Abstract: A torque converter control system for a vehicle includes a torque converter having a torque converter clutch (TCC) that selectively couples an engine and a transmission for common rotation. A control module regulates the TCC between an engaged state and a disengaged state. The control module monitors an output shaft signal of the transmission and detects rapid deceleration of the vehicle based on the output shaft signal. The control module switches the TCC to the disengaged state when rapid deceleration is detected.

Abstract: A vehicle having an engine that drives a transmission includes a pump that provides fluid to the transmission and a temperature sensor that monitors a temperature of the fluid. The temperature sensor generates a temperature signal. A control module receives the temperature signal and operates the pump to provide the fluid at a first pressure when the temperature signal is below an upper temperature limit. The control module operates the pump to provide the fluid at a second pressure when the temperature signal is above the upper temperature limit.