Toyota Repair Problems? Ask a Mechanic for Answers ASAP
Hello and welcome,
Unfortunately on this system there is not much that can be done without having a scan tool that can access the sliding door module.
You stated you already checked the switch on the left side of the dash, there should be a child safety lock on the sliding doors inspect the switch and make sure they are not engaged.
Is there a wire harness that routes on the bottom of the door?
let me know what you find