AutosTalk Forums  

Research Qs on my 91 16V AT valve body....LONG and semi-Technical

Volkswagen Golf, Jetta, Corrado, Vanagon, new models, etc. (rec.autos.makers.vw.watercooled)


Discuss Research Qs on my 91 16V AT valve body....LONG and semi-Technical in the Volkswagen forum.



Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old   
One out of many daves
 
Posts: n/a

Default Research Qs on my 91 16V AT valve body....LONG and semi-Technical - 03-13-2005 , 02:36 PM






First off........is anyone selling an automatic transmission valve body for
me to examine? <g>

How much power is supplied to the solenoids and AT fluid temperature inside
of the transmission?
Is it possible to activate the solenoids at the valve body's wiring plug
with an external power supply to check the operation of the individual
solenoids?

From my testing of the wiring, I did a test of the valve body wiring at the
transmission plug.
I got a slightly high reading of 70 and 68 Ohms for Solenoids #2 and #4
(should be 55-65 Ohms)
I will also have to recheck #6 solenoid and I wonder why it uses a different
power supply pin from everything else inside of the valve body even the AT
fluid temp sensor. AND THAT IS THE ONLY SOLENOID NOT CREATING A DTC.
Is this correct??? I kinda want to imagine what is happening before I pull
out the valve body.

(Total of 10 pins/terminals at the Valve Body Wiring Plug)

Solenoids
1-TCM pin 22
2-TCM pin 23
3-TCM pin 3
4-TCM pin 2
5-TCM pin 24
6-TCM pin 25
7-TCM pin 21

1 pin - ATF temperature sensor uses TCM pins 30 +31 (TCM pin 31 is not
recorded in the Bentley wiring diagram)
2 pins used for power supply at the Valve Body Wiring Plug both originate
from TCM pin 18
(#6 solenoid uses 1 of the these pins, while all the other solenoids
and temperature sensor uses the other)
TCM pin 18 supplies the power to the solenoids and the other pins ground
them out as needed.

Here are the results of my DTCs that force my trans to be put in 3H (Limp
Mode)

VAG-COM Version: Release 303.1

Control Module Part Number: 096 927 731 M
Component and/or Version: DIGIMAT 0811
Software Coding: Diagnose VW
Work Shop Code:
7 Faults Found:
00258 - Solenoid Valve 1 (N88)
36-00 - Open Circuit
00260 - Solenoid Valve 2 (N89)
36-00 - Open Circuit
00262 - Solenoid Valve 3 (N90)
36-00 - Open Circuit
00264 - Solenoid Valve 4 (N91)
36-00 - Open Circuit
00266 - Solenoid Valve 5 (N92)
36-00 - Open Circuit
00270 - Solenoid Valve 7 (N94)
36-00 - Open Circuit
00300 - Transmission Fluid Temp. Sensor (G93)
34-00 - No Malfunction Detected



Reply With Quote
  #2  
Old   
starburst
 
Posts: n/a

Default Re: Research Qs on my 91 16V AT valve body....LONG and semi-Technical - 03-13-2005 , 11:06 PM






Dave, you oughtta copy this entire post and paste it into a message on
the tech auto tranny forum on vortex, if you haven't already. Hopefully
Tantalus will read and respond. He knows all. Hope you figure out your
troubles (saw your posts in yahoo, too).

'luck - Chris

One out of many daves wrote:
Quote:
First off........is anyone selling an automatic transmission valve body for
me to examine? <g

How much power is supplied to the solenoids and AT fluid temperature inside
of the transmission?
Is it possible to activate the solenoids at the valve body's wiring plug
with an external power supply to check the operation of the individual
solenoids?

From my testing of the wiring, I did a test of the valve body wiring at the
transmission plug.
I got a slightly high reading of 70 and 68 Ohms for Solenoids #2 and #4
(should be 55-65 Ohms)
I will also have to recheck #6 solenoid and I wonder why it uses a different
power supply pin from everything else inside of the valve body even the AT
fluid temp sensor. AND THAT IS THE ONLY SOLENOID NOT CREATING A DTC.
Is this correct??? I kinda want to imagine what is happening before I pull
out the valve body.

(Total of 10 pins/terminals at the Valve Body Wiring Plug)

Solenoids
1-TCM pin 22
2-TCM pin 23
3-TCM pin 3
4-TCM pin 2
5-TCM pin 24
6-TCM pin 25
7-TCM pin 21

1 pin - ATF temperature sensor uses TCM pins 30 +31 (TCM pin 31 is not
recorded in the Bentley wiring diagram)
2 pins used for power supply at the Valve Body Wiring Plug both originate
from TCM pin 18
(#6 solenoid uses 1 of the these pins, while all the other solenoids
and temperature sensor uses the other)
TCM pin 18 supplies the power to the solenoids and the other pins ground
them out as needed.

Here are the results of my DTCs that force my trans to be put in 3H (Limp
Mode)

VAG-COM Version: Release 303.1

Control Module Part Number: 096 927 731 M
Component and/or Version: DIGIMAT 0811
Software Coding: Diagnose VW
Work Shop Code:
7 Faults Found:
00258 - Solenoid Valve 1 (N88)
36-00 - Open Circuit
00260 - Solenoid Valve 2 (N89)
36-00 - Open Circuit
00262 - Solenoid Valve 3 (N90)
36-00 - Open Circuit
00264 - Solenoid Valve 4 (N91)
36-00 - Open Circuit
00266 - Solenoid Valve 5 (N92)
36-00 - Open Circuit
00270 - Solenoid Valve 7 (N94)
36-00 - Open Circuit
00300 - Transmission Fluid Temp. Sensor (G93)
34-00 - No Malfunction Detected



Reply With Quote
  #3  
Old   
dave AKA vwdoc1
 
Posts: n/a

Default Re: Research Qs on my 91 16V AT valve body....LONG and semi-Technical - 03-14-2005 , 09:15 PM



thanks Chris
I will try that route also. ;-)
later,
dave
(One out of many daves)


"starburst" <chills (AT) deathtospammers (DOT) utexas.edu> wrote

Quote:
Dave, you oughtta copy this entire post and paste it into a message on the
tech auto tranny forum on vortex, if you haven't already. Hopefully
Tantalus will read and respond. He knows all. Hope you figure out your
troubles (saw your posts in yahoo, too).

'luck - Chris

One out of many daves wrote:
First off........is anyone selling an automatic transmission valve body
for
me to examine? <g



Reply With Quote
  #4  
Old   
dave AKA vwdoc1
 
Posts: n/a

Default Re: Research Qs on my 91 16V AT valve body....LONG and semi-Technical - 04-23-2005 , 09:33 PM



Just in case I did not close this thread, and someone was waiting for the
solution...............

It was damaged insulation allowing water and dirt to create electrical
problems with the auto trans shifting correctly.
http://vwdoc1.tripod.com/personal/in...into_trans.jpg

FIXED now, but I removed the Valve Body harness to thoroughly inspect it.
http://vwdoc1.tripod.com/personal/in...ess_sealed.jpg

The Valve Body was fine!

later all,
dave
(One out of many daves)



Reply With Quote
  #5  
Old   
avishaym
 
Posts: n/a

Default Re: Research Qs on my 91 16V AT valve body....LONG and semi-Technica - 05-02-2005 , 02:42 AM



i bett you have a messed up round 10 pins plug at the end of the wiring
loom...
i should know trust me!


Reply With Quote
  #6  
Old   
dave AKA vwdoc1
 
Posts: n/a

Default Re: Research Qs on my 91 16V AT valve body....LONG and semi-Technica - 05-02-2005 , 11:31 PM



Well thanks for the reply
It was bad/broken insulation causing a change in electrical resistance
inside of the Valve Body Harness.
After finding the problem, cleaning up the area and sealing it with some
silicone..............ALL IS FINE AGAIN.
later,
dave
(One out of many daves)

"avishaym" <avishaym (AT) kkl (DOT) org.il> wrote

Quote:
i bett you have a messed up round 10 pins plug at the end of the wiring
loom...
i should know trust me!




Reply With Quote
Reply




Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off



Powered by vBulletin Version 3.5.4
Copyright ©2000 - 2008, Jelsoft Enterprises Ltd.