WeiDa 2003-2009 TOYOTA 89465-47070 1.5L For PRIUS Lambda

The vehicle sensor is the input device of the vehicle computer system. It converts the information of various working conditions during the operation of the vehicle, such as vehicle speed, temperature of various media, and engine operating conditions, into electrical signals and sends them to the computer, so that the engine is in the best condition. working status. There are many sensors for vehicles. When judging the failure of the sensor, we should not only consider the sensor itself, but the entire circuit that has failed. Therefore, when looking for faults, in addition to checking the sensor, it is also necessary to check the wiring harness, the connector and the related circuit between the sensor and the electronic control unit. Anti-lock braking system (antilock brake system) referred to as ABS. The function is to automatically control the braking force of the brake when the car is braking, so that the wheel is not locked, and is in a state of rolling and slipping (slip rate is about 20%) to ensure that the adhesion between the wheel and the ground is at the maximum value. . During braking, the ABS can quickly determine the locking state of the wheel according to the speed signal from each wheel speed sensor, and close the normally open input solenoid valve on the wheel that starts to lock the wheel, so that the braking force remains unchanged. If it is locked, the normally closed output solenoid valve is opened, and the brake pressure on the wheel will quickly move down due to the pipeline leading to the brake fluid storage tank, preventing the wheel from being completely locked due to excessive braking force. When the braking state is always at the best point (slip rate S is 597%), the braking effect is the best and the driving is the safest.