Описание
Types of repairs Checking sensors Repair of valve body housing Replacing the regulator valve Dodge Caliber, Nissan X-trail, Nissan Qashqai, Nissan Teana, Nissan Tiida, Mitsubishi Lancer, Mitsubishi Outlander, Mitsubishi Galant, Mitsubishi GalantASX, Peugeot 4007, Renault Scenic, Renault Megane, Renault Fluence, Renault Koleos. Checking pressure sensors of JF011E CVT valve body The interaction between the driver and the mechanical part of the CVT takes place through the valve body. Switching the Parking / Revers / Drive modes, raising and lowering the speed - all these actions are controlled by the valve body using the pressure of hydraulic fluid (oil). The oil pressure level in the valve body is measured by pressure sensors and transmitted to the electronic control unit, i.e. From how accurately the pressure will be measured depends the work of the entire CVT. The operating principle of the pressure sensor is the following: when the oil pressure increases, the resistance of the sensor increases, which causes an increase in the voltage at the output of the pressure sensor. By reading the output voltage level, the electronic control unit understands the oil pressure level in the valve body. The failure of the pressure sensors can be the cause of activating the CVT emergency mode , slippage of the belt, thumps when switching Parking / Revers / Drive and overheating. Specialists of the Maktrans company developed a special scheme in order to check the pressure sensors. The circuit consists of a power supply unit, connectors for connection to pressure sensors and a multimeter.When the 220 V power supply is connected to the mains, it supplies a constant voltage to the pressure sensors. On the other hand, the output voltage, which is measured by a multimeter when the oil pressure in the valve body is changed, is removed from the pressure sensors. The output voltage measurements are compared with the table values of the CVT manufacturer s manual. To create working pressure a
