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Old 03-23-2015, 01:08 PM   #1
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OBD connector location

Cannot locate OBD connector on 2000 Holiday Rambler Imperial.
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Old 03-23-2015, 01:42 PM   #2
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Ford chassis? It's there, either left or right of the steering column. Can be in a bundle of wires, have a cap on it or otherwise difficult to recognize. Mine was hard to find. Removed a piece of plastic trim under the column then could readily see it. Once known location don't need to remove the trim to get plugged into it.
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Old 03-23-2015, 01:44 PM   #3
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OBD connector location

Mine was on the upper right ( Ford ). Hard to find .
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Old 03-24-2015, 12:34 AM   #4
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Must be within 18 inches of the steering column. Sometimes they have a cover on them making the port harder to find.
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Old 03-24-2015, 02:50 AM   #5
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Ford or Workhorse chassis?
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Old 03-24-2015, 08:57 AM   #6
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It DOESN'T have one. It's a diesel guys.

LEN
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Old 03-24-2015, 06:46 PM   #7
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Quote:
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It DOESN'T have one. It's a diesel guys.

LEN
I agree. Diesel does NOT have obdII.

Nice catch...didn't even pay attention to that.
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Old 03-25-2015, 10:00 AM   #8
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Yellow warning light on. The light came on while driving with the generator on. All of the dash controls fluctuated wildly and then the light came on. I now believe that I have a bad relay between the coach and chassis battery. However I would like to turn the warning light off, because I don't believe that it was a true warning.
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Old 03-25-2015, 10:44 AM   #9
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Quote:
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It DOESN'T have one. It's a diesel guys.
LEN
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What makes you think diesels don't have a port for connecting a OBD reader?

MY Cat powered coach has 2 ...one in the cab near the steering column and one in the the rear curb side service bay.

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Old 03-25-2015, 11:21 AM   #10
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Both of my DPs (08 Safari & 13 Phaeton) have OBD connectors just to the left of the steering column.

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Old 03-25-2015, 11:27 AM   #11
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Diesels use a J1939 Diagnostic Plug for ECM communications, not OBD. It's a round 9 pin connector and there are usually two, one near the steering column and one near the engine.
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Old 03-25-2015, 12:50 PM   #12
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Quote:
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Diesels use a J1939 Diagnostic Plug for ECM communications, not OBD. It's a round 9 pin connector and there are usually two, one near the steering column and one near the engine.
Ron[/QUOTE]
Dennis_K
Although may be true of "SOMEdiesel powered powered coaches", it's NOT true of "ALL diesel powered coaches".

My 3126 Cat powered coach has 2 "6 pin J1708 Diagnostic Plugs".





When connecting my coach to their computer...my local Cat service shop uses an "adapter cord", (aka: a "wire harness").




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Old 03-25-2015, 04:33 PM   #13
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So exactly what is the difference between an OBD connector and a J1939 Diagnostic Plug for ECM communications besides physical characteristics?

Ron
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Old 03-25-2015, 06:51 PM   #14
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Back to the OP. Your connections should be either at the steering column(these can be really hidden) In the front electrical bay. or at the rear motor compartment. Once you find one and see how many pins are used a scanguageD will do what you want and will give you all your gauges and maybe a bunch of info you could use.

LEN
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