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  #121  
Old August 27th, 2014, 12:15
Earthling1984 Earthling1984 is offline
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Re: AW4 Solenoid Replacement write-up (no 56k)

I puchased a new TCU (well, used but supposidly tested and working) off ebay. Still doesn't go into first... WTF.
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  #122  
Old December 17th, 2014, 17:56
1096xj 1096xj is offline
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Re: AW4 Solenoid Replacement write-up (no 56k)

Sorry to bring up an old thread but i am having some of the same problems. Earthling did you ever get it shifting right?
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  #123  
Old April 8th, 2015, 11:31
forrastah forrastah is offline
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Re: AW4 Solenoid Replacement write-up (no 56k)

Quote:
Originally Posted by djlarroc View Post
You're right. I did see these....




It does not say how to check post 98 though, so I guess I will take a shot at testing the tcm, before I drop the pan again.



I have a 2wd 97 Cherokee sport and I ran the codes for a check engine light and got the code saying solenoid B is faulty and when I pull off in drive I'm stuck in 3rd and in 1-2 I don't get 2nd. I read about everything in the forum. I'm having some other problems as far as electrical and going to lose such as my oil gauge not wanting to work also the temperature gauge randomly I unplugged my TCM for a little while and plugged it back in and the check engine light went away and it ran fine. how do I check each piece of the electrical system as in where do I probe to get the right reding? Do I have to expose wires?
I'm good at replacing things but I'm still learning about the rest of it!
Thanks!

Last edited by forrastah; April 8th, 2015 at 11:34. Reason: forgot something
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  #124  
Old April 8th, 2015, 11:44
forrastah forrastah is offline
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Re: AW4 Solenoid Replacement write-up (no 56k)

Also I just wanted to ask if mine would have the aw4 or not I looked it up for a long time but couldn't get what I felt was a definite answer.
I went to the local pick n' Pull to get the shift solenoid but I was told that the 97 was year specific and drivetrain specific? But I had already snagged some off an 01 4wd and figured I might as well take em home they might fit.
P.S. I haven't opened my trans pan yet since I didn't know if it was right.
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  #125  
Old April 8th, 2015, 11:52
ss427ci ss427ci is offline
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Re: AW4 Solenoid Replacement write-up (no 56k)

Quote:
Originally Posted by forrastah View Post
I have a 2wd 97 Cherokee sport and I ran the codes for a check engine light and got the code saying solenoid B is faulty and when I pull off in drive I'm stuck in 3rd and in 1-2 I don't get 2nd. I read about everything in the forum. I'm having some other problems as far as electrical and going to lose such as my oil gauge not wanting to work also the temperature gauge randomly I unplugged my TCM for a little while and plugged it back in and the check engine light went away and it ran fine. how do I check each piece of the electrical system as in where do I probe to get the right reding? Do I have to expose wires?
I'm good at replacing things but I'm still learning about the rest of it!
Thanks!
You'll have to do some searching on how to diagnose the TCM exactly.
But you can try unplugging it and shifting manually through all the gear ranges. If this works, then your TCM is probably at fault. If it does not, then it will narrow it down to the solenoid and/or mechanical fault (i.e. clutch packs, converter lockup, etc.)

To test the solenoids individually, you will have to drop the transmission pan and use a multimeter. Place the red lead on the solenoid wire terminal and the black lead on the bracket mounting screw. The resistance should read between 11-15 ohms. Anything outside of this range and you need to replace it. Another way to check, if you don't have a multimeter, is to pull each solenoid individually and wire to the battery. They should "click" if they are operational.

There are other diagnosis methods, checking shift lag, line pressure, throttle cable, TPS, etc. But let us know what you find out, to help others as well.

I'm working through a transmission issue on a 95 XJ right now and will post up what I find fixes it too.
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  #126  
Old April 8th, 2015, 11:56
ss427ci ss427ci is offline
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Re: AW4 Solenoid Replacement write-up (no 56k)

Quote:
Originally Posted by forrastah View Post
Also I just wanted to ask if mine would have the aw4 or not I looked it up for a long time but couldn't get what I felt was a definite answer.
I went to the local pick n' Pull to get the shift solenoid but I was told that the 97 was year specific and drivetrain specific? But I had already snagged some off an 01 4wd and figured I might as well take em home they might fit.
P.S. I haven't opened my trans pan yet since I didn't know if it was right.
Unless your XJ had some crazy transplant, I'm sure it is a AW4, as that is the only Auto Jeep used in the later years. And yes those solenoids should work, as most parts in a AW4 are pretty generic across the years. Hell you can even use most parts from a Toyota A340 trans if you wanted too.
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  #127  
Old April 8th, 2015, 16:26
forrastah forrastah is offline
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Re: AW4 Solenoid Replacement write-up (no 56k)

What Toyota would that tranny be off of? I have a 92 4runner as well
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  #128  
Old April 8th, 2015, 20:30
ss427ci ss427ci is offline
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Re: AW4 Solenoid Replacement write-up (no 56k)

Not exactly sure. I know an upgraded version was in the N/A Supra and an even stronger version was in the TT Supra.
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  #129  
Old April 9th, 2015, 19:32
forrastah forrastah is offline
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Re: AW4 Solenoid Replacement write-up (no 56k)

Oh yeah I forgot to ask but which color wire is my tcm power supply? I found this video on YouTube I wanted to try where you make 1-2 1st gear, a switch for 2nd that tricks solenoid b, And 3rd is 3rd

What I have to do is wire the power supply to a switch and the switch to the solenoid b wire with a diode between the switch and the tcm. Does this sound correct?
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  #130  
Old April 10th, 2015, 04:56
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Sidewinder CC Sidewinder CC is offline
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Re: AW4 Solenoid Replacement write-up (no 56k)

If you want to check your TCM input circuits you can go by the TCM pin out and test procedures below.

The pin out gives the power input wire colors.



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  #131  
Old January 25th, 2017, 16:48
Mattdel Mattdel is offline
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Re: AW4 Solenoid Replacement write-up (no 56k)

will this work for a 2000 xj?
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  #132  
Old January 26th, 2017, 06:42
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90xj06 90xj06 is offline
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Re: AW4 Solenoid Replacement write-up (no 56k)

replacing solenoids or the wiring diagram?
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  #133  
Old January 27th, 2017, 04:08
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Sidewinder CC Sidewinder CC is offline
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Re: AW4 Solenoid Replacement write-up (no 56k)

Quote:
Originally Posted by Mattdel View Post
will this work for a 2000 xj?
Yes.
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