Method and apparatus for controlling motor torques in a multi-mode powertrain system

A method for controlling a powertrain system including an engine coupled via an input member to a multi-mode transmission configured to transfer torque among the engine, first and second torque machines, and an output member, said input member including a clutch element configured to prevent rotation of the engine in a negative direction, the method comprising:

• in response to an output torque request when the engine is in an OFF state:
• controlling motor torques from the first and second torque machines responsive to the output torque request including controlling the motor torque from the first torque machine at a positive torque greater than a minimum positive torque and controlling the motor torque from the second torque machine responsive to the output torque request and responsive to the motor torque from the first torque machine.