TPS is a fault flag on the View Hoistway F3 Screen. Equates to Position error at UNTx/DNTx. You want to make sure all the NTS/ETS switches are in the correct state for where the car is in the hoistway and the binary and parity inputs coming back from the selector are correct for that floor. And you’re gonna want to check the tape guides after you check the state of all the inputs.