Full Throttle Detent Downshift

At vehicle speeds of 64 to 88 km/h (40 to 55 mph) in 4th gear, quickly increase throttle angle to its maximum position.

Verify the following conditions:
- The TCC releases.
- The transmission downshifts to 2nd gear immediately.
- The 1-2 Shift Solenoid is off; the 2-3 Shift Solenoid is on.