P1120 Isuzu Rodeo Failure

Hello everyone, good evening, my name is Mario. I'm asking for help to resolve a problem with my car, which is the following: It lacks power going uphill. Sometimes, without pressing the accelerator, the car moves forward and shifts gears. It's displaying fault code P1120. Checking online, it says it's a "Throttle motor position sensor 1 - circuit malfunction." I would appreciate it if someone has a wiring diagram to check it or knows what voltages I should expect. My car's specs are:
a 2001 Isuzu Rodeo, 3.2L V6 engine, automatic transmission. Thank you very much, I look forward to your reply.