Question about Pioneer DEH-1900MP CD Player

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My pioneer deh-1900 mp will not turn on

I recently hooked up a pioneer deh-1900 mp in my 2002 saturn sl1 and it acts like there is no power went back and checked the harness and everything seems to be right. Replaced fuses for radio, and radio (bat) still nothing.

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  • Anonymous Jun 16, 2008

    cant wire it up at all it wont turn on

  • bojacobsmd Aug 09, 2008


    I also have a 1900 DEH,which worked fine until I jumped the vehicle with a lone 2nd battery. The radio now displays an  "AO" message. Removed the radio but do not see a reset or fuse.

    Any suggestions?


    bob j 

  • Mazda Kid Sep 06, 2008

    I have the same kind of problem. Im kind of afraid because I Don't even get an AO message. Mine is just blank and it has been ever since the serpentine belt broke in my 1995 Mazda MX-3 and my battery died. I took out the unit and im not sure how to test it. Can somebody help me?

  • shamis662 Dec 11, 2008

    I have this same problem.

  • Anonymous Mar 23, 2014


  • Anonymous Mar 23, 2014



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  • 113 Answers

Did you use a wire harness adapter or did you connect the wires from the radio directly to the wires in the car? do you have a computer safe test light or a digital vom meter? do not use a conventional test light in this car or an analogue meter to check for power

Posted on Apr 04, 2008

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