850tdi - OBD2 confusion

Hi!
I wanted to buy OBD2 kit for my 11/1996 850tdi imported second hand from
Germany, to be able to read error codes, reset them etc...

I was very happy to see 16-pin connector under the OBD2 marked coin
holder in front of the gear stick. Looked a little on the web, and
everything seemed clear.

BUT, while browsing and deciding which tool I will buy - things got more
and more confusing. So, now it seems that my car is not OBD2-ISO
compliant and things are not that easy.

I remember that somebody here has experience with 850tdi model. Please,
help me with the following stuff...

1) is my 11/1996 850tdi OBD2 compliant?
2) which cable & interface & software combo can I use for sure?
- ElmScan ISO 9141/14230 ( http://www.scantool.net )
- Vol-FCR ( http://www.onboarddiagnostics.co.uk/volfcr/index.html )
- Volvo VADIS
3) what cables & hardware do I need to use Volvo VADIS?
4) which pins on my car's OBD2 connector should be wired?
5) is it possible to read & clear EGR, Air Mass Sensor errors?
6) any other hints on 850tdi - OBD2 stuff greatly appreciated...

Thnx a lot.

 

In an earlier contribution to this discussion,

One more question . . .

Is it the same for a 1997-9 V70 TDi? [Same engine, almost same body, ODB2
connector inside storage box under centre armrest]

 

Hi,

Look at my answers to each question line.

Best regards Per

Ans: No, the engine use Bosch MSA 15.7 ECU which has no OBD2 command
language

Ans: Don't look into that solution - it is for a Volvo garage

Ans: You can buy assembled cable together with VOL-FCR or find
one that can assemble yourself on e.q. ebay

Ans: Yes and much more.....

 

Ans: The ECU must be Bosch MSA 15.8 to support OBD2.....

 

In an earlier contribution to this discussion,

I believe that mine is 15.8

This being the case, where can I get a definitive list which explains what
all the codes mean - in case I ever buy an ODB2 interface?

 

Try www.odb-codes.com.
I do not have specific for Volvo.

Best regards

 

In an earlier contribution to this discussion,

Thanks - but the link doesn't seem to work. Are you sure it's correct?

 

850 Tdi and SV70 Tdi using MSA15.7 are not OBDII compliant.

Vol-FCR will work but reads fault codes only, but it will do every other
system in your car as well. (Works with cheap 9 pin serial leads for
VAG-COM, search the net for these, you must have a PC with a 9 pin serial
port)

VAG-COM will work on engine (diesel pump) only, the engine is an Audi unit,
try the shareware version.

Hope this helps.

 

In an earlier contribution to this discussion,

I have a 2000MY V70 TDI MSA15.8

Can you please advise me what hardware and software I would need to
interrogate the OBD2 socket on my car - and where to find information about
the codes, so as to be able to understand what it's telling me.

 

Can you explain how to set up VAG-COM for the
diesel pump and a 850 TDI?

I have tried but without succes. It seems that VAG-COM
does not recognise the ECU in the Volvo and Audi uses
Digifant ECU.

Thanks Per

 

As far as I know the only why to communicate with MSA 15.8 is using the
dealer Vadis cart.

 

From memory the diesel pump is accessed via address 41 in VAG-COM.

 

Just tried it and got the following message:

Controller uses unknown protocol.
Error code: D3B0

Do you know about any work arounds?

The interface test is ok!

Thanks Per

 

Try www.obd-codes.com.

 

THNX very much for all the answers.

If anyone is interested - here is the wiring of my 11/1996 850tdi non
OBD2 compliant, but OBD2 marked connector - the following pins are wired:

-1,3,4,5,6,7,13,16.

BTW, all my search for the OBD2 kit began, cause last week I have
experienced loss of power and overall low performance, and the check
engine light lit up. Car goes well but acceleration is slow. Fuel
consumption is the same, no engine oil consumption, no coolant missing
etc. Drove about 800 kms since...

The only additional thing is some blue smoke after the cold start in the
morning. Blue smoke stops after few kms.

I have cleaned and checked the EGR valve. It was only a little dirty. I
have also checked various hoses for leaks (maybe not all???). Also
checked the electr. connectors, and inspected the resistance and supply
voltage to electromagnetic pressure converter as described in the PDF below.

FYI - the EGR valve and EPW from the PDF are the same. Check the PDF it
may be useful to you

http://www.msi-motor-service.com/ximages/4052.pdf

The only thing left to suspect is the Air Mass Sensor. Well, I hope it
is not the case. I do hope that I may be missing some punctured hose /
tube or bad wires?

Please does anyone have any ideas?

I have booked the repair shop on thursday morning, and I am afraid

Thnx.

 

In an earlier contribution to this discussion,

Ah, that's better - thanks! [I didn't notice that the previous one was
dyslexic].

 

Try the other engine ECU addresses:

11, 21 & 31.

 

Thanks for the advice - but it did not solve the problem.

I still have no connection to the ECU.....

Do you really think it should work?

Best regards
Per