Chapter 12 Electronic Control Systems 277 Copyright by Goodheart-Willcox Co., Inc. Press relief valve Ex Air bleed Line 2 Filter Line (to manual valve) Converter feed Ex Pressure control solenoid Torque sig AFL Filter Pump asm. 10 Slide spring (outer) Slide spring (inner) Slide Rotor Vane ring Press relief valve Ex Air bleed Line 2 Filter Line (to manual valve) Converter feed Ex Pressure control solenoid Torque sig AFL Filter Pump asm. 10 Slide spring (outer) Slide spring (inner) Slide Rotor Vane ring Minimum pump output Maximum pump output Figure 12-17. Pressure behind the pressure regulator valve controls pump output. The regulator valve then controls pump output. (General Motors) A = Control line pressure = Return oil pressure Torque converter clutch regulator valve Front lube Control line pressure Torque converter clutch control valve To rear lube Inter lube Cooler Solenoid off B Torque converter clutch regulator valve Front lube Control line pressure Torque converter clutch control valve To rear lube Inter lube Cooler Solenoid on Figure 12-18. A solenoid is used to control the operation of the torque converter clutch. Clutch apply feel is controlled by line pres- sure. A—The solenoid is off and fluid cannot flow to the apply side of the converter clutch control valve. The converter clutch is released. B—The solenoid is on and pressure flows to the apply side of the converter clutch control valve. (Ford) Decrease Line Rev input Rev input Press reg Boost valve Torque sig Ex Intake Decrease Line Rev input Rev input Press reg Boost valve Torque sig Ex Intake