Part Throttle Detent Downshift

At vehicle speeds of 64-88 km/h (40-55 mph) in Fourth gear, quickly increase the TP angle to greater than 50%. Verify the following results:
^ The Torque Converter Clutch (TCC) releases.
^ The transmission downshifts to 3rd gear immediately.
^ The 1-2 Shift Solenoid valve turns Off.
^ The 2-3 Shift Solenoid valve remains On.