Question about JVC Car Audio & Video

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My JVC KD-R426 keeps on saying warning check wiring and reset system. I've tried everthing but it still does the same. What must I do

We were told to press the reset button 3 times - this does not work. I've also disconnected the unit and placed it into another car - it still does the same

Posted by Belinda du Preez on

  • Anonymous Mar 22, 2014

    then reset problem

  • Nethaji Ravichandran
    Nethaji Ravichandran Apr 30, 2019

    Hello sir, I have jvc kw av70bt model. It's touch display model I got error "check wiring" what I want to do now

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3 Answers

Josh Park

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Not sure if this will help any other owners since my answer is 4 years late, but this is what I found from another user. Apparently if you mess with the wiring too often, it goes in a safe mode which you need to do some button trickery to unlock the device from it's safe mode. These are the Steps.
1.Disconnect power supply
2.Press [MENU] and [UP arrow] buttons and keep holding.
3. While holding the buttons [MENU] / [UP arrow], connect the power plug again
A. The display will show "DC ERR"
*** if it still shows "Chk wiring ..." repeat the steps above until you get "DC ERR."
4. Press [UP arrow]; the display shows "DC1 ERR"
a. Press and hold [UP arrow] and it will show "DC1 OK"
5. Press [Down arrow], the screen will show "DC2"
a. Press and hold [DOWN arrow] and the display will show "DC2 0"
6. Disconnect the power from the back of the unit.
7. Remove the Face Unit.
8. Reconnect the power from the back.
9. Use a sharp object and press the [RESET] hole for 3 seconds and release.
10. Reinstall the face unit and turn on the power.

Posted on Mar 06, 2016

  • 8 more comments 
  • Kristen Stevener
    Kristen Stevener Jul 01, 2016

    Thank you. This totally did the trick.

  • Terri Charpentier
    Terri Charpentier Feb 10, 2017

    trying this today - thank you ---so far nothing else has worked

  • Shyjith Apr 22, 2017

    Corr. Its. Working......... ths.... sir

  • Sabrina markham Apr 22, 2017

    Thank you so much! I used this today, I don't even know if mine was the correct model lol but it worked!

  • Jojo Humphrey
    Jojo Humphrey May 25, 2017

    So it almost worked for me when i press the down botton it says DC4 instead of 2 but when i hold it down it does go to 0 but rite after it goes to the warning again

  • Tracy Spaulding
    Tracy Spaulding Jul 19, 2017

    THANK YOU!!! too many hours to admit to on this, this thread was my last effort for a resolve before I bought new!!! Very appreciated, it worked!!

  • Turlough
    Turlough Nov 11, 2017

    It worked for me thank you very much.

  • Nethaji Ravichandran
    Nethaji Ravichandran Apr 30, 2019

    Hello sir, I have jvc kw av70bt model. It's touch display model I got error "check wiring" what I want to do now

  • Matthew Stonecipher
    Matthew Stonecipher Sep 02, 2019

    Thank you so much! After 2 years of not having radio i tried this and it worked! Did it ever pop up with the message again after doing this?

  • Paule Sirealone
    Paule Sirealone Jun 24, 2020

    Different model of JVC, your solution worked though! I was close to binning it...!
    THANK YOU!

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rajat singh

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I am engneer i hav also check all wiring it is internly problem it is pcb fault (check wiring then reset) in jvc usb car cd

Posted on Aug 11, 2013

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kenw392

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  • JVC Master
  • 2,226 Answers

It sounds like the internal output IC is bad. It would need to be replace.

Posted on Oct 12, 2012

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Anonymous

  • 55 Answers

SOURCE: JVC head unit problem

Do you have a "RESET" button on your stereo? Check your owner's manual to find it. I have a JVC unit in my car and the reset button is a small hole behind the detachable face. Take the end of a pencil or a pen and insert it in the tiny hole and hold for a few seconds. This should reset the stereo so you can get the CD out. Hope this helps...

Posted on Aug 30, 2008

Lette707

  • 1 Answer

SOURCE: JVC KD-R610 is stuck in Protect mode

Try disconnecting your battery, reconnecting it, and resetting your stereo. If that doesn't work, the constant power (yellow wire) or ignition wire (red wire) may have come in contact with ground or isn't properly connected. Make sure everything is connected properly and try resetting your stereo. If it is still flashing "protect", the unit needs servicing Contact JVC Customer Care Center at: 800-252-5722.

Posted on Feb 07, 2011

kenw392

kenw392

  • 2226 Answers

SOURCE: I've installed my JVC KD-S17

Do you have power going to the red wire?

Posted on Jun 06, 2011

Anonymous

  • 1 Answer

SOURCE: jvc kd-pdr30 ipod problems

The Touch will not work with the KDPDR30. I spoke with JVC and their models that will operate the Touch are KDPDR40, KDAPD49, KDPDR45, KDPDR41 and KDG47 the last two have a cable required.

Posted on Mar 02, 2009

Anonymous

  • 8 Answers

SOURCE: JVC KD-R200 won't power up for more than 5 seconds

Check your wires they might be touching steel around your car mostly look at your yellow and red wires those are the 1' that give it power and light to your radio also check your radio fuse in the back.

Posted on Jun 10, 2009

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