Control Switch Valve (CSV) & End Clutch (E/C) Valve

Function
Switching the pressure of E/C and SA

Fig 1: Control Switch Valve Function Diagram
Courtesy of KIA MOTORS AMERICA, INC.
2nd Gear
- 2nd pressure is supplied from SA through the CSV.
- SCSV-C maintains OFF as well as 2nd gear.
  
  Fig 2: Control Switch Valve (2nd Gear) Function Diagram
  Courtesy of KIA MOTORS AMERICA, INC.
2nd --> 3rd gear
- SCSV-C maintains OFF as well as 2nd gear.
- The E/C pressure from shift control valve is intercepted at the E/C valve during up-shifting from 2nd to 3rd gear.
- SA pressure is supplied from 1-2 shift valve, but the front clutch and SR pressure is also supplied from the 2-3/4-3 shift valve, so the both SR and SA pressure will be set off.
  
  Fig 3: Control Switch Valve (2nd And 3rd Gear) Function Diagram
  Courtesy of KIA MOTORS AMERICA, INC.
3rd gear
- SCSV-C is changed from OFF to ON.
- The E/C pressure is supplied from 1-2 shift valve at the CSV after finishing the up-shifting from 2nd to 3rd gear.
- SA pressure is supplied from shift control valve, but the front clutch and SR pressure is also supplied from the 2-3/4-3shift valve, so the both SR and SA pressure will be set off.
  
  Fig 4: Control Switch Valve (3rd Gear) Function Diagram
  Courtesy of KIA MOTORS AMERICA, INC.