There isn't one. The components of the VVT are the PCM power train control module, 2 oil control valves, an oil filter for each OCV, and an intake camshaft sprocket/actuator assembly. If your check engine light is on and it's pointing toward VVT issues I would check each OCV filter screen. That is often the culprit.
The PCV valve for a 2000 Lexus rx300 is on the passenger side of the engine. It is on the valve cover near the back.
The PCV valve on a 2002 Lexus RX300 is located on the passenger side of the car underneath the hood. The valve will be on the rear valve cover.
Passenger Side, top of rear valve cover
The underside of the throttle body.
Passenger side of engine on the rear valve cover.
My Lexus dealer in Tucson AZ quoted me $712.00.
According to Wikipedia, a variable valve timing is a "process of altering the timing of a valve lift event, and is often used to improve performance, fuel economy or emissions".
Variable valve timing.
Variable timing valve train
Remove the throttle body. Remove the 4 IAC mounting screws. Remove the IAC.
This component is electrically operated by the engine computer. It (on most vehicles) changes the oil pressure in the variable valve timing system to adjust the valve timing. It is very similar to the solenoids in use inside an automatic transmission.
by oil pan