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 TCC releases.
^ The transmission downshifts to Third gear immediately.
^ The engine slows the vehicle down.
2. Move the gear selector back to D4 and accelerate to 60-72 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 Second 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 First gear immediately.
^ The engine slows the vehicle down.