The nearst that I could find is a wireing diagram for the 89661-50160 ECU.
Same 34P-22P-16P-28P connections.
Pin nr's 10,11,15,17,18,22,23 are not the same colours.
I would prefer to use the Lexus ECU,I got the Spitronics ECU as a back-up if I cannot sort it out.
Thanks