Manual Downshifts
The shift solenoid valves do not control the initial downshift during manual downshifts. All manual downshifts are hydraulic. The solenoid states will change during, or shortly after, a manual downshift is selected.1. At vehicle speeds of 64-88 km/h (40-55 mph) in Fourth gear, release the accelerator pedal while moving the gear selector to D3. Observe the following results:
- The Torque Converter Clutch (TCC) releases.
- The transmission downshifts to 3rd gear immediately.
2. Move the gear selector back to D4 and accelerate to 64-72 km/h (40-45 mph). Release the accelerator while moving the gear selector to D2 and observe the following results:
- The TCC releases.
- The transmission immediately downshifts to 2nd gear.
- The engine slows the vehicle down.
3. Move the gear selector back to D4 and accelerate to 48 km/h (30 mph). Release the accelerator pedal while moving the gear selector to D1 and observe the following results:
- The TCC releases.
- The transmission immediately downshifts to 2nd gear, then to 1st gear.
- The engine slows the vehicle down.