Title says it all....

probably not, seeing they have different sized motors, gearbox software, etc etc....

Depends what TJ the ECU is out of I would of thought.

Your KE is a 3.5L 4 speed auto. If say the ECU came out of a TJ or KJ series 1 3.5L 4 speed auto, that would fit right? Same engine (apart from revised cams), gearbox etc.

I dunno, just a thought.:)

probably not, seeing they have different sized motors, gearbox software, etc etc....
KE's came out with the 3.5L. The question is why? I'm kinda curious to the answer here as well.

Having issues with my KE, mechanic says I should try new ECU, mine may be damaged, well I can rip one out of a TJ 3.5 Auto (S1 i think have to check) for free and give it a whirl, otherwise ill have to pay for a replacement and hope it works, if not ive just wasted a heap of cash.

What shoudl I pay for an ecu anyways?

try the wreckers? u may have to pay for it but u can also sell it later if it doesn't work fpr you.

If you get one from a wreckers you need...

ECU
BCM
Keys!!!

All three are coded together - the engine won't start if they are wrong.

Cheers
Heath Young

Bcm???

If you get one from a wreckers you need...

ECU
BCM
Keys!!!

All three are coded together - the engine won't start if they are wrong.

Cheers
Heath Young
I thought you could re-code them? Well the keys at least?

BCM is a body control module.

Keys have an immobiliser built in - basically an unpowered RFID (radio frquency ID - like HID Prox cards) transponder that talks to the BCM. If the code matches (as well as the key fits the barrel) not a problem.

If you try to use your key, you need the BCM recoded by mitsubishi (using MUTII) to accept that ID string. (You don't need to do this when you have another working key AFAIK).

The remote (for central locking etc) is actually a fixed code, the BCM learns up to 3 codes as valid. It doesn't reprogram the fob or anything fancy like that.

A BCM is a once-only match for an ECU. They work with that ECU ONLY. Never another. If you replace the ECU, you have to replace the BCM. If you replace a BCM without replacing the ECU - no problem. But Mitsubish have to get it to talk to the ECU (and learn its unique ID).

Makes it a very hard car to steal.

Cheers
Heath Young

Sorry heath, but why cant a different ECU work with your existing BCM, If you can get a new BCM for your current ECU (providing mits match nit). Cant mits just match your existing BCM to a new ECU? Or are they only once programmable and you're talking about BRAND NEW BCMs working with your existing ECU?

From the manual - the fitment of a new ECU requires a new BCM - they are one-time programmable...

Cheers
Heath Young

From the manual - the fitment of a new ECU requires a new BCM - they are one-time programmable...

Cheers
Heath Young
Ahhh one time programmable, makes sense now :).
cheers.

Having issues with my KE, mechanic says I should try new ECU, mine may be damaged, well I can rip one out of a TJ 3.5 Auto (S1 i think have to check) for free and give it a whirl, otherwise ill have to pay for a replacement and hope it works, if not ive just wasted a heap of cash.

What shoudl I pay for an ecu anyways?

I don't know, but I'd be concerned about damaging the good TJ one by putting it into a KE. If the electronics are in any way different it probably wouldn't be a good move. Then again, if you can physically compare the circuit boards and they seem identical, then perhaps you could try it.

What sort of issues are you actually having in the first place?

From the manual - the fitment of a new ECU requires a new BCM - they are one-time programmable...

Cheers
Heath Young

thats interesting Heath but when pimp96.69 had transmission problems I got him an ECU only with a matching part no. and mitsu swapped it over.

Will change gears fine, then if I hit a big bump it will get stuck in gears then if I hit another bump it will work fine.........had it looked at at a tranny place and passed all tests OK, they said theyve had the problem once before (with a TR Auto) and replacing ECU solved it....

Will change gears fine, then if I hit a big bump it will get stuck in gears then if I hit another bump it will work fine.........had it looked at at a tranny place and passed all tests OK, they said theyve had the problem once before (with a TR Auto) and replacing ECU solved it....


Sounds like a loose connection somewhere, the bump is causing something to make/break connection. Then again TR ECU's aren't the best, I had one burn out on me for no reason.

maybe an auto 'leccy job?

Yep sounds like dry joints in the ECU - get a decent electronic serviceperson to retouch all of the joints and see how that goes.

Cheers
Heath Young

This is something that I had actually sent to Gas_Hed in a PM when the thread first appeared but Steve has suggested I should post it up to give you an example of some issues that running an ECU in a car it was originally not intended for...


The best bet is to actually go and talk to Mitsubishi and find out what the ECU runs. You may run into issues with the TJ ECU if it run's the ancillaries that the KE doesn't come with. Things like the additional airbags, trip computer... I only think of this as when working on my previous car, I came into hurdles when trying to run the standard Commodore Ecotec engine and ECU in a transplanted car, a Sigma, that would obviously have none of the ancillaries the ECU ran. Holden had sorted the ECU to run everything, and when it couldn't find the things that weren't there, such as the airbags, power steering, central locking and immobiliser, it refused to function, and when it did, it didn't function properly.

When I had some issues with my ECU and Gearbox computer in me KE Verada, I went and got it "flashed" to reset the data and the problems went away.

Now I'm not a mechanic, and neither are most of the forum members. So your best bet is to talk to Mitsubishi, an Auto Electrician and your Mechanic. It'll be best for you to be able to ask these professionals for help.

Now there were ways of overcoming this issue including a unit called a BCS, or a Body Control Simulator, that would mimick all the functions that a Body Control Module would carry out. No offense, but this is all a little bit beyond overcoming a problem for what is essentially, a standard Verada.

Phil.