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04-03-2014, 07:45 PM
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#1
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Senior Member
Join Date: Apr 2009
Posts: 238
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Obd ii port
I have a 2004 40DS03 Travel supreme and I have been trying to find if our Coaches have the OBD II to install a scan tool. I have looked around the lower dash area and to date have not been able to find it, perhaps they have stuck it in the engine compartment somewhere? Anyone out there ever chased this down? Thanks
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04-03-2014, 07:52 PM
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#2
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Senior Member
Join Date: Nov 2008
Location: Seattle
Posts: 789
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Federal law says that the OBD ii port must be located on the inside of a vehicle, within one foot of the steering column. It could have a cover on it making it very hard to see. You might try using a digital camera and take some pictures under you dash and then look at the pictures.
Safe travels.
JD
__________________
JD & Kathy and our Bichon Frise "Little Buddy Too"
2016 Winnebago Sightseer33C built on a 2016 F-53 Chassis
2009 Saturn Vue
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04-03-2014, 09:04 PM
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#3
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Senior Member
Join Date: Sep 2006
Location: Fulltime/ SE Minnesota
Posts: 3,116
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Mine is under the steering columm just where post above states, and does have a screw on black cover.
__________________
08 Foretravel Nimbus 40 ft tag axle / 1000 watts of solar
2019 Ram 1500 Big Horn Hemi 4x4
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04-04-2014, 04:36 AM
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#4
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Senior Member
Join Date: Nov 2009
Location: Arcadia, Florida
Posts: 565
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Quote:
Originally Posted by delcirose
I have a 2004 40DS03 Travel supreme and I have been trying to find if our Coaches have the OBD II to install a scan tool. I have looked around the lower dash area and to date have not been able to find it, perhaps they have stuck it in the engine compartment somewhere? Anyone out there ever chased this down? Thanks
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Mine is in the engine compartment. Looking at the engine, it is to the slightly lower right side. It has a knurled screw cap on it roughly the size of a silver dollar.
__________________
Dick Schaak
2011 Allegro 43 Bus
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04-04-2014, 06:35 AM
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#5
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Senior Member
Nor'easters Club
Join Date: Jun 2007
Location: NH
Posts: 942
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I have one under the dash (above the steering column and difficult to see) and a second one on the engine (passenger side forward). Just for clarification, the OBD II is a 16 pin (JS1962) trapezoid shaped automotive connector/protocol and is not the same as what is used on a diesel MOHO. As Dick pointed out, the diesel connector is round and is supplied with either 6 or 9 pins. My TS with a CAT engine uses the 9 pin (JS1939) connector and although I'm not 100% sure, I believe prior to the 04 model year the 6 pin connector was used. Good luck.
Lou
05 TS Envoy 38DS04
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04-05-2014, 05:54 AM
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#6
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Senior Member
Join Date: Nov 2009
Location: Arcadia, Florida
Posts: 565
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Quote:
Originally Posted by sailor_lou
I have one under the dash (above the steering column and difficult to see) and a second one on the engine (passenger side forward). Just for clarification, the OBD II is a 16 pin (JS1962) trapezoid shaped automotive connector/protocol and is not the same as what is used on a diesel MOHO. As Dick pointed out, the diesel connector is round and is supplied with either 6 or 9 pins. My TS with a CAT engine uses the 9 pin (JS1939) connector and although I'm not 100% sure, I believe prior to the 04 model year the 6 pin connector was used. Good luck.
Lou
05 TS Envoy 38DS04
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Lou!
How do you know all that stuff? I have trouble with my kid's names. Very impressive. Good example of the value of this forum.
__________________
Dick Schaak
2011 Allegro 43 Bus
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04-07-2014, 02:39 PM
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#7
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Senior Member
Nor'easters Club
Join Date: Jun 2007
Location: NH
Posts: 942
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LOL.....maybe because we don't have any kids I can keep track of all this other (less important) stuff.
Although the main reason is probably due to the fact that I worked in the Nuc Power Industry for 37 years as an Instrument & Controls Engineer and understanding and maintaining electrical/mechanical systems is kinda fun to me. I'm not sure if that's geeky or sad.
Lou
05 TS Envoy 38DS04
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04-07-2014, 07:53 PM
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#8
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Senior Member
Join Date: Nov 2009
Location: Arcadia, Florida
Posts: 565
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Quote:
Originally Posted by sailor_lou
LOL.....maybe because we don't have any kids I can keep track of all this other (less important) stuff.
Although the main reason is probably due to the fact that I worked in the Nuc Power Industry for 37 years as an Instrument & Controls Engineer and understanding and maintaining electrical/mechanical systems is kinda fun to me. I'm not sure if that's geeky or sad.
Lou
05 TS Envoy 38DS04
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Thanks, I feel better now.
__________________
Dick Schaak
2011 Allegro 43 Bus
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04-14-2014, 05:16 PM
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#9
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Senior Member
Join Date: Apr 2009
Posts: 238
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Well I have gotten very busy with other projects but on Sunday I had a little time and took pictures underneath the dash area, crawled my old body under there, looked all over with a mirror and finally decided to just remove the instrument cluster and stop standing on my head. Here is what I found, a round socket around the top and to the side of the bracket that supports the steering wheel assembly. There are three switches next to it like on the side that mangoes exhaust brake, docking lights etc..I have looked to no avail for a OBDII port. Perhaps I am missing something obvious. My unit was listed as a 2004 but it was in all reality put together in 2003 perhaps this is the difference..Any suggestions out there, I have the OBII scan tool but nothing else. The reason I am trying to do this is a mysterious check engine light that happened on my last leg of the trip last year a few miles from the barn. I reached down to hit the alarm cancel button but was on a stretch of road that did not allow for a shoulder area to pull over. By the time I found such a spot the light went off and has not returned. The only thing I could see on the instrument cluster that was anywhere out of range was the volt meter that indicated a little over 12 volts but I did have the headlights and all clearance lights going at the time as it was approaching dark. I have since then fired the girl up and checked that I was getting over 14 volts at the batteries and other than the fact that I had just filled the tank up and was driving over a winding, undulating two lane road I do not have a clue as to what the problem might have been. Any suggestions out there? Thanks
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04-14-2014, 05:38 PM
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#10
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Senior Member
Ford Super Duty Owner
Join Date: Jan 2011
Location: Lowell, Arkansas
Posts: 7,297
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When you said that you reached down and hit the cancel alarm button what did you mean. When a check engine light comes on there is no alarm. The amber light just comes on.
ODBII was standard in 1996 so if you are driving a gas engine you have a connector. I worked on cars/trucks for 35 years and taught high school automotive repair. I know exactly what I am looking for and I had a difficult time finding it because of the inability to see clearly under the dash. So I pulled the cover off the dash and spotted the connector very easily. It is gray in color and 1/2" to 3/4" thick and probably at least 2-1/2" wide and 3+ " long. It will have a cover over it which may hide it somewhat but it is there. It has to be there around the steering column as stated.
Look at your SCAN tool connector that will connect to your ODBII connection and look for something that would hook up t it.
TeJay
__________________
TeJay Auto Instructor/4-yrs USAF/ Liz: RN/ WBGO 2014 Vista 30T/ F-53/CHF/5-Star/Koni * Bella & Izzy * Golden /Cocker mix/ Louie The Cat* All Retired
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04-15-2014, 09:58 PM
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#11
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Senior Member
Join Date: Apr 2009
Posts: 238
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Well this is a Motor Home with a Diesel Engine. Anyway when the check engine light came on I also got a warning buzzer making quite a racket, in the process of trying to keep the Motor Home between the lines and check the major gauges on the instrument cluster for over heat, perhaps loss of oil pressure or something else that might signal a catastrophic failure I pushed the button on the right just below the speedometer on my Travel Supreme and this made the buzzer go away but the check engine light stayed on for about another mile then just went away. So anyway when I removed the instrument cluster from the dash as I was having no luck finding the OBDII port I did discover a round test port with what looked like nine female pin positions and three switched to the side of it. I could find nothing that looked like it was large enough to match up with the connector on my scan tool. Perhaps I need to get back in there and look some more. But as of now I have no warning buzzer nor a check engine light and everything seems to be operating fine, just don't want something major to be going on and be going down the road and screw something major up that is going to cost me an arm and a leg. So ya if anyone out there has gone through finding their's on a similar year and model I would appreciate the help in finding mine....
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04-16-2014, 06:25 AM
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#12
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Senior Member
Nor'easters Club
Join Date: Jun 2007
Location: NH
Posts: 942
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Tom,
You will not find an OBDII connector on a diesel MOHO. The OBDII protocol is for cars and light trucks with gas engines. It does sound like the round connector you found is the test connector. On mine there was short cable (approx. 5" long) with another connector plugged into it. I removed the short cable/connector and the existing 9 pin connector is where I hook up my laptop. What you need is something like the Silverleaf VMSpc or Scangauge D to plug into the round (6 or 9 pin) connector in order to read the engine parameters. See below:
Silverleaf VMSpc Diesel Engine Monitoring System
https://www.scangauge.com/products/scangauged/
I use the Silverleaf hardware and software with with my laptop and although I haven't read any error codes (and hopefully never will), I have use it to monitor many other engine parameters (ie: turbo boost, engine loading, tranny temps, etc).
Regarding the switches, I didn't notice any on my rig, but remember reading somewhere that switches were installed to provide an aid in diagnostics. I don't recall any specifics on their use, but will see if I can find any addition info. Hope this helps and good luck.
Lou
05 TS Envoy 38DS04
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04-16-2014, 11:14 PM
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#13
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Senior Member
Join Date: Apr 2009
Posts: 238
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Lou,
As per usual you are on top of things. Your observation as to the style and type of connector is right on. When I saw that and the three switches which kind of run at right angles to the connector I could make out some writing on the metal piece that they are attached to. I am sure they are used to initiate the scan sequence when you have the proper tool plugged into it. So anyway at this point ignorance might be bliss and I will just fire the old girl up and go down the road and hope for the best and a cummins dealer nearby when I need one....I had been on the road for months and many miles and the more I ran this girl the better she seemed to like it, so of course within 10 miles to the barn I get the warning light and buzzer going off on the worst possible stretch of road where you would just not like for it to happen. Because there just was no place to pull over I kept scanning all the gauges and the only thing that seemed a little of was the voltage. However as it was dark all my running lights and headlights were full on so I was showing a little over 12V where it normally indicates around 14V give or take. Perhaps it is time to replace the two interstate starting batteries as they are getting a little age on them. I just thought if it did have a port for a OBDII that I would look for the trouble code and remove the mystery behind the occurrence...Thanks again for your help...Tom...P.S. have you started putting that residential refrigerator in there yet????
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04-17-2014, 07:20 AM
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#14
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Senior Member
Nor'easters Club
Join Date: Jun 2007
Location: NH
Posts: 942
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Tom,
It may be worth a trip to the Cummins dealer just to see if there are any codes locked in, although the diagnostic service cost may approach the purchase price of the Scangauge D.
Interesting that you mentioned the fridge. Since winter this year just doesn't want to end (we had a dusting of snow yesterday and it was 28 deg. F last night), the cover is still on the MOHO and I haven't started anything that involves outdoor activities yet. However, I did order the Samsung and will be picking it up this Sunday, so I guess I am out of excuses and will most likely start removing the Norcold next week. Although it still functions just fine, all the discussions about overheating and fires isn't worth the risk to us any longer.
My wife has expressed some concern about the loss of the drawer below the fridge so I plan on converting the leg area of the desk into more cabinet space. Should be simple enough to install a few shelves and make two doors, but it all adds up on the already overloaded home/car/truck/MOHO "to do" list. I also need to adjust the valves on the engine this year along with the usual washing, waxing and wheel polishing to get ready for summer.
In addition, after about two years of looking we finally found and closed (last week) on some property in the lakes region of NH where we plan on building our retirement home. The house will be a few years down the road, but our goal is to build a large RV garage/barn this summer. The big question is how much do I want to do myself. Since it's about 3.5 hours north of our current home we are considering leaving the RV at a campground up there for the summer.
All in all, I see a pretty busy year ahead and will provide updates on the fridge installation once I get started.
Lou
05 TS Envoy 38DS04
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