Shifting Control

SHIFTING CONTROL

1. NORMAL SHIFTING CONTROL
Based on the input signal information such as inhibitor switch, vehicle speed and accelerator pedal opening angle, TCM controls each solenoid and automatically shifts to an appropriate gear position according to the shift schedule.

2. ENGINE COOPERATION CONTROL
When shifting, TCM outputs torque down request signal. Receiving the signal, ECM retards the ignition timing of each cylinder to temporarily reduce the torque developed by the engine. In synchronization with this control, TCM constantly monitors the shifting status using the vehicle speed sensor and turbine sensor, and performs feedback control to obtain optimum shifting. This control enables smooth and comfortable shifting under any conditions.

3. CONTROL AT HIGH OIL TEMPERATURE
When ATF oil temperature is extremely high, the shift schedule is automatically changed so that temperature rise is minimized.

4. CONTROL AT LOW ATF OIL TEMPERATURE OR LOW ENGINE COOLANT TEMPERATURE
When ATF oil temperature or engine coolant temperature is extremely low, at engine start for example, the shift schedule is automatically changed to actively raise the oil temperature.