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#125303 - 12/12/06 10:42 AM Engine Code Scanner
Just Bob Offline
Cap'n of all things wet
Admiral

Registered: 03/08/06
Posts: 1949
Loc: Chalfont, PA
Will an OBD2 Engine Code Scanner work on my 2005 Mercruiser 5.0L Carb'd engine? If so, where do I plug it in?

I just bought this on eBay for my Durango and Mitsubishi Eclipse, and was wondering if I could use it with the boat engine:


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#125304 - 12/12/06 08:23 PM Re: Engine Code Scanner
cny boater Offline
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Registered: 03/16/03
Posts: 3260
Loc: Central New York
No, marine engines are not OBD II equipped. I'm not sure if a Merc 5.0L carb even has any diagnostic connector (perhaps for the ignition system only).
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Bob
2002 Cobalt 226 350 MPI B1


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#125305 - 12/12/06 09:21 PM Re: Engine Code Scanner
Cobalt24sx Offline
"Rough Draft"
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Registered: 07/19/06
Posts: 741
Loc: Virginia
 Quote:
Originally posted by Just Bob:
Will an OBD2 Engine Code Scanner work on my 2005 Mercruiser 5.0L Carb'd engine? If so, where do I plug it in?

I just bought this on eBay for my Durango and Mitsubishi Eclipse, and was wondering if I could use it with the boat engine:
Give this site a try. It looks like they have a diagnostics scanner for Merc's: http://www.marinepartsexpress.com/diag_tools.html
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"Rough Draft" 2006 Cobalt 24sx Volvo 5.7L GiDP F5's
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#125306 - 12/13/06 04:20 PM Re: Engine Code Scanner
Al Offline
Nautical Alchemist
Grand Poobah

Registered: 01/14/03
Posts: 15010
Loc: Vagabond Wanderer from Mich.
CNY, do you know anything about ALDL? My engine manual says it has a diagnostic port that will read ALDL, but I have not been able to find much info about it.
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2004 Mercury 270 Airdeck Dinghy.
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#125307 - 12/13/06 08:19 PM Re: Engine Code Scanner
trooplewis Offline
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Registered: 11/10/06
Posts: 4531
Loc: San Diego
cny, aren't the fuel injected ones equipped with a marine version of OBD-II? My 5.0 GXi Volvo has a connector that looks a lot like an OBD hookup, and I thought Merc Smartcraft stuff just connected to the OBD computer.

I have seen a marine technician work on modern outboards with a laptop hooked into the onboard ECU-whats the difference?
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#125308 - 12/14/06 05:58 AM Re: Engine Code Scanner
Capn Morgan Offline
Scallywag
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Registered: 06/21/04
Posts: 10884
Loc: West Michigan
This is a very long read, but it will answer many questions on this topic. Interesting that Volvo has new EFI control modules on all 2006 and newer engines, The new EGC (Electronic Gas Control) modules are much different than the ECM'spreviously used on earlier engines.

http://216.230.203.183/acro/connect.pdf
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#125309 - 12/14/06 06:43 PM Re: Engine Code Scanner
cny boater Offline
Admiral

Registered: 03/16/03
Posts: 3260
Loc: Central New York
Al, you have Crusaders, correct? I'm not sure if they use Motorola processors or GM's. At any rate, they are usually mounted on top of the engine, with a diagnostic connector not far away. I don't know much about Crusaders, whether they have a dedicated scan tool or software that runs on a laptop. I know Merc offers a code reader and 2 versions (at least) of dedicated scan tools. The code reader basically grounds one of the pins in the ALDL connector to flash a light -- code 12 is "system ok", any any other flashes indicate a trouble code.

The better version of Merc's scantool stinks - I have it for my 02 350 MAG. OTC makes it for them, and my dislike for OTC scantools for automotive use spills over to the marine world.

The better way to go is laptop-based software. PDQ Cobalt has an aftermarket version (Rinda) for his Merc Cobalt. I believe he he impressed!

Trooplewis, I don't think the marine industry has a name (like OBD I or II) like the automotive industry does. With only a few players, there is no need for gov't regulation on diagnostics on boats. Google OBD II, and if you find the gov't site, you'll read a lifetime's worth about the regulations of OBD II. Be forewarned -- this stuff would put Greenspan to sleep!
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Bob
2002 Cobalt 226 350 MPI B1


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#125310 - 12/14/06 07:09 PM Re: Engine Code Scanner
Al Offline
Nautical Alchemist
Grand Poobah

Registered: 01/14/03
Posts: 15010
Loc: Vagabond Wanderer from Mich.
Yea, they are Crusaders, GM block. The manual says ALDL, which I have not been able to find much about. The manual also says that the (unfornuately now out of production), B&G Engine Computer can be hooked to the engines.
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2004 Mercury 270 Airdeck Dinghy.
2011 Four Winds 28Z Class C Motorhome (Ford E450).

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#286300 - 01/23/07 12:02 PM Re: Engine Code Scanner [Re: Capn Morgan]
deepv Offline
Safety Officer
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Registered: 03/17/04
Posts: 8498
Loc: SoCal
 Originally Posted By: Capn Morgan
This is a very long read, but it will answer many questions on this topic. Interesting that Volvo has new EFI control modules on all 2006 and newer engines, The new EGC (Electronic Gas Control) modules are much different than the ECM'spreviously used on earlier engines.

http://216.230.203.183/acro/connect.pdf


Thanks for that link!
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72% of fatal boat accidents are caused by
boaters that haven't taken a safe boating course.


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#286319 - 01/23/07 01:14 PM Re: Engine Code Scanner [Re: deepv]
Capn Morgan Offline
Scallywag
Admiral

Registered: 06/21/04
Posts: 10884
Loc: West Michigan
You're welcome deepv. It only took a month for someone to read it, but it's there if anyone is interested. I think Al probably wrote part of the article anyway. ;\)
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#291054 - 02/09/07 02:17 PM Re: Engine Code Scanner [Re: Capn Morgan]
seabuddy Offline
Admiral

Registered: 12/15/02
Posts: 28862
Sourse for the scan tools?

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#291062 - 02/09/07 03:02 PM Re: Engine Code Scanner [Re: seabuddy]
Lou C Offline
Admiral

Registered: 01/20/03
Posts: 1446
Loc: Long Island NY
Actron makes a lot of automotive ones, I have an OBD-II one I have used.
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88 Four Winns 200 Horizon 4.3 OMC
98 Jeep Grand Cherokee 4.0 Six Selectrac
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#291148 - 02/09/07 08:31 PM Re: Engine Code Scanner [Re: Lou C]
seabuddy Offline
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Registered: 12/15/02
Posts: 28862
Which marine engine does that work with? Merc? Volvo?

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#291249 - 02/10/07 11:25 AM Re: Engine Code Scanner [Re: seabuddy]
Lou C Offline
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Registered: 01/20/03
Posts: 1446
Loc: Long Island NY
I did a search on their site, I don't know if any of their scanners will work with the Merc/Volvo engines, I bet if you looked in the shop manual for either it would tell you what type of scanner is needed.
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88 Four Winns 200 Horizon 4.3 OMC
98 Jeep Grand Cherokee 4.0 Six Selectrac
07 Jeep Grand Cherokee 5.7 HEMI Quadradrive II

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#291267 - 02/10/07 01:53 PM Re: Engine Code Scanner [Re: Lou C]
seabuddy Offline
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Registered: 12/15/02
Posts: 28862
Thanks.

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#291280 - 02/10/07 03:37 PM Re: Engine Code Scanner [Re: seabuddy]
Lou C Offline
Admiral

Registered: 01/20/03
Posts: 1446
Loc: Long Island NY
You know if I could be assured that I could get an after market scanner just like you can for cars, I wouldn't mind having an EFI sterndrive. The idea of being able to easily check all the sensors is enticing, but I am still concerned about the effects of E10 gas+water in an open fuel storage system with respect to high pressure fuel pumps and fuel injectors. I haven't had a major issue with my old style carburated sterndrive as of yet.
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88 Four Winns 200 Horizon 4.3 OMC
98 Jeep Grand Cherokee 4.0 Six Selectrac
07 Jeep Grand Cherokee 5.7 HEMI Quadradrive II

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#292663 - 02/16/07 07:20 PM Re: Engine Code Scanner [Re: Lou C]
seabuddy Offline
Admiral

Registered: 12/15/02
Posts: 28862
On can always order such a tool from the engine maker.

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#292732 - 02/16/07 11:00 PM Re: Engine Code Scanner [Re: Lou C]
BillyB Offline
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Registered: 10/29/04
Posts: 7510
Loc: Peoria, Illinois
Lou, granted my EFI is not as complex as the MPI now used, but even on them you don't need a scan tool to diagnose high pressure fuel pump issues. You need a pressure guage. And the fuel pumps on those Merc MPI engines do have regulator issues from time to time. My father has diagnosed three with a pressure guage, when the affected engines started running extremely rich. Don't need a scan tool to tell you that black soot and gas smell equals too much fuel. I am not trying to belittle you, I am just pointing out that simple diagnostics still can apply even to fuel injected engines. So no need to avoid them, in my opinion.
And if E10 is gonna mess up injection systems, it'll do the same or worse to your carb. (but you are okay there too, E10 isn;t going to hurt as much as people think)
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#292747 - 02/17/07 04:53 AM Re: Engine Code Scanner [Re: BillyB]
Lou C Offline
Admiral

Registered: 01/20/03
Posts: 1446
Loc: Long Island NY
What about all the sensors the EFI needs to operate? Back in the earlier days of EFI I used to trouble shoot sensors by just taking readings with the digital VOM, that was before the diagnostics monitored as much as they do now. And sure we tested fuel pumps by using pressure gauges. If you get a bad running problem, it is a lot easier if the scan tool can tell you what's causing it, especially if it is a misfire problem that will not show up on a test of a sensor with an ohmmeter or a pressure test on a pump.
The main concern I have is the fact that we are in a salt water environment, and corrosion can cause a lot of trouble with electronics. But high tech outboards are using injection systems, so it must be workable with good quality materials. Cheap wiring turns green fast here!
The E10 issue still concerns me, in that yes it does not cause problems in cars, that has been well proven, but boats use an OPEN fuel vent system, and the alcohol absorbs moisture from the air, eventually leading to phase seperation when the gas can no longer absorb any more water. A lot of people are pumping water out of the bottom of their boat gas tanks around here.
_________________________
88 Four Winns 200 Horizon 4.3 OMC
98 Jeep Grand Cherokee 4.0 Six Selectrac
07 Jeep Grand Cherokee 5.7 HEMI Quadradrive II

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#292757 - 02/17/07 06:10 AM Re: Engine Code Scanner [Re: Lou C]
BillyB Offline
Admiral

Registered: 10/29/04
Posts: 7510
Loc: Peoria, Illinois
I don't think the electronic sensors in modern EFI systems go bad as often as you fear. My father operates a lot in salt water, and doesn't have a lick of electronic trouble on his 01 Chap with twin 5.0 EFI, and it has 600+ hours. Same for my wet slipped (dirty fresh water in the Illinois River) 97 5.7EFI with over 700 hours, not one electronic or fuel failure.
And that is also why i say that E10 won't be as bad as you are being scared to believe. E10 has been in IL for longer than I have, and I have been using it in my boat since 2001. Stored it over the winter full nce, empty once, half full, 3/4s, doesn't matter, no problems at all. AS I said months ago somewhere else, I've only changed the fuel/water separator once in 5 years and 500 hours, and that was cause I felt guilty for not doing it!
I do agree that boats that have NEVER had ethanol in them could have some issues, but the majority won't.
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