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Old 06-28-2017, 08:17 PM   #1
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Can anyone tell me what this is? Pic

I'm looking for the ODBII port on my bus and I came across this which had some wiring harness plugged into it that said Zonar, I have no clue?
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Old 06-28-2017, 08:38 PM   #2
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trucks don't use obdii, they have their own protocol. j1939 or j1708 are the truck connectors
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Old 06-28-2017, 08:45 PM   #3
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trucks don't use obdii, they have their own protocol. j1939 or j1708 are the truck connectors
So what am I looking at here, and is there a good thread on how to pull a check engine code or clearing them?
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Old 06-28-2017, 08:51 PM   #4
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im no help. my truck is mechanical.

but a quick search on 'zonar' says its a gps tracking device.

someone with some modern diesel experience can answer better than me, some day i'd like one of those fancy data readers
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Old 06-28-2017, 09:06 PM   #5
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What kind of bus?

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Old 06-28-2017, 09:31 PM   #6
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What kind of bus?

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2002 Freightliner Thomas body 5.9L with Allison 545, it had a lift in the back and was not full length.
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Old 06-28-2017, 09:38 PM   #7
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In addition to GPS tracking, ZONAR also has a system of RFID chips/reader to verify pre operation inspections. My bus had a bunch of half dollar size ZONAR RFID chips inside and out at every inspection point. I think the driver carries a RFID reader with them that verifies the inspection. So I suspect your device was related to GPS and vehicle operation data collection. Should not affect vehicle operation. I'm pretty sure the short cutaway style busses (i.e. based on E350/E450) have OBDII
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Old 06-28-2017, 09:47 PM   #8
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Yeah I pulled apart the whole dash and followed all the wires thinking I would find an ODBII l, I was just an idiot and pushed a switch by the steering wheel that said "engine check" and when I hit it the check engine light came on, it's not ever been on since I've had it and now can't get t off
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Old 06-28-2017, 09:51 PM   #9
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Push the switch again? Push and hold 'til light goes off??
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Old 06-28-2017, 09:53 PM   #10
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Yeah I pulled apart the whole dash and followed all the wires thinking I would find an ODBII l, I was just an idiot and pushed a switch by the steering wheel that said "engine check" and when I hit it the check engine light came on, it's not ever been on since I've had it and now can't get t off
It may stay on for a set amount of time... Like 100 miles, or x amount of start cycles. If it wasn't on before it likely doesn't mean anything.

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Old 06-28-2017, 10:06 PM   #11
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It may stay on for a set amount of time... Like 100 miles, or x amount of start cycles. If it wasn't on before it likely doesn't mean anything.

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I thought it would be too, but I've just about driven 120 miles and started up about 20 different times in the past week
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Old 06-28-2017, 10:12 PM   #12
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Have you tried a Google search...

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Old 06-28-2017, 10:16 PM   #13
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Yes right when it came on, finding bus stuff is hard, since it didn't o off after 100 miles I'm turning to the forums
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Old 06-28-2017, 10:26 PM   #14
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Yes right when it came on, finding bus stuff is hard, since it didn't o off after 100 miles I'm turning to the forums
My "service engine soon" light came on when I bought my bus. The mechanic hooked it up and it was a reminder light that I needed to change the oil. It went off about 200 miles into the trip home (the oil had been changed at the dealer that morning) and hasn't come on again.

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Old 06-28-2017, 11:06 PM   #15
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So what am I looking at here, and is there a good thread on how to pull a check engine code or clearing them?
It's a j1708 plug, plugged a Scangauge D into mine and I can read and clear codes and much more.
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Old 06-29-2017, 12:12 AM   #16
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It's a j1708 plug, plugged a Scangauge D into mine and I can read and clear codes and much more.
There we go! I've got one in my amazon cart need to pull the trigger now
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