Another Nav diagnostic code

[ryaus1]

2005 SRX: The 1791 code works fine on my unit for enabling DVD playback.

I would like to share some findings/thoughts which may be of interest.

Firstly related to a recent posting - when I enter 1791 the keypad screen remains, all other codes I tried default to the Cadillac logo screen.

But here's what I found out. The "feature programming" function which is normally disabled when driving also becomes available after entering 1791. Did anyone else notice that?

Here is my personal take on this .. I believe that 1791 disables some device specific locks when driving, i.e. feature programming, DVD eject, DVD playback. I think the Navigation system is running in it's own software environment, therefore the same code doesn't have any impact (= enabling input on the Navigation system). To me it seems that there is a device firmware, and a separate Navigation app which is on the DVD. Both being separate. I guess what I am really saying is that we yet don't know whether we need to look at the device firmware, or the software code on the DVD...

BTW - I love this site, and thanks for all the great contributions!

[kupo]

I found a company that services the denso units. So what I am thinking is that they can't have to go through the agree screen every time they power these up after working on them. There has to be codes that enable them to check the units. Now someone that is more tech savvy than I, should call and see if they can get any info on these units.

From: rnee@autonav2000.com
[Add to Address Book]
To: mlburak@comcast.net
Subject: Re: Do u service Denso units in 02 to 05 Devilles?
Date: Sunday, May 28, 2006 1:23:09 PM [View Source]



Yes, we do. Please contact us during the week between 10 a.m. - 6 p..m. at (408)298-8188.

We will return after the long weekend on Tuesday.

Thanks,
Auto Nav 2000 Plus
(408)298-8188

[eintier]

Originally Posted by dechief4

Hit - I also have a Grand Prix-GXP which has the same basic NAV unit as the 'Vette. Which button sequence did you use to get to the diagnostic screen on that unit? TIA
Dechief

There are two ways to get there. The most common is: go to the Nav screen and press "menu" then touch the screen to the right of the yellow Nav Menu and hold, you will get a new screen that shows a keypad and asks for "diag pin".

The other one involves putting in a video DVD and then holding down for a few seconds on some part of the screen that I can't remember.

[selwyn]

Will this work for a 2006 STS. I want to be able to use the phone and Navigation system while driving. I don't want to stop before be able to use. Can anyone help me on this.

[Vandal]

According to Delphi's site (http://www.delphioffer.com/tnr800/prodinfo.html), the Cadillac Escalade has been host to the TNR800 from Delphi since 2003.

Their FAQ's state the following;

Can TNR800 play DVD movies on its display?
Even though the product has the capability to play video on its display, current product configuration doesn’t have it available in order to comply with safety laws. There are modules in the aftermarket that can activate this capability but it is not supported and recommended by Delphi. In addition, customers who use these modules will lose the Delphi warranty.

http://www.delphioffer.com/tnr800/faq.html#dvdmovies

I have tried to access the code input screen mentioned here on my TNR800 without success, and have searched for days to find one of these "after market modules" they mention.

1.) is the TNR800 the same unit you guys are discussing? (probably not, but sounded like from FIDGAF's comments it could be)

2.) anyone seen in your research anywhere I might find a discussion specifically about the TNR800

quite frustrated, any help is appretiated.

[ssstealth]

The only aftermarket interface that I have found is available here from coastaltech

They have not responded to any questions about usability on the STS unit which is very similar.

[SportBiker]

Folks,

I Read Every Post- Great Work So Far Re: The Nav Unlock Code. A Friend Who Works For A Major Car Dealership Said He Thinks That The Vss Is Being Used To Detect Motion For The Nav. He Also Said That Is He Couold See The Wiring Diagrams For That Area Of The Car, He Maybe Able To Fool The Nav Unit, Like Someone Said Earlier. Can Anyo Ne Send Me The Wiring Schematic For That Area? He Htinks The Vss Is Branched Off For Several Functions And One Of Them Is For The Nav.

Also Am I Correct In The 'menu>touch/hold To Right Of Yellow Menu Screen>enter 1791' To Enable Dvd While Driving?

Btw I Will Contribute Another $20 To The Solution.
Bob

[indycar]

In Volume 3 for the GMT/06-SRX Service manual on page 8-397 is the schematic you are looking for. The radio/vss is bottom left. Hope this helps!!

[ssstealth]

I did find that the "9448" code does work in the 2006 STS-V to open the diagnostics screen. "1791" and "1971" do nothing.

[CadillacSTS2003]

thought ppl would like to know
http://forums.corvetteforum.com/show...&postcount=152
that works for our cars too

[poodleface]

Originally Posted by CadillacETC1997

thought ppl would like to know
http://forums.corvetteforum.com/show...&postcount=152
that works for our cars too

So, are you saying that I can add MP3 support to my 2004 SRX?

[da_thrilla]

is anyone willing to give this a try? i dled the file, seems to be legit...im not gonna risk doing it because the dealer service is shit in switzerland and god forbid my satnav crashes...

[CadillacSTS2003]

i asked my service rep at my dealer
they do chevys and lacs
they told me the software on the units is the same and it would work

[poodleface]

I would like to try this, but I am not going to based on one service rep. That's a big gamble, since it would brick the NAV unit if it wasn't the right software. And I'm pretty sure that isn't covered in the warranty.

[CadillacSTS2003]

should be warrantied...
and they told me they did it to a deville
they have no reason to lie