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Old 07-03-2010, 10:18 AM   #1
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Exclamation TCU wiring diagram for trans Solenoids

In need of wiring diagram for the TCU
need to know which wires go to the trans solenoids #1 - #3 to install my shift rail, and dont have a multimeter to test.
I read that lead terminal C14 is my TC lockup (solenoid #3), C15 is solenoid #2 and C16 is #1.
Just want to verify this info and if someone has a wiring diagram and know the wire colors it would be awesome...
Thanks,
-T
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Old 07-03-2010, 10:49 AM   #2
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Quote:
Originally Posted by tannerp89 View Post
In need of wiring diagram for the TCU
need to know which wires go to the trans solenoids #1 - #3 to install my shift rail, and dont have a multimeter to test.
I read that lead terminal C14 is my TC lockup (solenoid #3), C15 is solenoid #2 and C16 is #1.
Just want to verify this info and if someone has a wiring diagram and know the wire colors it would be awesome...
Thanks,
-T
I sent you a PM that may help...Tj
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Old 07-03-2010, 10:52 AM   #3
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thanks TJ, i already actually have the FSM and service manual for the AW4 trans, but couldnt find a proper diagram anywhere in them.
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Old 07-03-2010, 11:26 AM   #4
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does this look right?
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TCU wiring diagram for trans Solenoids-tcm.jpg  
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Old 07-03-2010, 01:54 PM   #5
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No one huh?
Im pretty sure its the correct diagram, I just hate wiring and would hate to mess this up.....
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Old 07-04-2010, 11:11 AM   #6
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ok well after tearing my passenger side dash apart and NOT finding my TCU,
I found it under the dash on the drivers side, and It's not a C32 plug like the above diagram.
It's a C24 plug, only has C1-C12 and D1-D12, I know its the TCU, but cant for the life of me find a diagram.
Is there an easy way to tell which wires are the Power, Torque Convertor (Solenoid #3), Solenoid #1, and Solenoid #2?
I dont have a multimeter or I would test, I know they read 15-16 ohms.
I tried to run a wire from the fuse block to the plug, to manually make it shift/lock up, but couldnt get it to work.....I feel retarded....Help!!!
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Old 07-04-2010, 11:15 AM   #7
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hey tanner, i don't know anything about your problem, but harbor freight got a multimeter for like 5 bucks. i've been using it problem free for 3 years.
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Old 07-04-2010, 11:18 AM   #8
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Quote:
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hey tanner, i don't know anything about your problem, but harbor freight got a multimeter for like 5 bucks. i've been using it problem free for 3 years.
thanks, ill check that out tomarrow.
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Old 02-02-2013, 11:41 AM   #9
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Did you ever figure out what wires go to each solenoids?
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Old 02-20-2013, 10:42 PM   #10
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sorry for hijacking, but does anyone have/ know of correct voltages for the TCM wiring harness? My 95 XJ is stuck in 4th no lockup D, stays in 1st in 1-2 selection, and 3rd selection gives me 3rd no lock up. Its like the TCM is unplugged but it is. I have checked said TCM in another cherokee and its fine. any help would be appreciated.
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Old 02-21-2013, 04:50 AM   #11
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Quote:
Originally Posted by RedHorsey View Post
sorry for hijacking, but does anyone have/ know of correct voltages for the TCM wiring harness? My 95 XJ is stuck in 4th no lockup D, stays in 1st in 1-2 selection, and 3rd selection gives me 3rd no lock up. Its like the TCM is unplugged but it is. I have checked said TCM in another cherokee and its fine. any help would be appreciated.
There's an inline fuse to the TCU and a resistor on my '87. If there's no power to the TCU, it won't shift unless you move the shifter. Here's a good thread on:
http://www.naxja.org/forum/showthread.php?t=1053970
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