How to Perform Initial Learning

HOW TO PERFORM INITIAL LEARNING

If the automatic transmission or the TCU are replaced, or the. TCU software is overwritten, be sure to initialize the learned values and perform initial learning.
1. Warm-up
Raise the ATF temperature by leaving the vehicle idling or performing a city drive. Check the ATF temperature using the special tester and make sure it is between 66 and 110°C. If the oil temperature is outside this range, work to bring it inside the range.

CAUTION: Do not attempt to raise the oil temperature by stalling the engine.

NOTE: If the oil temperature is not between 66 and 110 C, initial learning cannot be performed. Before learning, check for shift shock or variable speed shock.

2. Garage shift learning
With the vehicle stationary, depress the brake and keep the shift lever in N for 3 seconds. Then, shift from N into D, and maintain this condition for 3 seconds. Repeat this procedure 5 times. Then repeat 5 times in the same way for R.
3. Gear shift control learning
In D, with the throttle opening angle between 25 and 35%, drive until 6th gear and a vehicle speed of 110 km/h or higher is reached. Then, release the accelerator pedal and coast, and bring the vehicle to a stop within 60 seconds. Repeat this procedure 10 times.
4. Check learning results
Check that variable speed shock and shift shock have decreased compared to the conditions before learning.