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 Post subject: Hard shift with P0700, P0714 and solution
PostPosted: Sun Jun 22, 2014 9:03 pm 
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Joined: Tue Nov 30, 2010 10:48 am
Posts: 37
My crd has always inconsistently shifted hard especially when starting out.
I never had a code or an engine light indicating a failure. I thought hard
shifting between 1st and 2nd / 2nd 3rd was normal for this vehicle because
it always has done this every now and then since I purchased it. I drove it
this way for years not knowing anything was wrong.

Finally an engine light illuminated while it was hard shifting so I read
the codes to determine the problem. It showed the following two codes:
P0700 = TCM DTC (Transmission Control System malfunction)
P0714 = Transmission Fluid Temperature Sensor circuit intermittent

In reading what I could find on the internet about this I discovered the
temperature sensor is in the Transmission Solenoid Assembly in the transmission.
Some web sites said dealers suggested replacing the transmission to solve this
problem. Well replacing the transmission is an expensive way to solve this
problem and probably would not fix it any way.

So I began an analysis on what could cause this problem. There are three
major components involved, the Transmission Control Module (TCM), the
Transmission Solenoid Assembly and the wiring harness between them.

A thermistor in the transmission changes resistance when the temperature
changes allowing the Transmission Control Module to compute the actual
temperature of the transmission fluid. When the temperature rises the
resistance goes down.

To verify the proper operation of the thermistor I removed the connector
from the TCM and checked the resistance of the thermistor at two different
temperatures. The layout of the connector can be found in the FSM 8W-80-116.
The wiring diagram is on page 8W-31-15 and the transmission connector is on
page 8W-80-117. In the early morning I checked the resistance on the TCM
connector going to the transmission between pin 54 (transmission temperature
sensor signal) and pin 13 (speed sensor ground) and found 10,000 OHMs at
approximately 75 degrees. I waited a few hours later and checked again and
found 9,500 OHMs at approximately 80 degrees. This appeared to be the correct
behavior for a thermistor.

So the wiring harness and transmission appeared to be operating correctly.
This implies the TCM or its connector is the problem. To remove the TCM and
its connector I first removed the air filter box and the turbo vacuum valve
assembly.

I cleaned the TCM and removed its cover. The entire electronics portion is
enclosed in a conformal coating (clear epoxy) making it difficult to replace
any devices on its circuit board. So I closed it up and focused on cleaning
the connector. After removing all of the dirt and grime from the connector
I sprayed it with contact cleaner from r a d i o shack.

I reinstalled the TCM and cleared the DTC codes with my scan tool.

I test drove the Jeep and for the first time it shifted very smooth. The next
day it shifted so smoothly that you almost could not tell it was shifting.
It appears that the problem was just a bad connection in the TCM connector.
Apparently the rough shifting was caused by false transmission temperature
readings due to the variable resistance of the faulty connection. A rubber
gasket around the connector would keep it clean if they would have designed
it that way.

I think I will wrap my connector with electrical tape to help keep it clean
and dry.

I bet this problem is not uncommon and like me they just put up with the rough
shifting.

The cost of the fix was the $5.00 I paid for the contact cleaner.


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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Wed Jun 25, 2014 10:25 pm 
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Joined: Sat Oct 12, 2013 12:09 am
Posts: 98
Did you have a consistent rough shift between 2 and 3, especially at light throttle?

Please keep us posted on how this fix works. Good analysis by the way.


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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Sun Jun 29, 2014 9:33 pm 
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Joined: Tue Nov 30, 2010 10:48 am
Posts: 37
Yes, there was a rough shift between 2 and 3 especially when the motor was cold.
It tended to get smoother as it shifted a few times but it was never as smooth as it is now.
Every shift 1-2 2-3 ... was noticeable but 2-3 was more pronounced at low rpm.

It's been over two weeks now and shifting is very smooth with no codes. :pepper:


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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Mon Jun 30, 2014 12:37 am 
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Joined: Mon Feb 04, 2013 12:27 pm
Posts: 637
uham wrote:
Yes, there was a rough shift between 2 and 3 especially when the motor was cold.
It tended to get smoother as it shifted a few times but it was never as smooth as it is now.
Every shift 1-2 2-3 ... was noticeable but 2-3 was more pronounced at low rpm.

It's been over two weeks now and shifting is very smooth with no codes. :pepper:
you got off easy I replace sensors before the Trans rebuild and didn't help at all


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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Sun Aug 03, 2014 2:04 pm 
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Joined: Sat Oct 12, 2013 12:09 am
Posts: 98
This worked for me. I have had a month of trouble free shifting.


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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Tue Aug 05, 2014 5:02 pm 
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Joined: Thu Apr 04, 2013 12:24 am
Posts: 9
I'm going to try this tonight and will report back. Anything I should know before trying to remove the TCM?

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K&N air filter
2nd gen Fuel head
Facet 40109 Lift Pump
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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Tue Aug 05, 2014 7:41 pm 
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Posts: 551
Location: Chico, CA
You don't need to remove the TCM. Just the connector. If you go to the forum on GDE, Keith has instructions on how to pull it. I just removed the vacuum assembly that is in the way. Removed TCM connector. Sprayed liberal amounts of contact cleaner on both wire connector and TCM connector. Let it dry for about an hour and then put it all back together. Also, unhook battery to be safe.

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2006 Jeep Liberty CRD Limited
Gen2 Fuel Head - Magnaflow Exhaust - Ram transmission swap - In-Tank Lift Pump
Moab Wheels - 245/75/R16 LR E Cooper Discoverer AT3 Tires - OME Lift 790/90009 948/60069 - Etecno Glow Plugs - V6 Airbox
RUNNING B100
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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Wed Aug 06, 2014 10:40 am 
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Joined: Thu Apr 04, 2013 12:24 am
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http://www.greendieselengineering.com/j ... st/91.page

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GDE Eco Tune
K&N air filter
2nd gen Fuel head
Facet 40109 Lift Pump
General Grabber HTS


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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Wed Aug 06, 2014 4:28 pm 
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Joined: Thu Apr 04, 2013 12:24 am
Posts: 9
So I cleaned the wiring harness. It was pretty easy. I have mixed results. I cleared the codes and started my test drive to find out that the harsh 2-3 shift was gone. I drove for another ten minutes and then my check engine light came on with codes P0700 and P2706 (Shift Solenoid F). Now when I try to clear the codes it doesn't reset the check engine light. Clearing the codes removed P2706 but P0700 still exists. Any ideas why that would happen? I'll keep driving to see if the harsh shift comes back, so far it hasn't.

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2005 Jeep Liberty CRD Limited
GDE Eco Tune
K&N air filter
2nd gen Fuel head
Facet 40109 Lift Pump
General Grabber HTS


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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Wed Aug 06, 2014 7:19 pm 
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Location: Chico, CA
You need a DRBIII or equivalent scanner to read tranny codes. P0700 means there are codes stored in the TCM, but you can only read them with an expensive scanner.

Did you let the connector dry out before reassembly? A wet connector can cause all sorts of issues.

_________________
2006 Jeep Liberty CRD Limited
Gen2 Fuel Head - Magnaflow Exhaust - Ram transmission swap - In-Tank Lift Pump
Moab Wheels - 245/75/R16 LR E Cooper Discoverer AT3 Tires - OME Lift 790/90009 948/60069 - Etecno Glow Plugs - V6 Airbox
RUNNING B100
Pic of my Jeep!


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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Fri Aug 08, 2014 10:38 am 
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Joined: Thu Apr 04, 2013 12:24 am
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I re-did this strategy and made sure the harness was dry. It worked great until I let the vehicle sat over night. The next day it went right back to the same old harsh 2-3 shifting. It started with no check engine light, the first shift from 2-3 was harsh, and then the check engine light came on with codes P0700, P0714.

What is on the other end of the wiring harness, on the transmission side? Can I clean that end? Where do I go from here?

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2005 Jeep Liberty CRD Limited
GDE Eco Tune
K&N air filter
2nd gen Fuel head
Facet 40109 Lift Pump
General Grabber HTS


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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Fri Aug 08, 2014 2:03 pm 
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Location: Biella Italia
I have tested the pin 54 , but my multimeter can read something at 20k and read about 18,7 cold or hot , when at the dealer , with a DRBIII the temperature read is at -3 , after a quick learn go at 171 now with the tester in pin 54 if I moove the cable the value go at full range "open circuit" after said that I had no code and no limp mode
any suggestion ?

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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Tue Aug 12, 2014 1:16 pm 
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re test the value , but make sure you measure the right pin , take a look of a orientation of the wiring harness

Image

now after that I can ONLY read 13,70 at 2000 Ohm scale in the cold morning , about 55 F external temp , and 17,70 at 2000 Ohm scale after a ride with FT on mountain road . now I know I have no shortcut in the wiring , I have changed the valve body solenoid in April for the P0714 .........now the question is


why some time with a special scan tool I read a -3 F in the tranny when is hot ? and after a quick learn rise to 171 ?
is my TCM TOASTED ?

any suggestion is much appreciated

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ECU Tuner -EGR OFF -DPF OFF Swirl/Flap OFF, Lambda OFF , DTC OFF in many cars , not ONLY

https://www.facebook.com/YetiChiptuning


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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Tue Dec 09, 2014 2:55 pm 
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Joined: Sun Nov 24, 2013 10:43 am
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Location: Helena MT but can be found in Esmerelda NV.
BUMP I am having the same codes and problems. I also feel a vibration around +45mph and I am wondering if my TC is going out and thats why I am getting the trans temp code.

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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Tue Dec 09, 2014 5:28 pm 
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Location: Texas
TCM should have large red\orange tite-fitting silicone rubber gasket in the connector surrounding the pins - excludes foreign stuff

Harness connector has same surrounding each individual female terminal with tite fit in the connector body - it is called a weather-pak connector, as nothing can get in there unless during an under-hood fire which melts the plastic connector(s)

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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Tue Dec 09, 2014 5:38 pm 
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Location: Texas
Yeti wrote:
re test the value , but make sure you measure the right pin , take a look of a orientation of the wiring harness

Image

now after that I can ONLY read 13,70 at 2000 Ohm scale in the cold morning , about 55 F external temp , and 17,70 at 2000 Ohm scale after a ride with FT on mountain road . now I know I have no shortcut in the wiring , I have changed the valve body solenoid in April for the P0714 .........now the question is


why some time with a special scan tool I read a -3 F in the tranny when is hot ? and after a quick learn rise to 171 ?
is my TCM TOASTED ?
Only the DRBIII for the '05's and STARSCAN for the '06's will reliably read all the modules - however, TCM alters shift points\pressures until trans fluid temp is within normal operating range
If the -3* was correct, the trans would shift harder than with the 171* value, and difference would be immediately noticeable before\after relearn

any suggestion is much appreciated


Note: only reason STARSCAN won't read the '05's is because DCJ stupidly left out the '05 VIN code letter required in the list to select the '05 for scanning

_________________
'05 CRD Limited
Pricol EGT, Boost
GDE Hot '11; EDGE Trail switched
SEGR; Provent; Magnaflow;
Suncoast T\C, Transgo Tow'n'Go switch;
Cummins LP module, Fleetguard filter, Filterminder
2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers
Rubicons, 2.55 Goodyears
Four in a row really makes it go


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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Thu Jan 22, 2015 12:15 am 
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Joined: Wed Jan 21, 2015 11:31 pm
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We're is the Tom connector new with jeeps 2004 liberty renagade having the sme problems with tranny


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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Thu Jan 22, 2015 11:46 am 
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Location: Texas
Yosko wrote:
We're is the Tom connector new with jeeps 2004 liberty renagade having the sme problems with tranny

If your Liberty has a TCM, it will be on the passenger-side fender panel, behind the air filter box near the firewall bulkhead - you'll need to remove the TCM to access the connector

If no TCM there, you will have NGC PCM on driver-side on the fender panel behind the battery, adjacent ABS module - NGC PCM has three connectors, with internal transmission control - you will need the '04 FSM to determine the correct connector and pin-out

KJ FSM's available for download here:


http://colorado4wheel.com/manuals/Jeep/KJ/

_________________
'05 CRD Limited
Pricol EGT, Boost
GDE Hot '11; EDGE Trail switched
SEGR; Provent; Magnaflow;
Suncoast T\C, Transgo Tow'n'Go switch;
Cummins LP module, Fleetguard filter, Filterminder
2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers
Rubicons, 2.55 Goodyears
Four in a row really makes it go


Last edited by gmctd on Thu Jan 22, 2015 2:08 pm, edited 1 time in total.

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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Thu Jan 22, 2015 1:30 pm 
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Location: Tallahassee, Florida
Be exceptionally careful removing and reinstalling the TCM
1. during removal be advised that the plug is on there really tight, at least the 2 I've dealt with were, and may require some gentle prying to get loose.
2. on reinstall the same is true BUT WITH an extra complication. The bolt threads into a nut that's captured in a hidden plastic housing. As such the nut can break loose easily. As you tighten the bolt use some extra pressure to push the plug in tight (e.g. do not depend on the bolt to pull the connection into place) and when the connections seats do not over tighten the bolt.

Whether or not some sort of proper electric connection lube would help with #2 I have no clue.

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 Post subject: Re: Hard shift with P0700, P0714 and solution
PostPosted: Sun Mar 26, 2017 11:19 pm 
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Just noting that here's another terribly hard 2-3 shift that was fixed by swapping TCM. Now I'll put the GDE tuned TCM back in and try a quick learn, I sure miss GDE'S shift points, but don't miss the whiplash, it was ridiculous!

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