engine from stalling while driving in lock–up condition, when brakes are suddenly applied. When the brake pedal is depressed, this switch sends a signals to the ecm. Then the ecm cancels the operation of the lock–up clutch while braking is i ...

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    Wiring diagram Inspection procedure 1 Inspect radio receiver assy(ill+, ill–) Check that the voltage between terminals at each condition, as shown in the chart. Standard: Repair or replace harness or connector ...

    Circuit description
    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 spe ...