Please help me Shift Solenoid "A" Electrical (P0700 P0753)
06-17-2017, 06:18 PM
#1
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Year: 1998
Model: Cherokee
Engine: 4.0L i6
Please help me Shift Solenoid "A" Electrical (P0700 P0753)
Tranny is shifting weirdly.
I read the codes and got (P0700 P0753)
Did some searching and not much written about this.
Is this typically something easy other than the solenoids?
Fuse, ground, etc.
I am totally clueless, so I need to be pointed to what needs inspecting.
Pretend you're speaking to a blind 8 year old.
If I do need to replace the "A" solenoid, can you help me find some info on how to do this?
Anyone got a video link?
Also, while I have it open, I prefer to change all solenoids that may fail.
Are there more than one?
What parts do I need to order?
Best place to buy parts?
https://www.cherokeeforum.com/f2/doe...-legit-195669/
http://www.bulkpart.com/Merchant2/me...e=A340solenoid
I read the codes and got (P0700 P0753)
Did some searching and not much written about this.
Is this typically something easy other than the solenoids?
Fuse, ground, etc.
I am totally clueless, so I need to be pointed to what needs inspecting.
Pretend you're speaking to a blind 8 year old.
If I do need to replace the "A" solenoid, can you help me find some info on how to do this?
Anyone got a video link?
Also, while I have it open, I prefer to change all solenoids that may fail.
Are there more than one?
What parts do I need to order?
Best place to buy parts?
https://www.cherokeeforum.com/f2/doe...-legit-195669/
http://www.bulkpart.com/Merchant2/me...e=A340solenoid
Last edited by BimmerJeeper; 06-17-2017 at 08:41 PM.
06-17-2017, 06:39 PM
#2
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Year: 1998
Model: Cherokee
Engine: 4.0L i6
I found this old post:
Does anyone have a photo of where this connector is?
I have a MM, and set it to "resistance", but don't know where to place the 2 leads.
To check solenoids in transmission without removing pan - removed plug off TCU that is located Rt side dash under clove box -with key in off pos.- volt/ohm meter check pos. lead terminal C14 converter clutch solenoid should read 11-15 ohms, terminal C15 shift solenoid #2 should read 11-15 ohms, terminal C16 #1 shift solenoid should read 11-15 ohms make sure you have good ground on - lead. If solenoid cks good problem is else were loose wires or tps
I have a MM, and set it to "resistance", but don't know where to place the 2 leads.
06-17-2017, 06:57 PM
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Year: 1998
Model: Cherokee
Engine: 4.0L i6
Here is another. Anyone have any idea what this means?
Why don't Jeep people ever take photos?
Why don't Jeep people ever take photos?
There are a pair of connectors near the trans dipstick. The black 8 pin goes to the NSS. Just for giggles, unplug it and verify that you have continuity where you should in P-R-N-D-3-1/2. Unplug the grey 7 pin and check the female side. The center pin of the row of 3 is the ground to the trans. Check for resistance/continuity to the ground post of your battery. You'll want to see less than 1 ohm, and the reading should be closer to what you see when you touch your VOM leads together, say maybe .3 ohm. If that proves out, your ground is good, and you'll need to check the solenoids. The other row has 4 pins. The pin offset and the 2 closest to it in the same row are the solenoids. When checked to ground they should show 12-18 ohms. I suspect your #1 solenoid is failing or has failed. Mine has and shows 18K ohms!
06-17-2017, 07:06 PM
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Year: 1998
Model: Cherokee
Engine: 4.0L i6
I would like to probe cavity 12
Where is this TCM thing?
I set the MM to "ohms" (200)
I stick red lead into cavity 12.
Where do I stick black lead?
Where is this TCM thing?
I set the MM to "ohms" (200)
I stick red lead into cavity 12.
Where do I stick black lead?
It could be a sticking 1-2 solenoid, a defective 1-2 solenoid, or a lack of control signal to the 1-2 solenoid from the TCM. Other than this, the valve body may be defective.
When's the last time you changed your trans fluid? What trans fluid are you using...Dexron III/Mecon?
No CEL? Does the CEL bulb work?
Back to solenoid 1-2:
1–2 SHIFT VALVE
The 1–2 shift valve controls the 1–2 upshifts and downshifts. The valve is operated by the “A” valve body solenoid and line pressure from the manual valve, second coast modulator valve and the 2–3 shift valve.
When the transmission control module deactivates the solenoid, line pressure at the top of the valve moves the valve down closing the second brake accumulator feed port. As the solenoid is activated and the drain port opens, spring force moves the valve up exposing the second brake feed port for the shift to second gear.
If you have a digital Volt/Ohmmeter you chan check the resstance of the 1-2 (A) solenoid from the TCM connector. It involes accessing the TCM and removing the TCM connector.
Here's the TCM connector pin-out and functions chart. You are interested in Pn Cavity 12, but you should check the other two solenoids while you're at it.
Here's the TCM systems tests. The Preliminary Resistance Checks Steps need to be accomplished and the Specific Resistance Checks, steps 5., 6., and 7. should be accomplished.
When's the last time you changed your trans fluid? What trans fluid are you using...Dexron III/Mecon?
No CEL? Does the CEL bulb work?
Back to solenoid 1-2:
1–2 SHIFT VALVE
The 1–2 shift valve controls the 1–2 upshifts and downshifts. The valve is operated by the “A” valve body solenoid and line pressure from the manual valve, second coast modulator valve and the 2–3 shift valve.
When the transmission control module deactivates the solenoid, line pressure at the top of the valve moves the valve down closing the second brake accumulator feed port. As the solenoid is activated and the drain port opens, spring force moves the valve up exposing the second brake feed port for the shift to second gear.
If you have a digital Volt/Ohmmeter you chan check the resstance of the 1-2 (A) solenoid from the TCM connector. It involes accessing the TCM and removing the TCM connector.
Here's the TCM connector pin-out and functions chart. You are interested in Pn Cavity 12, but you should check the other two solenoids while you're at it.
Here's the TCM systems tests. The Preliminary Resistance Checks Steps need to be accomplished and the Specific Resistance Checks, steps 5., 6., and 7. should be accomplished.
Last edited by BimmerJeeper; 06-17-2017 at 07:09 PM.
06-17-2017, 07:09 PM
#5
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Okay, slow down killer, LOL
Have you tried doing a succession of drain and fills yet?
Drain the fluid from the pan. Refill to proper level. Drive it for 10-15 minutes. Repeat. Do this several times.
May be some junk in there that will knock itself loose after doing so. Plus, it's easy to do, and doesn't cost much.
Do this first. DO NOT have it power flushed. Simple drain-and-fills are sufficient.
Do this first and report back. Also, use the proper fluid...don't use ATF+4, DEX MERC3 only. And recycle the used fluids.
Have you tried doing a succession of drain and fills yet?
Drain the fluid from the pan. Refill to proper level. Drive it for 10-15 minutes. Repeat. Do this several times.
May be some junk in there that will knock itself loose after doing so. Plus, it's easy to do, and doesn't cost much.
Do this first. DO NOT have it power flushed. Simple drain-and-fills are sufficient.
Do this first and report back. Also, use the proper fluid...don't use ATF+4, DEX MERC3 only. And recycle the used fluids.
Last edited by Rogue4x4; 06-17-2017 at 07:12 PM.
06-17-2017, 07:12 PM
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Year: 2001
Model: Cherokee
Engine: 4.0 Litre I6
Tranny is shifting weirdly.
I read the codes and got (P0700 P0753)
Did some searching and not much written about this.
Is this typically something easy other than the solenoids?
Fuse, ground, etc.
I am totally clueless, so I need to be pointed to what needs inspecting.
Pretend you're speaking to a blind 8 year old.
If I do need to replace the "A" solenoid, can you help me find some info on how to do this?
Anyone got a video link?
Also, while I have it open, I prefer to change all solenoids that may fail.
Are there more than one?
What parts do I need to order?
Best place to buy parts?
I read the codes and got (P0700 P0753)
Did some searching and not much written about this.
Is this typically something easy other than the solenoids?
Fuse, ground, etc.
I am totally clueless, so I need to be pointed to what needs inspecting.
Pretend you're speaking to a blind 8 year old.
If I do need to replace the "A" solenoid, can you help me find some info on how to do this?
Anyone got a video link?
Also, while I have it open, I prefer to change all solenoids that may fail.
Are there more than one?
What parts do I need to order?
Best place to buy parts?
06-17-2017, 07:14 PM
#7
Caracticus Potts The Mod
this code is normally associated with the governor control pressure, which controls 2-3 shift and 3-4 shift pressures....nine time out of ten it is an open in the coil part of the govern control pressure solenoid.....the repair involves replacing the solenoid as a set with the internal wiring loom as well. The best test procedure requires using a transmission pressure gauge to test actual shift point pressures with a scan tool, at best all you can do is verify voltage and ground to the solenoid and shotgun a part into the trans. Might be outside your wheel house.
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06-17-2017, 07:20 PM
#8
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06-17-2017, 08:29 PM
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Year: 1998
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this code is normally associated with the governor control pressure, which controls 2-3 shift and 3-4 shift pressures....nine time out of ten it is an open in the coil part of the govern control pressure solenoid.....the repair involves replacing the solenoid as a set with the internal wiring loom as well. The best test procedure requires using a transmission pressure gauge to test actual shift point pressures with a scan tool, at best all you can do is verify voltage and ground to the solenoid and shotgun a part into the trans. Might be outside your wheel house.
I'm guessing the governor control pressure solenoid different from the 1-2 shift and 3 shift solenoids.
Is that the 3rd solenoid that is typically replaced, if you do all?
Is it the "sensor" that is on the upper right corner?
06-17-2017, 11:05 PM
#11
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Year: 1997
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Take care of the fluid first and see if it improves. To answer your question about the solenoids...
There are 3 solenoids for the AW4.
When probing cavites 11, 12 or 13 of the TCM connector to test the solenoids, your negative lead goes to cavity 24 of the TCM connector. This is mentioned in step 5 of the 'Preliminary Resistance Check Steps'. It took me a second to figure that out my first time thru, but thats what you do.
Cavity 11 and 24
Cavity 12 and 24
Cavity 13 and 24
06-18-2017, 03:30 AM
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06-18-2017, 07:36 AM
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Year: 1998
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I've got cars that are over 150k on the original fluid, so I'm pretty certain it's not the fluid.
I will check the level, but am not going to do another drain/fill cycle already.
I will check the level, but am not going to do another drain/fill cycle already.
06-18-2017, 01:01 PM
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The 30k mile interval for transmission fluid is from the owners manual. Your call. The TCM is located to the right of your right knee, under the dash. Two screws. Moving the seat all the way back will help as its a bit cramped under there, and there isnt a lot of slack in the harness. Atleast there wasnt for my 97.
Attachment 303316
Attachment 303316
Last edited by fb97xj1; 08-10-2018 at 08:00 PM.