Contents: Pressure control solenoid (PCS) ↧ Transmission Fluid Temperature (TFT)… ↧ Output shaft speed sensor (SvyhV) ↧
The timing solenoid is mounted directly on the valve body. The solenoid is switched on/OFF (ON/OFF) by means of a control signal from the control unit. The timing change solenoid inside the valve body activates hydraulic control by turning the forward clutch on and off.
Pressure control solenoid (PCS)
The pressure control solenoid (PCS) is located in the valve body and regulates the transmission fluid pressure system. It is internally grounded in the TCS and operates when battery voltage is applied from the TCS through the PCS and back to the TCS.
The battery voltage is controlled by alternating current from the BUT
The current strength shows the position of the throttle.
Transmission Fluid Temperature (TFT) Sensor
The TTZ sensor provides the TCU with information about the transmission fluid temperature.
The TCU uses the TTC sensor information to calculate gear shift points and to activate the torque converter lock-up function.
Input shaft speed sensor (ISS) The ISS sensor is located at the top of the gearbox and records the speed of the automatic transmission input shaft based on the number of revolutions of the direct clutch drum. They transmit a signal to the BUT.
Output shaft speed sensor (SvyhV)
The SvyazB sensor is located in the upper part of the gearbox and records the vehicle speed based on the number of revolutions of the differential gear.
(The article was borrowed from the website CHEVYMAN.RU)