Oil Pressure
WARNING: This page is about a different car, the 2001 Lexus IS 300 and 2001 Lexus GS 300. 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 7.0 psi (0.5 kg/cm2 ) at idle, and about 47 psi (3.3 kg/cm2 ) at 3000 RPM.