Reset Transmission Adapts: Notes

WARNING: This page is about a different variant/trim than selected.

Reset Transmission Adapts is a procedure for automatic transmissions in which a series of tests are run to allow the hybrid/EV powertrain control module 1 to learn individual clutch characteristics. Once the clutch data is learned, Reset Transmission Adapts translates it into the adaptive data cells, which the hybrid/EV powertrain control module 1 uses for clutch control during shifts. The scan tool provides initiation of the Reset Transmission Adapts procedure. This procedure is to be used following transmission repair.

The Reset Transmission Adapts procedure must be performed when one of the following repairs have been made to the vehicle. Failure to perform the procedure after one of the following repairs may result in poor transmission performance, as well as transmission DTCs being set:

Transmission internal service/overhaul
Valve body repair or replacement
Control solenoid valve assembly replacement
Hybrid/EV powertrain control module 1 software/calibration update
Any service in response to a shift quality concern

NOTE:

Ensure the following conditions are met before performing the Reset Transmission Adapts procedure:

Drive wheels are blocked
Parking brake is applied
Service brake is applied
Zero percent throttle and no external engine RPM control
Transmission fluid temperature is between 70 - 115°C (158 - 239°F)
Transmission gear selector has been cycled from Park to Reverse 3 times in order to purge air from the clutches.

Use the scan tool to perform the Reset Transmission Adapts procedure. As the procedure is being performed, the scan tool data display will provide operator instructions. Follow the scan tool instructions as required.
NOTE: If at any time during the procedure, required conditions are not met, Reset Transmission Adapts may abort and the process may need to be started again from the beginning. If this occurs, the transmission will be left in a neutral state until the controller is shut down, vehicle OFF and remove the scan tool and wait for more than 30 seconds prior to re-try procedure. If the procedure repeatedly fails, a limit that engineering set is being exceeded and there is possibly a transmission hardware issue.
Once the procedure is complete, vehicle OFF and power down the hybrid/EV powertrain control module 1. You will lose communication to the scan tool.
Ensure you exit back to the main screen in the scan tool, shut the scan tool OFF and unplug it from the DLC or the hybrid/EV powertrain control module 1 may not shut down leaving the vehicle in a neutral state.
Vehicle ON. This will complete the Reset Transmission Adapts procedure.
NOTE: When the Reset Transmission Adapts procedure is completed, the transmission will remain in a neutral state until the controller shuts down. If after 1 - 2 minutes of sitting, with the vehicle OFF and scan tool removed, the vehicle remains in a neutral state, disconnect the battery and wait 5 - 10 minutes and then connect the battery. Reverse and drive should return.
Perform the Road Test .