940 SE L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT (1991)
Pressure Supply
1st-3rd Gears
Line pressure is supplied at A and the valve moves to the upper position.
The combination of line pressure and spring force prevents the valve from moving downwards when governor pressure B is increased.
Line pressure C applied to the top of the changeover valve holds the valve in the lower position.
4th Gear
Line pressure is now supplied to the middle port D of the signal valve.
Since the governor pressure B is not sufficiently high to move the valve downwards, the valve is held in the upper position by spring force.
The changeover valve remains in the lower position.
Lock-up Function Engaged
Pressure Supply
