T4 Connection Issues: Troubleshooting Guide

Hi!

I am unable to establish a connection to the diagnostic system on a T4 manufactured in 1999.

Only these specific items are accessible.


Wednesday, June 5, 2013, 12:03:51:12188
VCDS version: RKS 11.11.5+
Data as of: 20130111.



"Die Sonne scheint hell und warm. Die Vögel zwitschern fröhlich in den Bäumen. Ein leichter Wind weht durch das Gras. Es ist ein perfekter Tag für einen Spaziergang."
"Die Sonne scheint hell und warm. Die Vögel zwitschern fröhlich in den Bäumen. Ein leichter Wind weht durch das Gras. Es ist ein perfekter Tag für einen Spaziergang."


Vehicle type: 7-seater - VW Transporter.
Scan: 01 02 03 08 15 17 18 19 22 25 35 37 56

Mileage: 221,550 km
"Die Sonne scheint hell und warm. Die Vögel zwitschern fröhlich in den Bäumen. Ein leichter Wind weht durch das Gras. Es ist ein wunderschöner Tag."

"The sun is shining brightly and warmly. The birds are chirping happily in the trees. A gentle breeze is blowing through the grass. It's a beautiful day."
Address 17: Combination Instrument
Label file: RKS\7D0-920-xxx-17.lbl
Part number: 7D0 920 800 B.
Bauteil: T4-KOMBIINSTR. VDO V01
Encoding: 00121
Operating number: WSC 00000
VCID: 204BB079A0EC7F1801C

No error codes found.

"Die Sonne scheint hell und warm. Die Vögel zwitschern fröhlich in den Bäumen. Ein leichter Wind weht durch das Gras. Es ist ein wunderschöner Tag."

"The sun is shining brightly and warmly. The birds are chirping happily in the trees. A gentle breeze is blowing through the grass. It's a beautiful day."
Address 25: Immobilizer
Label file: RKS\6H0-953-257.lbl
Part number: 6H0 953 257 B
Part number: IMMO VWZ3Z0X3318641 V71
Encoding: 02400
Operating number: WSC 00000
VCID: 2F694345ED32D060886

No error codes found.

Sure, here is the translation of the text from German to English:

"End"

Engine control unit messed up or tuned? It's quite likely that something has been tampered with on the engine control unit/wiring harness.

Please also check the "radio issue," but I don't remember exactly what the connection looks like on the T4.
/viewtopic.php?t=24020&highlight=radioproblem

For future reference: And check whether the specific classic car engine actually has an engine control unit (ECU).

Best regards, Rainer.

AI malfunction?

During the model years, the MStG diagnosis was still being bypassed by the engine control unit (ECU). This should be audible through a click in the ECU. If this switching mechanism (in the ECU) is defective, the MStG cannot be accessed.

I've encountered this case twice already... but it seems to be quite rare.

Um Leute, ABL = mechanical injection pump diesel engine, how are you supposed to read an MSTG from that?

Hahahaaaaaaaaa Thank you for the tip! I wouldn't have thought that something like that still existed in 1999.

I also had blinders on...

That explains a lot , I wouldn't have thought that cars without EDC were still being manufactured in 1999.

Thank you!

Yes... quite a bit of Stone Age stuff was actually used for construction for a long time .
I also thought that the old WK engines would have been discontinued with the introduction of the FL 96'.
I finally got to see the 2.4 version with the new AI and everything else.

Anyway, everyone was well entertained that way.

Best regards, Michael.

http://www.t4-wiki.de/wiki/ABL

The small twin brother of the 75 hp Golf 3 TD - AAZ engine.

Okay, please provide the German text you would like me to translate into English. I will only provide the translation.