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Step 8: Dynamic Shift Learning Procedure
The next step is to carefully drive the vehicle, allowing the controller to learn
shift patterns. Before beginning, make sure the conditions of the checklist below
are met.
o Check for Errors
Check the controller display to see if there are any error messages
shown. If there are, check the troubleshooting section at the end of
this manual for details. If “Clutch Learn Data Invalid” is displayed,
go to Diagnostics>Clear Learn>Clutch Learn as seen on page 34.
o Don’t Start in Second Gear
It is important to complete learning before activating any “Start in
2nd Gear” options in the FLEX-SHIFT tab. If the transmission
starts in second while still learning, it will result in erroneous data
and hard shifts.
o Use Softer Shifts
If you plan on having a soft shift and firm shift calibration, it’s best
to have the controller learn using softer shifts. This is because soft
shifts require fine control and the tuning needs to be optimized for
them.
o Warm Up the Transmission
Warm the transmission to a minimum learning temperature of
130°F (54°C), if possible, before driving the vehicle for the first
time. Use the built-in display to monitor temperature by turning the
knob to °F or °C while in the main menu.
Drive the vehicle, accelerating from a stop to sixth gear, and repeat several
times. Start at light throttle and work your way up progressively to higher throttle
openings as shifts begin to improve. The first few passes might not feel normal,
but this is to be expected while the controller is learning the transmission’s
behavior.
If possible, continue driving the vehicle after the transmission fluid temperature
has reached 165°F (74°C) and complete several shift sequences at different
throttle openings. Once you’ve completed the first test drive, make sure that the
transmission is operating normally and check the controller for error messages.
Finally, you can make adjustments to the tuning calibration, either using the
built-in display’s tuning menu or by connecting the controller to a pc with
Shiftware.
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