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what's the difference between tech 2 and obd2

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34K views 6 replies 5 participants last post by  Big jj  
#1 ·
can anyone help me :crazy:

im a little confused with all these diagnostics tools, can anyone tell me the difference between tech 2 and obd 2 and what they can do and what they cannnot ?????
i have a saab 9-5 estate 99 model
thanks
 
#2 ·
can anyone help me :crazy:

im a little confused with all these diagnostics tools, can anyone tell me the difference between tech 2 and obd 2 and what they can do and what they cannnot ?????
i have a saab 9-5 estate 99 model
thanks[/b]
Apart from two or three thousand pounds? OBD2 will give you some limited fault code identification and virtually no 'live' engine running information. Tech2 is the official Saab hardware/software diagnostic tool which gives all information and the ability to reset a multitude of variables on the car. The high price ensures that it is almost certainly only availble at main dealers and good Saab independent specialists :(
 
#3 ·
OBD2 will give you some limited fault code identification and virtually no 'live' engine running information.[/b]
Not quite- it all depends on the software you are using with the interface. OBDII was orignally intended to aid with diagnostics in the combustion process. It can reveal far more than just fault codes. For example, I have a copy of Proscan which I can use to view and record live data on (to name but a few)

Manifold pressure
Air Mass
RPM
Coolant temp
Intake air temp
Ignition advance
Short & long term fuel adaptation

etc etc

However what it cannot do is alter any values or programme any functionality. Fault code reading is also limited to the fuel system.

This is where Tech II comes in. Apart from being able to read fault codes from all the other systems (airbags, ABS, TCS, transmission, electrical etc etc ) it can also be used to programme functionality such as deadlocking options, alarm beeps, ACC and so on plus the important security elements. Furthermore the TechII reader itself acts as an interface for TIS2000, which is a PC based application that offers far more diagnostic control.
 
#7 ·
is this anyway related to tech 2 http://cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...A:IT&ih=018 check it out[/b]
I think I can explain here. The GM original tech 2 can cover a number of GM models; with just a internal card change. I have Saab, Vauxhall and USA GM cards. The item in the link is a device that will do some of the items that a real GM Tech 2 will do but only on Vauxhall cars MY 1997 to 2004 using a laptop. I also have one of these that I use on simple problems with Vauxhall cars for Air bag and engine check etc. You cannot do any software updates to the ECU in the car with it.

The GM device is a complex expensive beast, mine cost 2K but you can do a lot with it (and break a lot in the wrong hands :wink: ).
With the amount of problems I have had with my Saab it is getting close to being paid for if I had to go to a dealer every time I get a light come on and services etc.

I was told by a dealer they usually charge about 100 notes diagnostic fee each time, the last Vauxhall dealer I used charged 50 notes diagnostic fee. Fortunately the car had just been bought from a car dealer with three months warranty so I got refunded. None of my cars have been back in to a GM dealer to since.
I also have a few friends!!! :thumbsup:so not quite Billy Nomates anymore.