the megane is not part

[Giuseppe2016]

guys I have a megane 2003 1.5 dci engine k9k no part of trying to start he makes no sign, and I do not even enter the diagnosis on the engine control unit so I guess it is a problem of power supply of the control unit the fuses on the battery are good, and remains the fan on from what can depend on?

[lui93]

was done some programming on the ecu?

[tac89]

The picture turn you on? Begins to control the power supply from the battery and come on.

[Giuseppe2016]

no no programming this morning, the car is not lit more, whereas before, everything was ok, the picture turns on normally but will not let me go into a diagnosis on the engine control unit as if it were turned off controllaro the fuses on the positive battery and are ok and the two fuses from 5A mototrino and the ecu and they are ok in the diagrams I port a relay in the engine control or ignition primary, which is located in the passenger compartment and is yellow in colour to me is the doubt that this is the cause, and do not feed the centalina and can?

[MustangGT]

hello joseph feel but the obd came the 12V??

[Giuseppe2016]

it also because if I do get a diagnosis that I know the abs brake system I enter in the control unit safely and then the diagnosis turns on so I guess dii is

[MustangGT]

well then the chances are according to me :

1. like you said it might be missing power to the ECU the engine.
2. ecu gone!
3. check if you get voltage to the ecu.

for the diagnosis you just need the K-line in case you could power it on tour and connect with an adapter, 3-pin to see if it connects, and a bit spartan, but an attempt.

you would you ask for, but from today to tomorrow?....and...how many times .

However, if the diagnosis turns on the 12v are there.

[MustangGT]

the power points are 2 G2 and H2, now I can't remember if they need to be fed 2 or not.

re-reading you said that the fan stays on, so a bit of life in the ecu ce....maybe you just messed up, the megane are strange.....

[Giuseppe2016]

hello MustangGT power on the obd there and because it makes me do the diagnosis on all the other systems except the ecu, unfortunately I do not have the ability to power the ecu on the bench. and the fan stays on always even with the ignition switched off without the key, do not turn off as long as the disconnect the fan cable or the battery and the the true of the megane are a bit strange but this is the first time such a thing if there is no power to the ecu, what should I check? let me explain better from where it passes the power that gets to the ecu(fuses, relays), because I controllaro the 5A fuse and it's ok the same for the relay control engine, the data I have taken from autodaxxxx

[MustangGT]

and the fact that I can not postarti the pattern of the pins of the ecu, because you can't see it here due to the fact that you are registered as a beginner.

With a search on the internet and you should easily find it.

as I have explained to you that the ecu 2 power points....but I don't remember if they are fed all and 2 from the same fuse.

the fact that if the fan means, in part, powered, by defect seems to sprogrammata......but I can not give certainties and complicated from here.

You should controller on the connector of the ecu if the points G2 and H2, if there are 12 volt.

If so, and all the rest and ok you have to try to riprogrammarla.

Not the first time that I am with the ecu e2p damaged or flash that lose programming.

The causes can be varied, I would not go too much otherwise you will create confusion.

I scodificata only one of those, and with the **** very narrow, precisely because they are special machines, electronics unstable and very delicate.