Learning Control

This transmission is provided with a learning control function which allows the transmission hydraulic pressure to be so controlled that the transmission makes a shift at the optimum shifting point according to the vehicle conditions.

For this reason, there may be cases where shift shocks larger after the power supply is once interrupted (disconnection of battery terminal, flat battery, etc) or immediately after the ATF is replaced.

Once power supply is interrupted, the hydraulic pressure correction values so far learned and stored are erased and the system is initialized (reset to the new vehicle conditions).

The system starts the learning again as soon as the power supply is restored, and after driving for a while, the transmission becomes shiftable at the optimum shifting points.

Lager shift shocks immediately after ATF change are caused by the change in friction characteristics of the transmission internal parts.

Also in this case, therefore, the transmission becomes shiftable at the optimum shifting points after driving for a while.