My Avic-D1 was sent to Pioneer for service. The Tech at Best Buy pulled the unit, with the wiring harness, and sent it in to repair the screen. Unit came back yesterday and was re-installed today, but now the bypass lockout is no longer working. The lockout bypass (used procedure posted here in forum) worked great prior to sending in to Pioneer. Any ideas on what went wrong? What is the possibility the Pioneer service tech made an internal change because he/she saw the bypass wire in the harness? What can we check? Any suggestions/help is appreciated.

which bypass? maybe you got the bluetooth update and have to bypass it differently now.

The bypass that allows Nav functions while driving. The Tech confirmed that the parking brake wire was grounded and that the additional wire in the harness was grounded...just as he installed it originally. We're both scratching our heads on what may have changed since the repair.

i know what the bypass does but there are two different types... flashing lights or grounding pins... you probably arent grounded or updated if you are.

The Tech assured me both are grounded, so how do I know if its updated? I'm using navi disc 2005 version 1.2. If it is, is there an additional procedure we need to perform? Thanks for your help, I really appreciate it.

sorry my mistake, thats for the z1. but the d1 should be bypassed only one way. so they are probably being lazy.

Fair enough. I'll head back to see them tomorrow and have them recheck the ground for both. You don't think Pioneer would have changed something in the unit because they saw the bypass wire, do you?

in just your unit? not likely, your not that lucky to get pioneer to design something just for you.

what would happen if the input form the input for the bypass next to the ground went bad

sorry for the last post little misworded so what would would happen if the input for the bypass went bad

the bypass wouldnt work, check to see if theres a good connection maybe pin is popping out?

but me and my friend checked that at the ground and at the connection to the radio harness and both checked good what is the possibility that the input for the bypass went bad

it wouldnt be bypassed

LOL Bummer! That means my mom has been lying to me all these years. I'll head back to Best Buy and have him check it again. Thanks for the help!

np, let us know what it is in the end..

funny so i have no option but to accept that my unit is bad ok thats not funny if you have any advice it would be useful

personally i would look at it myself, but I dont know what your understanding is of this stuff. maybe thats not an option for you. what kind of car, whats the setup?

"03 Expedition, Pioneer MDC, 12" Pioneer Sub with 800watt Pioneer amp. That's it.

well i dont recall that dash and car but you could pull this apart and check connection and such to see what it is.... nothing can take the place of your own eyes on it and measuring/testing things for your own knowledge.

2004 corolla with avic-d1 1 sub amp hooked to sub output, parking brake gorunded, open spot next to ground grounded, no dvd player, no extras at all except for amp and the attempt to make unit nav work while driving during driving.

Yeah, I understand. I'm a real good wrench but marginal on the electronic stuff. The Best Buy Tech has been great and has called some of his buddies to bounce this off. He thinks the port into the radio for the bypass went south. My understanding is that is a test/bench port the service techs use, but not sure.

thats exactly what that is, like if pioneer wanted to check your system they really wouldnt want to install it in a car, this way they can ground it and check it on the counter instead. Just eye ball it and make sure its touching, maybe they severed the trace on the board that that pin is connected to. I doubt it though

We'll give it a look. It's just strange that the bypass worked before the unit went back to Pioneer for service. I'll keep you posted on what we find or figure out. Thanks again!

when you take it to best buy to have it serviced it does not go to pionner it goes to a local repair shop or they send it out to a repair shop ... i used to work there sometimes stuff doesnt even get fixed and comes back with more pproblems ......i would check the pin out again and make sure the pin is all the way in and it didnt pop out and its proably grounded ... another thing is a tech wouldnt care to mcuh proably if he were trying to fix the unit

what mystic says is true, many places dont have service by the manufacture, but in house. In fact Good guys and Circuit city "repaired" a few things for me only to have them come back with the same problems if not more.