Hi guys, I'm new to this place, been reading for a while but never posted

anyways, My dumbass friend had my evo for a month or so, long story short, the battery died after a month's time, he bought a new one, and reverses the battery terminals and short circuited somewhere,

Now the ecu doesn't get power, so no spark, no fuel, no life !

The main + terminal's fuse burnt, I replaced it, then checked every single fuse in the engine bay and driver's side fuse box, all are fine !

the car has a power fc, I put the stock ecu back, same shiit .. what next ? help plz

thanx

 

this isnt good

 

I know, I seriously don't know how stupid someone can get, but i have no choice now..

any ideas ? where something somewhere short'd ?

 

is there electricity getting to the rest of the car? there must be a fuse that took a dump somewhere. Check the under the hood fuses and near the door fuses. I dont think there was a short circuit as much as reversing polarity off power on electrical equipment.

If you have the mitsu working manual of the car, it may help you in diagnosing the problems...check in the eletrical section. do a search for it.

 

I searched, no luck

all electronics work fine in the car, it just doesnt' have spark or fuel cause the ecu ain't getting power

 

hmm gotta be a fuse thats had it..
you would think maybe your ecu is stuffed but no because you tried standard ecu..
keep looking for fuses..

 

I had pro electrician check every single fuse, every single relay, ever single signal wire, I even gave the power fc direct power 12v, nothing !

We ran outta ideas !

 

Bet its a fuse. Keep looking.

 

No, I have done the fuse box in the engine bay and steering side box..went over and over and over em one by one ..none !

Not a fuse !

 

The car runs on a power fc, does the immobilizer still work with it ? could it be it ?

 

its the imobilizer thats what is does keeps the car from getting spark and fuel had problems with my girlfriends evo 7 and her imobilizer on the car

 

first and formost dont let an idiot that cant even put a battery in take your car for a FEW months! not even a day lol..


good luck

 

^^ True ..my bad

I gotta solve this..how do I disable the immobilizer ? where is it located ?

 

Its not a fuse because the cars' electrical circuits are load to ground. You shot voltage the opposite way (electron theory LOL!). The ring antenna is on the steering column, and on US model evos (LHD) the immobilizer ecu is located to the right of the steering wheel behind the center console of the dash ( Near DLC), but I'm not going to tell you how to surpass it.
If power is present at pin 7( L/Y evo 8) and pin 9 (L/W) the ecu may be toast. If no power present futhur diag required. Good luck
Does the engine crank when the key is turned?

 

Did you check the fusible link?
Also the Immobilizer ecu could cause power issues the the pcm, but also check the MFI relay. Good luck