Line Pressure Solenoid Valve
WARNING: This page is about a different car, the 2002 Nissan Sentra, 2002 Infiniti G20, 2001 Nissan Sentra, and 2001 Infiniti G20. However, it is still accessible from the selected car via links, so may be relevant.
Line pressure solenoid valve regulates oil pump discharge pressure to suit driving condition in response to signal sent from TCM.