Lock up Applied
WARNING: This page is about a different car, the 2008 Infiniti M45 and 2008 Infiniti M35. However, it is still accessible from the selected car via links, so may be relevant.
In the lock up applied state, the torque converter clutch control valve is set into the locked state by the torque converter clutch solenoid and lock up apply pressure is generated.
In this way, the torque converter clutch piston is pressed and coupled.