Question:
The ECU (electronic control unit) is the brain of the ABS system. It is responsible for monitoring the wheel speed sensors and activating the ABS system when necessary. The wheel speed sensors are mounted on the back of the brakes and detect the speed of each wheel. If you see the ECU and wheel speed sensor wires under the vehicle, then the vehicle is equipped with ABS. If you do not see the ECU and wheel speed sensor wires, then the vehicle is not equipped with ABS.
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