well, i put the 08 head unit in my 06.5 xB and now the aux wont work. Is there anythign thay could be messed up? is there a inline fuse? i check all the plugs like 10 times. Any ideas?

I just got my aux input to work. I went to the dealer and had them pull the wiring diagram for the 06 and 08 xB. The Aux in-outs where the same except the 08 had one extra wire called aux ground. Not to fix this here is what you do.

FInd the plug in the back of the radio that controls the aux input ( it lso controls the steering wheels controls) it has a grey shielded wire, red, white, black, purple, and the steering wheel control wires if you have them.

go to radio shack and buy a package of 1k ohm 1/4 watt 5% tolrtance resistors. These just look like a singel wire with a little ceramic thing in the middle.

Now take one of these and bent it into a U shape. From the back side of the plug ( it can be leftin the radio if you turn it off) put one end in the same spot as the red wire. ( pin location 19 i think) and put the other end in the empty spot
next to the white wire ( pin location 14). Not if this is making contact, with the radio turned on, hit the aux button and it should come on. it now will come on even if nothing is plugged into it as well.

There is the fix, hope you all enjoy. if someone take ics of the back of a radio , and can lable where the parts go

 

I'm running the same set-up as you in my 06.5 and have the same problem with my aux plug(iPod plug is fine btw). My previous head unit was the '06 iPod premium head unit and I'm using all the cables from that.

Anybody have an idea?

It's not a big deal at the moment but who knows if I'll still be using an iPod years from now.

 

Some other people have noticed this too in this post: https://www.scionlife.com/forums/vie...=asc&&start=80
My guess is that while scion kept the same harness, they switched the wires in the harness for the 08's and are thus incompatible with the 04-06 vehicles. Maybe you can remove the wires from the harness and move them to their correct location for the 08 HU.

 

wonder where we can find a wiring diagram for the new xb?

 

Question:
Does the Aux input cable connecting to the rear of the head unit use the connector on the far left (looking at the rear) (20 pinconnector) or the second connector from the left (12 pin) ?

 

i believe it uses the 12 pin that only has 4-5 wires in it. The 20 pin is ipod i believe

 

The connector that is set below (closer to the bottom) the other row of connectors is the iPod interface connector.
The 12 pin connector is usually used for the Sat or cd

 

Awesome, I'm surprised you were able to squeeze any information out of the dealer. Usually they just want to fix it for a small fortune. You might want to post this info on the thread I previously linked to, I think they might be interested in this aswell. Props on finding a solution.

 

So you are using the 08 head unit with the iPod connector and it is working fine? Now the next question is I wonder if you add the resistor as nikbrewer suggest if the iPod setup will continue to work. It has been suggested in another thread that this resistor may actually cause the iPod setup to no longer work. I really want both working. Just wondering if you added the resistor and if your iPod setup is still working.

DAB

 

Aux cable diagram for the 08

 

Yes it's working fine with an iPod.

I tried the resistor mod and it didn't change anything, no idea why since I followed the directions to the letter.

 

So the resistor didn't impact your iPod setup, but actually doesn't work in terms of the aux-input?

I am wondering now if the cable from the head unit on the earlier 06 and 06.5 are even different. Most that have tried the resistor fix say it work, yet no iPod setup working. For you the resistor doesn't work, yet your iPod setup works! LOL

 

Correct, before the resistor mod the iPod interface worked and Aux didn't. After the resistor mod it was still the same, no different at all.

 

Got mine all setup and both aux-input and iPod connector are working. See the other thread on this same topic!

https://www.scionlife.com/forums/viewtopic.php?t=198648

 

i did a DIY with pics to help everyone.
i dont delete my pics like others do
http://www.xbsite.com/forum/thread-1702.html