Search Archive

AVIC-X850BT bypass

By totalauto · Mar 04, 2013in Hacks/Mods💬 34 posts👁️ 47,814 views
Page 2 of 2
Posted Nov 12, 2013 · 23:01 UTC#26

Ok guys, help me out!

 

Several months ago I did the bypass and it has worked like a charm, no issues.

 

Well the other day I decided to get behind the head unit to try out the Auto Eq feature (thats where the mic connection is on my x850bt)...long story short, the EQ sucked and now my bypass seems to not work anymore! I am now getting "cannot use this feature while driving yadda yadda" message.

 

Under system info it shows parking break "on", and I can watch videos when not moving, but as soon as I hit a couple MPH it disables the video and get a message.

 

When removing the head unit I disconnected the ground cable at the battery. Im thinking this has something to do with it? Is it possible the head unit is using the GPS somehow to tell Im moving?

 

Any ideas on how to fix? I guess I could have loosened the bypass wire, but highly doubtful. Im really hoping its an easy setting to fix, because I would really like to avoid taking the dash trim out of my car again.

 

Thanks for any help

Posted Nov 21, 2013 · 16:03 UTC#27

Ok.... this worked for me as well.  Relocated the yellow mute wire to the spot left of it and grounded it and the green parking brake wire.  Got the message once so far.... thanks for the post!

Posted Feb 14, 2014 · 01:57 UTC#28

Hi All,

 

Long time lurker but first time poster......so let the noob flaming begin.  And yes, I've done a ton of research on this forum and the web.

 

I bought a 950HB from Crutchf#eld, along with their harness, antenna adapter, sirius adapter and iDatalink Maestro SWC unit.

 

I have done installs in the past so I'm not a total noob, but never a GPS.  I had an installer put it in since I didnt have time due to my job.  He did a decent job and everything works good except for 2 things, which is why I took it back out to try and fix myself:

 

1.  The unit will not dim when the Orange/White wire on the HU is connected to either the Orange OR Orange/White wire of the harness.  I checked the connections thoroughly and even used a multimeter.....no +12v signal from wither wire.  I was able to work around this by connecting the Orange /White wire on the HU to the applicable cable on the hazard light.  Not ideal I know, but nothing else worked.  Is this a problem specific to the harness, Honda Accords, or a bad 950BH?

 

2.  No matter what I try, the 950BH senses movement and the bypass posted here and on YouTube do not work for my unit.  The VSS wire is not connected. 

 

I chose to move the mute wire one pin over (not down), connect it to the PB wire, and ground both. I have tried the following:

 

a.  I tried grounding the light green PB wire/moved mute wire together to the black ground wire of the harness...bypass does not work.

 

b.  I tried grounding the light green PB wire/moved mute wire together to the chassis.....no difference.

 

c.  I checked and re-checked the connection on the moved mute wire....it is inserted properly and in the correct position (1 pin over, next to the red wire)...no difference.  I even opened the white harness back up to make sure it was inserted properly, and crimped it up ever so slightly so as to improve the connection......no difference.

 

d.  So next I did a "reset to default" thinking this might be the ticket....no difference.

 

On the info section of the unit, it says PB is "On" when I ground the light green PB wire/moved mute wire together, regardless of whether this combined combo is grounded to the black wire of the harness or even to the chassis.  When I remove it from either it says PB "Off," so the grounding is not the problem.

 

No matter what I do the unit is sensing movement somehow, even if I just back up or drive a few inches, the nav options grey out and playing a DVD gives me a warning.  I even disconnected the GPS antenna thinking that maybe this was sensing movement....no difference.

 

So as a final test, I pulled the unit out and re-connected everything inside the car and noticed that if the unit is bumped even SLIGHTLY the nav options grey out.  There has to be some gyroscope, compass, or something that signals movement.

 

So I'm at a loss here.  I bought my unit brand new on 12/23/13 and everything was factory sealed so I don't think it was a refurb from Crutchf#eld.  Is there any chance Pioneer started adding something new to sense movement in either the unit or in the latest firmware update to v1.03, which I did after the installer was finished, since I have an iPhone 5S?

 

Reading through a ton of posts on here I really can't believe I can't get this to work.  I know most people who have problems just check their wiring and find the problem.  And some people made the suggestion that there is an internal mechanism preventing this from working  I believe the bypass works, but not on my unit for some reason.

 

I would really appreciate some help and suggestions.

 

PS.......I've seen a lot on here about a software bypass but nothing specific to the 950BH.  Does anyone know if works on this unit?  I'd be willing to try.

 

Sorry for the long post but I wanted to be as thorough as possible.

Posted Feb 24, 2014 · 00:37 UTC#29

I tried to follow this direction, but ran into a problem. The large white connector is not used on my unit - the smaller black connector is used. There are no open pin slots. The light green wire has a parking brake label, and it connects back into the vehicle with the cable-tied bundle. The pink wire has a car speed signal input label and it is not connected (the pink wire just ends).

 

My X850bt unit definitely locks out gps entry in motion. I don't recall putting on the parking brake to enter anything - being stopped was sufficient. So, I don't know what wiring mods might help.

 

Any suggestions?

Posted Feb 28, 2014 · 08:23 UTC#30

I used Jeff's mod on my X950BH and it worked just fine. Only prompt I get is the unit telling me that it detected my parking brake wired inccorectly. It's not an issue because I can still watch movies while in motion as well as input addresses into the GPS.

 

Now I'm not sure if iI'm reading your post correctly, epsilonkore, but you're supposed to do one of two things for the mod to work . . .

 

1) Take the Yellow Mute Wire and move it over to the left one spot (where Jeff has the green wire). Then ground the green parking wire and the nearly switched yellow mute wire.

 

OR

 

2) Do what Jeff did and add a wire to the left of the Yellow mute wire. Then ground the new wire you placed along with the green brake wire. Make sure you leave the unmoved yellow mute wire disconnected. You do not connect this to anything since you've added a wire to replace it.

 

Hope that helps

Posted Feb 28, 2014 · 08:26 UTC#31

A simple solution to this problem is using a relay that tricks the unit into thinking the care brake is up. I use this relay setup daily at my shop if interested let me know. It's full proof and doesn't damage the head unit. Forget the extra pin above the yellow and black wire and forget grounding the light green it doesn't work my relay does

Posted Mar 06, 2014 · 05:53 UTC#32

My x850bt does not use the large white connector. It uses the smaller black connector. Anyone know the hack for this configuration?

Posted Mar 08, 2014 · 03:07 UTC#33

Mvb406 your a piece of shit don't lie to these ppl trying to peddle you wares totalauto's bypass works just fine

 

BigRedd I am also not using the white connector for my radio right now but sadly if you want to do the bypass you are going to have to plug it in and just have it hang there unused. But if you are saying yours didn't come with it I would go back to where you bought/installed it and get it cause they all should come with one.

good luck

Posted Mar 24, 2014 · 16:14 UTC#34

Hello everyone, Noob to this site. as you can see by my first post.

 

Been looking all over this site for someone who might of ran into my same problem.

 

I did my by-pass by cutting a piece of the brake wire and adding it in the slot next to the mute wire. I grounded it in the same location with the parking brake and the normal black ground.  But everytime I turn the radio on it is muted. and I have ATT showing on the right and its grayed out. Once I remove the by-pass wire the radio works fine.

 

I followed the picture on Post one and there is also a video on youtube. The by-pass works but not sure why it stays muted and can't put my volume up. Any help or direction is appreciated.

Page 2 of 2