I got a 2003 EXPY, i want to solve the "check backup aid" so i did the most simple thing, replaced the two ultrasonic sensor, but without success. Now the problem is that I don't know if the faulty part is the PAM or the center radar sensor, and they are both expensive, so I should be sure. There is a way to diagnose if the problem is the PAM or the radar sensor?
Thanks in advance.
Thanks in advance.
