C0205

CIRCUIT DESCRIPTION




Speed sensor detects the wheel speed and sends the appropriate signals to the ECU. These signals are used for control of the ABS (& BA & TRAC & VSC) control system. The front and rear rotors each has 48 serrations.

When the rotors rotate, the magnetic field emitted by the 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.

DTC Detecting Condition:

HINT:
DTC No. C0200/31 is for the right front speed sensor.
DTC No. C0205/32 is for the left front speed sensor.
DTC No. C0210/33 is for the right rear speed sensor.
DTC No. C0215/34 is for the left rear speed sensor.

Fail safe function;
If a trouble has occurred in the speed sensor circuit, the ECU cuts off current to the ABS solenoid relay and prohibits the ABS (& BA & TRAC & VSC) controls and the brake system becomes normal.

Wiring Diagram:

Step 1:

Steps 2 - 3:

Steps 4 - 5:

Step 6:

INSPECTION PROCEDURE

HINT: Start the inspection from step 1 in case of using the LEXUS hand-held tester and start from step 2 in case of not using the LEXUS hand-held tester