Diagnostic Port

[julesvreug]

Hi,

I recently purchased a Scangauge II which is a Trip computer, diagnostic scan tool, Gauge display and Service light reseter.

It uses the OBDII protocol and after reading the service manual
found at www.suzukiinfo.com/vitara
It says it uses the ISO format, and checked all the pin digrams and all is ok.

Yet i cant get it to connect and i know it works as tested it on another car.

The manual says you can use a generic scan tool to read codes.
I also know you can send data through the K line etc to for remaping computer, adding in new imobiliser key codes etc.

Has anyone had success in connecting a scan tool to the OBDII port and is there anything i should know?

Ive asked suzuki he said hes still trying to find it out, but i guess they can only tell me as much as there service manuals which i already have has..

By the way i have tested the conector and all wires are ok.

[zbeast]

I had mine checked by a generic tester and it worked. It did have an option for US or Japanese manufacture but I can't remember which option we chose to get it to work. I'm getting the AFR tested next week at the same shop so I'll get my mate to check for any codes again and let you know.

[murcod]

My scanner won't connect to my 2004 2.7l XL-7 - comes up with a communications error. It's a top of the range scanner that's supposedly compatible with all the current standards including CAN Bus.

I've tested it on five other vehicles and it connects on all of them except the XL-7.

[julesvreug]

ive asked suzuki about it, they dont have a answer.

Aparently from what ive been told and whether its true or not, that some models use a GM language which is in between OBD1 and OBD2.

But reading the manual and looking at the port and pin diagram its appears to be using the standard asian ISO format.

So it baffles me why scan tools cant connect.

I may end up getting a laptop adapter and use software to figure it all out, maybe even remap the computer

[RobM]

Did you ever get this working? I'm thinking of buying the ScanGaugeII for my XL-7.

[Stokes]

Originally Posted by julesvreug

Hi,

I recently purchased a Scangauge II which is a Trip computer, diagnostic scan tool, Gauge display and Service light reseter.

Has anyone had success in connecting a scan tool to the OBDII port and is there anything i should know?

If by "scan tool" you mean an OBDII code reader, I just purchased an Innova 3100 for $99 at Wal*Mart two days ago. Works like a charm on my 2004 XL-7. It also works great on my 2005 Lexus 330 and my 1996 GMC Safari Van. Be sure the plug is fully seated in the connector. On my tool, you know it is connected when it starts up. You have to start with the ignition turned off and turn it to the "on" position to actually read the codes. (You do not run the engine while reading the codes.) I realize that a trip computer would have to function while the engine is running, but I would imagine that the code reading part should still be done while the engine is off.

The ScanGaugeII website says that it comes with a "30 day unconditional money back guarantee!!" So it would seem like you can try it risk free.

As a side note: If you want trip information or digital gauge functionality this looks like a neat gadget. But, if you want engine diagnostics, this device doesn't even come close to the code reader I bought. The screen displays the explanation of the code as well as the code value. Multiple codes can be displayed by scrolling through each one. You can even hook my unit to a computer and get a full report of the diagnostic information. So, it really comes down to what you want to do with this thing.

[murcod]

Great to see someone has had some luck, .

Next question - do the Jap models like mine and Jules use the same ECU / OBDII protocol as the USA made versions?

I have heard of people getting Scan Guage II's working by disconnecting certain wires on the OBDII ports (but on other make vehicles.) I wonder if the same mod might fix the connection issues some of us are getting?

[Stokes]

David,

With regard to OBDII codes/protocols, there is a definite difference between GM/Ford products and all others (Chrysler following the European and Asian standards). The best/quickest explanation is here: On-board diagnostics - Wikipedia, the free encyclopedia . This article gives the actual pin differences in the various standards. Then you have to add in the fact that the coding scheme allows for both generic/universal and manufacturer specific codes. So, it takes a fair amount of sophistication in the "reader" device to sort all this out. The unit I purchased seems to handle all this quite well (at least on the vehicles I mentioned).

While I have no personal experience with ScanGaugeII, I would suspect that it is probably not rigged to take all these different issues into consideration. At this point it would probably take a call to their customer service to find out what specific vehicles this unit works with.

Hope this helps,
Bob

[julesvreug]

Hey,

after lots of seaching for what protocol the xl7 uses i found that its KWP 2000

Apparently this protocol allows you to reprogram the ECU

As long as the scan tool supports KWP 2000 it should support the XL7

[murcod]

Mine's compatible with KWP2000 but doesn't work. http://www.uiftech.com/productInfo.j...D=17&intPage=1

"Try before you buy" is really the only safe bet.

Actually I just noticed the latest models are "updateable over the internet" and come with an extra cable..... I've just sent off an Email to the place I bought mine off to try and get the cable so I can update mine! Then it might work?