Linear pressure solenoid
The linear pressure solenoid, is located in the transmission control system, which is fitted on the front edge of the transmission. The linear pressure solenoid, consists of an electrical coil that controls a hydraulic valve. The solenoid is controlled with a pulse width modulated (PWM) voltage and is grounded via the transmission control module (TCM). The solenoid has a linear hydraulic function. The hydraulic valve is controlled by the varying current resulting from the current pulse ratio. With a high pulse ratio, i.e. high current strength (approx. 1 A), the system pressure is low. With a low pulse ratio, i.e. low current strength, the system pressure is high. In the event of an open circuit the system pressure is at a maximum, resulting in hard shifting. The hydraulic valve is then fully open.
The solenoid can be diagnosed.
The linear pressure solenoids are located in the transmission control system, which is fitted on the front edge of the transmission. The designation of the solenoid is linked to the component (clutch/brake band) that the solenoid controls. The linear pressure solenoids consist of an electrical coil that controls a hydraulic valve. The solenoids are controlled with a pulse width modulated (PWM) voltage and are grounded via the transmission control module (TCM). The solenoids have a linear hydraulic function. The hydraulic valves are controlled by the varying current resulting from the current pulse ratio. With a high pulse ratio, i.e. high current strength (approx. 1 A), the system pressure is low. With a low pulse ratio, i.e. low current strength, the system pressure is high. In the event of an open circuit the system pressure is at a maximum, resulting in hard shifting. Here, the hydraulic valve is fully open.
The solenoids can be diagnosed.