I found this, but it's blurry, and I'm not able to read it very well... I also don't know if this is for the VVTi engine or the non-VVTi engine.

Hi, I've posted previously on this forum about some valve cover gasket maintenance and I needed some guidance on the vacuum hose wiring on a 1993 SC300 with the original engine. When I took out the throttle body and y-pipe from the intake, I noticed that there were around 11 vacuum hoses connected to the intake. There were about 7 behind the y-pipe and around the EGR. I'm completely lost on where to connect what. When I took out the previously mentioned intake parts, I did not think to label ALL the tubes (I labeled some of them, mainly the ones I could see right on the throttle body) and some of them would have been almost impossible to have labeled without taking out the y-pipe anyway. I wish I had done more research . Are there any sources showing the vacuum hose wiring? Does anyone know the wiring?
Thanks for your time

 

Here you go~
out of the 1993 SC300 manual

 

Thank you! Is the manual free online?

 

unfortunately no... got it from "Library"...