Electric Powertrain and Method of Calibration

An electric powertrain includes a transmission connected with a traction motor to receive motive power embodied as torque and speed. To adjust the torque and speed, the transmission has a plurality of gear sets that are selectively engaged by actuation of associated hydraulic clutches. For actuation, the hydraulic clutches receive hydraulic fluid from a hydraulic system. To calibrate actuation of the clutches, the traction motor is run at a reduced speed range under calibration conditions while the hydraulic system is operated at a operational speed range. Further, a torque/current limit is applied to the traction motor to limit torque applied to the transmission during calibration.