VSS is working surprisingly. Must be wired differently on these cars. Yea I figured reverse out. I’ve got a manual ECU but didn’t know if there was a way to do it with the auto ecu still in place. Yes I have CELs but I haven’t checked them yet. Trying to get everything cleaned up.Reverse is easy, there’s a plug on the AR5 that looks like a 1” nut filled with epoxy and has two wires potted in the epoxy. You just splice the IS300 reverse wires into them.
Cruise probably won’t work without a manual ecu. It requires all the throttle sensors - Apps1&2, tps1&2, and the dbw controls to function. Do you have any CEL’s? How about your VSS, is it working?