OH NO! Never use 12v for testing control sensors. Most everything runs on a 5v reference signal.
You can use a multimeter for measuring the voltage and / or use a 12v bulb in series as a test light if you want to safely put some load on a circuit.
I have several 12v bulbs of different wattages with attached leads that I use for testing circuits under load (labeled) like 1 watt, 5 watt, 25 watt, etc.

Thanks for keeping up with my VERY SLOW progress on my Liberty. No one has posted any replied to my nearly defunct thread so I was wondering if anyone was reading it. Certainly it is my own progress report so there really isn't much anyone else can respond about.

It's good to find out about using a 12v in-series light bulb to inject a 'logic high' into a circuit. Oh well, 20/20 hind sight.

Dean.

You can purchase on ebay, item 294842846728, a voltage stepdown controller for about $2 that you input 12v & it has adjustable output, I have had one for years in a LPG camping shower to replace a couple of D cells. Its great as a 5v reference. You can probably find a cheaper one for USA delivery.
Your progress is fine Dean!

Here is an ECU repair company to avoid: ModuleExperts.com
Had a bad feeling going in that ModuleExperts.com would be a bad experience. Turned out to be true.
Their website reads, "...Pay us up front with CC and send in your Engine Control Module for repair. Flat rate $250..."
I wasn't about to pay in advance, but, I sent in the module first and awaited their response. They said "...your ECM is beyond repair. We can sell you an re-manufactured unit for an additional $960.
I told them to return my ECM without making any repairs. They responded in all caps (yelling) "JUST TOLD YOU IT IS NOT REPAIRABLE, SO HOW EXACTLY ARE WE TO "NOT MAKE ANY REPAIRS?" DID YOU NOT READ ANYTHING THAT WAS JUST EXPLAINED TO YOU?"
So I responded again, "Please send my ECM back to me."
They responded "WHY".
I said, "I don't want ModuleExperts.com to have a free module. I'll have someone else repair it. I understand it will cost me $25 return shipping."
Nothing in response.

Meanwhile, I found another ECM company (EcmRebuilders.com) that offers the same ECM for $350:
https://ecmrebuilders.com/product-categ ... jeep-2005/

So I purchased an ECM supposedly programmed specifically for my VIN. See what happens in the next few days or week.

Dean.

Apparently this ECM repair business is filled with crooks.

The first company (ModuleExperts.com) has made another mistake, and probably a deliberate one. They charge $250 + tax for a module test and repair. $72 testing fee, $153 repair fee, $25 return postage/freight fee -- sounds good enough. With mine, they said it was beyond repair so I asked them to return it. They refunded only the testing fee ($72) instead of the repair fee ($153). They still owe me $81.

I've called and they don't answer. I've emailed and they don't reply. This is the crappy part of being isolated in Hawaii; I can't go there and pound on the counter!

Dean.

The top thread is a bit comfusing. Can we or not flash 2008 wk 3.0 crd or not? The begining of the thread says no but it says if it's in the list you should be able to.
What is the true awnser?

only one answer , if you load a wrong file in a bosch edc16cp31 you can use it like a door stop

this hardware is different from KJ ecu , the tool can read the entry programming in KJ that is only 1 MB and if somethig goese wrong you can try to rewrite it with the stock one and if you are lucky the process go stright , in 16cp31 mounted on WK you have 2 MB of file and the tool can read only the last part of the ecu program with only the engine parameter and not the full programming , than if you load a wrong tune say goodbye at this ecu via obd , the only one chance is to open it , unglue it and try to rebuild the entry stock file and rewrite it in bench mode with special tool

I have a 516 is there a tune for my ECM to egr delete?

If you do not see your vehicles software version listed on the first page of this thread, you should contact (email or PM) Marco Giacomelli (a.k.a. Yeti) on this forum or on FaceBook for a custom tune that he can provide for you. You must contact him for details & pricing.
FaceBook contact info:> https://www.facebook.com/profile.php?id=100011557657029

How can I get my hands on Windows 7/Vista/or XP license? I'm running Windows 10 on one laptop and Windows 11 on another, and both give me the MPPS Tuner error on start-up (The instruction at 0x00000000...002D referenced memory at 0x00..02D. The memory could not be read.). Alternatively, is there a workaround to this that I've missed somewhere?