Question about Pioneer DEH-P440 CD Player

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How to set Pioneer DEH-P440 AUX input ON

Can't find a manual for this Pioneer DEH-P440 anywhere; I'm trying to enable the AUX input so I can listen to my ipod. I think I have tried *EVERYTHING*, there must be a special procedure. SOURCE is either CD or FM1, FM2, FM3, or AM. I need to enable AUX input. Pioneer does not have this manual online. This deck came with the car I bought. It rocks, but I need just a little more. It has the 12 pin connector on the back so I know I SHOULD be able to run an auxiliary device

but this is NFG until I can enable the AUX setting. Any ideas?

I'm thinking if I can't find the manual where I can figure out how to do this, I might as well break down and get a more updated deck (with a manual!)


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  • Hans
    Hans May 01, 2010

    FUNCTION will bring up RANDOM (ON/OFF),REPEAT(ON/OFF),PAUSE(ON/OFF), and something called T-SCAN (ON/OFF), but nothing else. Still no AUX. I tried this with power OFF, then holding down FUNC, then turning ON, no change. Tried this method all sorts of different ways. I can enter the CD title this way, but that's not what i wanna do. SOURCE button same thing. DISPLAY, AUDIO, BAND buttons, same thing. Anyone have a manual for this model?


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Hit the 'source' button.

you might have to turn aux on first, in that case, turn the deck off, hold down.... fuction then turn it on.

Posted on May 01, 2010

Testimonial: "FUNCTION will bring up RANDOM (ON/OFF),REPEAT(ON/OFF),PAUSE(ON/OFF), and something called T-SCAN (ON/OFF), but nothing else. Still no AUX."

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ok, i dug up my old manual and i guess i was wrong,

straight from the book:
1 Press FUNCTION to select AUX.
Press FUNCTION repeatedly until AUX appears
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2 Select AUX on or off with ^/v.
Pressing ^/v will switch AUX between on and
off and that status will be displayed (e.g.,

and as for t-scan: T-Scan play lets you hear the first 10 seconds of each track on the CD.

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To listen to the aux input of the stereo you must press the source button. If you are listening to the radio it will go to CD when you press it if a cd is in the cd deck, if you keep pressing it you should get to the aux input.

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Turn the ignition key to on or accessory position, turn the stereo off, then hold the function key for a couple seconds, the stereo will turn on and you scroll through the menu with the left and right arrow buttons and change settings with the up and down buttons

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