Technical ECU ko?

[kouba420]

Hello,

I need help with my Stilo 1.6.

When I tried the a/c relay in the engine, I forgot to remove a piece of wire from the fuse box. :bang:

Well, I started the engine, closed the hood, and it probably hit something in the engine space.

Now I can't start the engine.

When I turn on a ignition, I can hear that fuel pump is making noise,engine cranking but wont hit, diag. shows only injector faults P0201-0204, injectors are checked by multimeter, they are ok.

I've checked all fuses and relays. ok

Do you think is fried ECU?

Can somebody help?

Thanks

 

[g8rpi]

Hi,
Hve you checked ALL the fuses in the car? I don't know the stilo but most Fiats have at last two sets of fuses. What diagnostics are you using? If it is not Fiat specific it will not give information on things like the immobiliser. If you clear the faults do they come straigh back?
With the igntion in the ON position do you get 12V at one pin of the connector that goes to the injector?

Robert G8RPI.

 

[kouba420]

Hi,
Hve you checked ALL the fuses in the car? I don't know the stilo but most Fiats have at last two sets of fuses. What diagnostics are you using? If it is not Fiat specific it will not give information on things like the immobiliser. If you clear the faults do they come straigh back?
With the igntion in the ON position do you get 12V at one pin of the connector that goes to the injector?

Robert G8RPI.

Hi,

thank you for the response.

yes, I've checked fuses in engine space and under the steering wheel.

I'm using MES. When I clear faults, they're gone until I try start the car again.

I tested the 12v pin... it shows 11,53 V

 

[kouba420]

Can anyone confirm the possibility of destroying ECU by short circuit?

Thanks

 

[g8rpi]

Can anyone confirm the possibility of destroying ECU by short circuit?

Thanks

Hi,
While the ECU should not be affected by a short circuit on the supply, especially to a different circuit like the A/C a short can cause all sorts of transients and induced voltages. So while you would be unlucky if it has damaged the ECU, it's possible that it has. You have two options, continue to look for problems else where on the car or eliminate the ECU by changing it or sending it to a specialist for testing and repair. As far as ruling out other falts, assuming you have had a good look for obvious damage, I'd get Fiat specific diagnostics such as Multiecuscan on the car.

HTH,
Robert G8RPI.

 

[kouba420]

I'll try change the ECU.

Thank you

 

[jackwhoo]

Check that the key or code light on instruments goes out before you attempt to start car.

 

[kouba420]

Check that the key or code light on instruments goes out before you attempt to start car.

yes it goes out

 

[kouba420]

It was really dead ecu.

I've changed the ecu and now my stilo (I hope) is ok.


Thanks for help

 

[Artermis]

Be sure to relocate the ECU on a 1.6 away from the top of the engine.

 

[Mytheroo]

Be sure to relocate the ECU on a 1.6 away from the top of the engine.

Just wondering, I dont use the plastic engine cover....you think I still need to relocate the ECU?

 

[kouba420]

Be sure to relocate the ECU on a 1.6 away from the top of the engine.

I have ECU on battery cover

Just wondering, I dont use the plastic engine cover....you think I still need to relocate the ECU?

You should do it

 

[Artermis]

Just wondering, I dont use the plastic engine cover....you think I still need to relocate the ECU?

I wouldn't like to say for definite mate but it's pretty easy to relocate it, so why risk it?

 

[Mytheroo]

true,
did you run that ground wire to the new location?