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Old 08-10-2014, 12:24 PM
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2005 Wragler sport, TCM gone bad? Location?

2005 Wrangler sport 6cyl and automatic. Ok im back posting about my tranny problems. I get the P0700 Transmission Control System Malfunction code. When I look it up seems right. Doesn't go into 4th sometimes and when I stop shut down the eng and restart it runs great until I stop at a light then wont shift again to 4th. Some days it runs great some not. I did find I have to get it from a dealer not a parts store. Problem now is I cant find it. Some pics show it behind the reservoir drivers side, some show it under the dash. I cant find it either place. A 6 by 6 metal box right? Help!!!
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Old 08-10-2014, 03:41 PM   #2
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Quote:
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A 6 by 6 metal box right?
Not on an '05 model. You should have a PCM, not a ECM/TCM arrangement.

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Old 08-10-2014, 03:54 PM
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ok so the tcm is integrated into the pcm? Expensive then.
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Old 08-10-2014, 04:22 PM   #4
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Yes, the TCM was integrated into the PCM in 2005. They are separate in my '04.

Did you properly (!) verify the ATF level is up where it should be?
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Old 08-10-2014, 04:26 PM
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yes I cked in Park not neutral. Thats correct?
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Old 08-10-2014, 04:29 PM   #6
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Park or Neutral in 2003 and newer, only 2002 and older require it be in Neutral.
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Old 08-10-2014, 04:34 PM
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hmmm neutral huh. Let me go try that and ill let ya know. If only it were that simple. Ive never seen one drop of fluid in the driveway or anywhere under.

Thank You
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Old 08-10-2014, 04:46 PM   #8
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I think you misread my last answer... to clarify it, your 2005 transmission's ATF level can be checked in Park or Neutral. You checked yours in Neutral so if the engine was running and everything was warmed up while you did it, you're golden.
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Old 08-10-2014, 06:07 PM   #9
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P0700 is a generic code - use a real code reader and get the details. You may just need a new solenoid pack and not have to replace the PCM.
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Old 08-11-2014, 11:04 AM
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ok I have a question. I can do some mechanical work as long as its not rebuilding a tranny or engine. In your opinion is a code reader a worth the money? Probably is since I now own a Jeep, (Just Empty Every Pocket) LOL.
Napa and auto zone don't read codes anymore. Said the main office has told them they weren't allowed any more.
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Old 08-11-2014, 11:57 AM   #11
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This just happened to me yesterday on my 04. Just before the start of a trail, I got a CEL. So, I drove around a bit and found my 42rle tranny locked in 2nd gear. Code p0700 on the odometer. Glad it happened when it did instead of the middle of the run. Very steep trails in Rimrock Wa where low gear is a necessity. We sent the group to have fun and limped my Jeep back to camp. Rats.

Anyway, now home and I need to fix it before the next trip. Hope it's an easy fix.

Is there anyway to tell if the TCM/PCM thingy is bad without buying them first?
Where are they on an 04 TJ X?

Thank you. Still learning about these computer controlled problems as I go.
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Old 08-11-2014, 12:17 PM   #12
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As mentioned before P0700 is a generic code. It means that the transmission control system detects a problem and it is telling the ECM to alert you by turning on the check engine light. You need a scan tool that will communicate specifically with the transmission control system (not generic OBDII) to get the specific fault. Only then can you start diagnosing if it is a bad trans, sensor, TCM, etc.
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Old 08-11-2014, 12:20 PM
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well im gonna go buy a code reader today. Just dont know what kind. they start at about 59 dollars and up.. how fancy (expensive) do I need to go?
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Old 08-11-2014, 12:30 PM   #14
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I highly recommend to get one that reads live scan data, not just codes. I don't have any recommendations for you because my shop supplies professional level scan tools so I've never needed to look into the lower end models. I do know there are some for smart phones and laptops that are inexpensive, if not free, all you have to do is buy the cable to connect them.

Unless you get one that communicates with the Jeep TCM you still may only be able to read generic OBDII codes and may not have access to the trans code that is setting P0700.
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Old 08-11-2014, 12:32 PM
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Thanks. Ill go ck prices today. It may be cheaper to just take into a shop and get an estimate.
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Old 08-15-2014, 05:30 PM   #16
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I borrowed a OBTII code reader. I got a code that did not appear on the odometer when I did the ignition trick. P0605. Unfortunately, still a generic code.

I need a DRBIII reader to identify the exact problem. I could probably buy 2 new transmissions for the price of one of those.

I guess the Jeep will be going to the dealer for the first time since it left the lot when new.
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Old 08-16-2014, 10:16 AM
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Im taking mine in Monday afternoon. Ill let ya know what they say and how much!!! JEEP (Just Empty Every Pocket)
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Old 08-16-2014, 11:52 PM   #18
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Quote:
Originally Posted by tstev70697 View Post
Im taking mine in Monday afternoon. Ill let ya know what they say and how much!!! JEEP (Just Empty Every Pocket)
I was really having a problem with having to haul my Jeep to the dealer next week, just to have them hook up their fancy DRBIII code reader. No telling what the outcome would of been, or how much it would cost. Maybe I'm paranoid.

So today, I borrowed the TCM out of my buddies 04 TJ auto. BAM! Everything back to normal. All gears, OD, no CEL, everything. I put mine back in and it's back to limp mode and CEL.

I know my 04 has the TCM and PCM as separate units, unlike your 05. But, if you know anyone that has the same year and tranny as yours, it might be worth a shot.

All I needed to know was what was causing my problem. The part takes less than 5 minutes to install.

Good luck with your Jeep. Let us know the outcome.
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Old 08-17-2014, 07:45 AM   #19
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Be very careful trying a PCM from a soon to be x-friends vehicle

If your TJ has sentry key and his does not you will activate the sleeping sentry key feature in his PCM and it will never again work in his TJ

If his has sentry key and yours does not it will stop running a minute or less after you start your jeep as it requires the signal from the chipped key to stay running
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Old 08-17-2014, 01:33 PM   #20
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^^That is very good info I didn't even think about.
Luckily for me the 04 has the TCM separate from the PCM.
Neither my friend's Jeep or mine has a sentry system. I checked after reading the above warning.

Since the OP's 05 TJ has the TCM and PCM as one unit, maybe he should just continue on to the dealer.
I hope my bad advice didn't cause any problems.
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Old 08-17-2014, 02:57 PM
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Im still taking mine in tommorrow. I just hope its not to exoensive.
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Old 08-22-2014, 03:46 PM   #22
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Originally Posted by tstev70697 View Post
Im still taking mine in tommorrow. I just hope its not to exoensive.
What did you find out? I hope it is something simple, and not to spendy.

My used TCM came today. $10 bucks, 2 wrenches, and 5 minutes to install.
Mine is fixed.
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Old 08-24-2014, 01:24 PM
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Clutch bearings for overdrive among other things $2200.00. Luckily I got the extended warranty when I bought it 3 months ago. $100 deductible. I can give you a more detailed report when I pick it up. I did find out if you have an extended warranty one of the first questions the adjuster ask is proof of routine maintenance. Repair guy said he has seen them refuse to pay if routine maint isn't up to date.
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Old 08-24-2014, 04:37 PM   #24
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What are you calling a clutch bearing for overdrive

Overdrive gear is in tranny and clutch is inside bell

The clutch has a throw out bearing and a pilot bearing or bushing but neither are directly related to overdrive
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Old 08-24-2014, 05:11 PM   #25
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Never mind a slush box so maybe there the OD gear has a clutch in the tranny

Sorry my bad

Reminds me why I don't want an OD auto in a long term keeper
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Old 08-24-2014, 05:19 PM   #26
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I would have traded my previous 32RH I installed, which I loved, for the 4-speed AW4 in a heartbeat. I'd trade my current 42RLE for the AW4 in less than a heartbeat.

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