transmission solenoid

[Viala]

hello it is me again with my problematic transmission 4T60 E

In a last post (with no answers) I asked about te solenoid named MIEV in french.
I said that with 12 volts on it it just make a little buzz and not a clak like the others solenoids. This is on my old tansmision.
I don't know which part it is, but it is wired between the pins E and B on the plug of the transmission.
I have to test on the new one , I have only 1 and 2 gears and code 36 the wires between the plug and the computer are not cutted.

I am coming to NY next month and I will buy spare parts if I found the breakdown.
Do you know where I can find a dealer not too far out of center town


If you have an idea , thank you


Paul

[Christophe Salvain]

Salut Paul
J'ai commandé à plusieurs reprise chez http://www.mileaautogroup.com/ dans le Bronx
Ils sont très sérieux et fiables.
Contacte les avant ton départ pour commander les pièces adéquates histoire de ne pas rentrer à vide.
A bientôt.
Christophe.

In english for our american friends.

Hi Paul
I ordered a lot of time to http://www.mileaautogroup.com/ located in the Bronx.
There are serious et reliable.
Contact them before your journey to order the parts.
Regards.
Christophe

[Viala]

Thank you , merci Sylvain

LMP have you an answer to my post about that solenoid


Thank you


Paul

[LMP]

This is the pressure modulator solenoid for the TCC:
www.avigex.ca/xport/transaxle.jpg
This solenoid controls the pressure so TCC applies progressively instead of on a sudden. THis action takes place within a fraction of a second .
I'd suspect improper action might let the TCC slip if not enough pressure is applied. (?!?!?) It might well happen that several complaints with the TCC shudder could be caused by improper operation of this solenoid and related valve, but going for it is more difficult than disconnecting TCC. May be more investigation into this assertion might become a new topic.

[maxwedge]

A full trans scan should show a code p1811 or p1870 for either tcc slippage, or low or high pressure.

[Viala]

yes, but it is a 92 TS and I am not sure it is possible to scan the transmission.

Thank you


Paul

[maxwedge]

Aha, the year comes at the end of all the info. 92 is electronic and can be scanned with a bidirectional scanner to see solenoid functions, but no trans codes will set.

[nicke66]

Paul,
Have a look at this:
http://www.avigex.ca/xport/dtc36.jpg
Read at bottom to the left: "If a DTC36 is set due to a grounded ckt 1223, you vill have 1st and 2nd gear operation only."

Have you checked this? Is ckt 1223, or G at the connector grounded? (measure the resistance between ckt 1223 or G and ground).

I do not know anything about the pressure modulator solenoid, but my guess is that it should behave the way you describe. I can be wrong about this.

Edit: I see in a other post that you already have read this, but please use a ohmmeter to measure the resistance between: (with the connector unplugged, key off)

E at transmission to G at transmission
E at transmission to F at transmission
E at transmission to B at transmission
A at transmission to D at transmission
G at transmission to chassis ground
F at transmission to chassis ground
A at transmission to chassis ground
E at transmission to chassis ground
B at transmission to chassis ground
D at transmission to chassis ground

At the other side (connector unplugged, with key off):
G at the plug to chassis ground
F at the plug to chassis ground
A at the plug to chassis ground
E at the plug to chassis ground
B at the plug to chassis ground
D at the plug to chassis ground

Write down all the readings (Ohm) and post it here.

[Viala]

thank you for your help , sure I should do it again , more seriously.
I will try saturday and tell you about the results
I 'm going to print your post and check


Bye

Paul

[Viala]

When you say


" use a ohmmeter to measure the resistance between: (with the connector unplugged, key off)"

which connector are you talking about, the one on the transmission or the one going throught the fire wall to the computer!?

Paul

[nicke66]

Originally Posted by Viala

When you say


" use a ohmmeter to measure the resistance between: (with the connector unplugged, key off)"

which connector are you talking about, the one on the transmission or the one going throught the fire wall to the computer!?

Paul

Unplug the connector at the transmission. First ten measurements is on the transmission side, the last six is at the other side (going towards the computer).

[Viala]

Hello Nicke 66

I have done the test with an ohm meter under a nice cold rain
and the results are:


E at transmission to G at transmission 20 ohms
E at transmission to F at transmission 20 ohms
E at transmission to B at transmission 10.4 ohms
A at transmission to D at transmission 85.6 ohms?????????????????
G at transmission to chassis ground Nothing
F at transmission to chassis ground Nothing
A at transmission to chassis ground Nothing
E at transmission to chassis ground Nothing
B at transmission to chassis ground Nothing
D at transmission to chassis ground Nothing

At the other side (connector unplugged, with key off):
G at the plug to chassis ground Nothing
F at the plug to chassis ground Nothing
A at the plug to chassis ground 3 ohms???????
E at the plug to chassis ground 2.8 ohms
B at the plug to chassis ground Nothing
D at the plug to chassis ground Nothing

And a last one beteween Ground and A and after E with key on = 12 volts


If you have an idea , it would be great , the measure between A and D is strange , which solenoid is this.


Thank you and bye


Paul

[nicke66]

Originally Posted by Viala

Hello Nicke 66

I have done the test with an ohm meter under a nice cold rain
and the results are:


E at transmission to G at transmission 20 ohms
E at transmission to F at transmission 20 ohms
E at transmission to B at transmission 10.4 ohms
A at transmission to D at transmission 85.6 ohms?????????????????
G at transmission to chassis ground Nothing
F at transmission to chassis ground Nothing
A at transmission to chassis ground Nothing
E at transmission to chassis ground Nothing
B at transmission to chassis ground Nothing
D at transmission to chassis ground Nothing

At the other side (connector unplugged, with key off):
G at the plug to chassis ground Nothing
F at the plug to chassis ground Nothing
A at the plug to chassis ground 3 ohms???????
E at the plug to chassis ground 2.8 ohms
B at the plug to chassis ground Nothing
D at the plug to chassis ground Nothing

And a last one beteween Ground and A and after E with key on = 12 volts


If you have an idea , it would be great , the measure between A and D is strange , which solenoid is this.


Thank you and bye


Paul

Looking here:
http://www.avigex.ca/xport/dtc36.jpg
A to D is the TCC apply solenoid. It should be 20 Ohm, 85 is indeed strange. Have you tried to measure the other way, looking at the diagram, there is a diod next to the solenoid. What I can see, everything else is OK? Is this your second transmission, the rebuild transmission you bought from US? And now You have only 1st and 2nd drive? Have you tried to measure the same way on your old tramsmission?

[LMP]

Yes do as Nicke says. THe possibility here would be the solenoid is shot and you measre the equivalent resistance of the diode, and then the diode would read infinite if measured in reverse polarity. This would confirm blown solenoid...
ANother option would be to measure A to D with the diode scale..if your meter has one. Then in one direction, it would read diode drop (supposing the solenoid is shot) , around 0.6 volt, and no conduction in the other direction.

[Viala]

Thank's

yes it is on the "new" US transmission that I found that strange 85 ohms
But I don't understand where is the diode you are talking about.
Inside the transmission with the solenoid??

No I have not tried to measure the same way on the old tramsmission.
I gone do that this evening and post after.

So if solenoid TCC is blown what is the result ,: no first and second gears or something else, what is the real role of TCC

On the old transmission (I didn't understood what happened) I had no more gears I read something about stucked drawers, but I don't know if it is the reason. Could it be the same now A stucked drawer that just make 1 and 2
woork.

I don't understand Diode scale, do I have to apply 12 volts to read something


I would like to believe in miracles but I can't


Paul