check backup aid

Discussion in 'Electrical' started by Mariopio, Nov 17, 2018.

  1. Mariopio

    Mariopio Member

    Age:
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    Location:
    Mexico
    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.
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