Which wire on the TCU is for duty solenoid C ?

[ericem]

Hi, I am looking for a pinout of the TCU connector. Trying to find the duty solenoid wire, I want to watch is there is voltage being passed through all the time even while the wheels are spinning per say. I guess I could test the AWD by simply putting a switch so that there is no power, and it SHOULD technically lock up. If not I guess it is indeed the clutch or duty solenoid. Just figure I can test this, then if it seems to work without a awd delay, then I will try a different tcu. Thanks.

[ericem]

Found what I was looking for.

http://www.surrealmirage.com/subaru/fil ... _page2.jpg

http://www.surrealmirage.com/subaru/fil ... _page1.jpg

Question though, for page 2, under fwd switch, it says with fuse installed votage is less then 1. Without it installed 10-14v? Shouldn't it be opposite?

[juice91si]

i think there is a misprint on there, i think it should be opposite too.

i did the same thing as you, intercepted the wire from the tcu and measured the voltage while i drove around, i think the wire was white with a black strip..

[ericem]

Did you find the voltage going to like 0-1v when the wheels were slipping?

[ericem]

I took out the TCU, want to open it up and clean up any dust that might be in it.

Is this the correct TCU?

http://s81.photobucket.com/albums/j202/ ... 008072.jpg

[ericem]

Well looked on the internet at this part number on the TCM

31711aa822

Says its for a 91 on the one site that shows up. The dealer ships I called have part numbers that are 31711acXXX not aa. So I think this is definitely the wrong tcu which was to begin with the problems as to why it drives the way it did after the tranny rebuild.

[ericem]

Grr bad news. TCM is fine. Voltage drops to 0.1-0.5v before I can even tell the wheels are spinning. Dammit really was hoping it was the TCM since I can definitely swap that out easily compared to dropping the rear end of the tranny in -10.