Automatic transmission solenoid valve Ford Focus 2
The automatic transmission solenoid valve is an important transmission component that is responsible for controlling the flow of transmission fluid in the system. The Ford Focus 2 uses several solenoid valves, each of which has its own separate function.
Location
The solenoid valves are located in the automatic transmission valve body. The valve body is a solenoid unit that controls the flow of transmission fluid, directing it to the various clutches and brake bands in the transmission.
Functions
Various solenoid valves in the Focus 2 automatic transmission perform the following functions:
* Line Pressure Control Valve (PCS): Regulates the line pressure that maintains pressure on clutches and brake bands.
* Shift Valve: Shifts gears by directing transmission fluid to the appropriate clutches and brake bands.
* Torque Converter Lockup (TCC) Valve: Locks the torque converter, improving transmission efficiency at high speeds.
* Pressure Regulator Valve (PCV): Regulates oil pressure in the automatic transmission oil pump.
Malfunctions
Faulty solenoid valves can cause a variety of automatic transmission problems, including:
*Hard gear shifts
* Gear slippage
* Transmission fluid leaks
* Limp Home modes (emergency mode)
Diagnostics and replacement
Diagnosing problems with automatic transmission solenoid valves requires specialized equipment, such as an OBD-II scanner and transmission pressure gauge. The solenoid valve must be replaced by a qualified transmission mechanic.
Recommended Maintenance
To extend the service life of automatic transmission solenoid valves, it is recommended to perform the following actions:
* Change the transmission fluid and filter regularly.
* Use high-quality transmission fluid recommended by the manufacturer.
* Avoid aggressive driving, which may place additional stress on the transmission.