LEARNING PROCEDURE FOR CVT HYDRAULIC CONTROL



PURPOSE


After initialisation, the CVT-ECU does not have any learned value. This may degrade the shifting operation quality. The learning procedure is described below.

LEARNING PROCEDURES


Steps
Item
Contents
1
Learning procedure for engine idling
Refer to GROUP 00 "Learning Procedures for Engine Idling ."
2
Fluid cooling
Park the vehicle in a cooler place, stop the engine, and leave the vehicle until the CVT fluid temperature is lowered to the ambient temperature.
3
Learning in cold engine condition
(1) Fluid temperature measurement
Use M.U.T.-III to measure the CVT fluid temperature. (Check that the fluid temperature is the same as the ambient temperature.)
(2) Line pressure & shift control learning
Let the engine idle for 20 seconds in the D range.
(3) Direct control learning
Run the vehicle at 40 to 50 km/h for 5 seconds in the D range with steady operation.
4
Learning in hot engine condition
(1) Fluid temperature adjustment
caution When the CVT fluid temperature does not increase to 80°C in cold region, raise the fluid temperature to a maximum extent.
Raise the CVT fluid temperature to 80°C.
(2) Direct control learning
The same procedure as for "Learning in cold engine condition"