Oil Pressure
WARNING: This page is about a different car, the 2002 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
With engine at normal operating temperature, oil pressure should be at least 4.2 psi (0.3 kg/cm2 ) at idle, and 43-85 psi (3.0-6.0 kg/cm2 ) at 3000 RPM.