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Ecu connections #1652886
12/09/2021 12:47
12/09/2021 12:47
Joined: Sep 2010
Posts: 334
The Netherlands
J
jaaps2 Offline OP
Club Member 1560
jaaps2  Offline OP
Club Member 1560
Making a profit
J

Joined: Sep 2010
Posts: 334
The Netherlands
After reading the post by Barnacle:
What is
Purge cannister command
?

Some James Bond option?


20VT, build in 1997, first used in 1998
https://youtu.be/mI0jZIIBc2w
20VT6 plus, build in 1999
Re: Ecu connections [Re: jaaps2] #1652888
12/09/2021 15:34
12/09/2021 15:34
Joined: Feb 2019
Posts: 193
Free State of Jones
clanger Offline
On a journey
clanger  Offline
On a journey

Joined: Feb 2019
Posts: 193
Free State of Jones
Opens and closes the purge valve which allows the fuel vapours in the charcoal canister to be burnt in the engine. Its a valve that is very close to my heart having spent the last month chasing down small air leaks - if it start to leak is screws up your fuel trims.

First the one way valve that scavenges crank case vapour using plenum pressure went faulty, great I found the fault and STFT came back to spec. A week later STFT went screwy again and it turned out to be the Purge valve leaking. I guess after 20+ years they wear out.

Last edited by clanger; 12/09/2021 15:35.

E85
Re: Ecu connections [Re: jaaps2] #1652889
12/09/2021 17:58
12/09/2021 17:58
Joined: Dec 2005
Posts: 32,841
Berlin
barnacle Offline
Club Member 18 - ex-Minister without Portfolio
barnacle  Offline
Club Member 18 - ex-Minister without Portfolio
Forum Demigod

Joined: Dec 2005
Posts: 32,841
Berlin
I guess I don't need to answer smile


[Linked Image]
Don't get no respect! Coupe Fiat 1994-2000 - an owner's guide <-- clicky!
Re: Ecu connections [Re: jaaps2] #1652890
12/09/2021 19:42
12/09/2021 19:42
Joined: Feb 2019
Posts: 193
Free State of Jones
clanger Offline
On a journey
clanger  Offline
On a journey

Joined: Feb 2019
Posts: 193
Free State of Jones
The OP did not make it clear it was a question to you. If I had known that was the case I would of stayed stum and left it for you smile


E85
Re: Ecu connections [Re: jaaps2] #1652891
12/09/2021 20:17
12/09/2021 20:17
Joined: Sep 2010
Posts: 334
The Netherlands
J
jaaps2 Offline OP
Club Member 1560
jaaps2  Offline OP
Club Member 1560
Making a profit
J

Joined: Sep 2010
Posts: 334
The Netherlands
OP here: thanks both


20VT, build in 1997, first used in 1998
https://youtu.be/mI0jZIIBc2w
20VT6 plus, build in 1999
Re: Ecu connections [Re: jaaps2] #1652892
12/09/2021 20:37
12/09/2021 20:37
Joined: Dec 2005
Posts: 32,841
Berlin
barnacle Offline
Club Member 18 - ex-Minister without Portfolio
barnacle  Offline
Club Member 18 - ex-Minister without Portfolio
Forum Demigod

Joined: Dec 2005
Posts: 32,841
Berlin
All questions open to everyone, Clanger. I don't think Jaaps was aiming it at me!

For what it's worth, it's the first I've heard of the purge system leaking, though I'm sure there must have been other cases.

Neil


[Linked Image]
Don't get no respect! Coupe Fiat 1994-2000 - an owner's guide <-- clicky!
Re: Ecu connections [Re: jaaps2] #1652894
12/09/2021 20:43
12/09/2021 20:43
Joined: Feb 2019
Posts: 193
Free State of Jones
clanger Offline
On a journey
clanger  Offline
On a journey

Joined: Feb 2019
Posts: 193
Free State of Jones
First time for everything


E85
Re: Ecu connections [Re: jaaps2] #1652896
13/09/2021 04:41
13/09/2021 04:41
Joined: Jun 2007
Posts: 4,514
Malaysia..Glasgow at heart
Kelv27 Offline
Forum is my job
Kelv27  Offline
Forum is my job

Joined: Jun 2007
Posts: 4,514
Malaysia..Glasgow at heart
Clanger, did yours have a physical leak (i.e. Cracked housing / nozzle) or was it internal?



Re: Ecu connections [Re: jaaps2] #1652904
13/09/2021 16:03
13/09/2021 16:03
Joined: Dec 2005
Posts: 32,841
Berlin
barnacle Offline
Club Member 18 - ex-Minister without Portfolio
barnacle  Offline
Club Member 18 - ex-Minister without Portfolio
Forum Demigod

Joined: Dec 2005
Posts: 32,841
Berlin
Just for interest: for a 20vt ECU on the bench, connecting pins 2, 14, 19, and 24 to ground and pins 18 and 27 to +12v will allow sufficient operation to initialise comms with a widget or other tester via pin 55. It may also require pin 37 to +12v for full operation, but it's going to generate ever so many errors with nothing attached to any of the sensor inputs...


[Linked Image]
Don't get no respect! Coupe Fiat 1994-2000 - an owner's guide <-- clicky!
Re: Ecu connections [Re: jaaps2] #1653051
22/09/2021 10:21
22/09/2021 10:21
Joined: Dec 2005
Posts: 32,841
Berlin
barnacle Offline
Club Member 18 - ex-Minister without Portfolio
barnacle  Offline
Club Member 18 - ex-Minister without Portfolio
Forum Demigod

Joined: Dec 2005
Posts: 32,841
Berlin
An in-depth look at the ECU connections - again, for the Marea, but it's basically the same - on Youtube: https://www.youtube.com/watch?v=DLEAebb66Bg

It's in Portuguese, but the auto translate on the subtitles seems to be pretty good.


[Linked Image]
Don't get no respect! Coupe Fiat 1994-2000 - an owner's guide <-- clicky!

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