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Old 01-22-2018, 08:06 AM   #1
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Data port and switches ?

After much searching here and googleing with no luck, I come to the best place on the net for advice.

I have a 2002 Dsdp with an ISC 350 on a spartan chassis. I located my diagnostics port under the dash and also found these 3 switches, I can find no mention of the switches in the Cummins or Spartan manuals I have. Could someone please explain these switch functions or point me to a web link that will explain them.

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Old 01-22-2018, 08:19 AM   #2
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It Looks like there is writing under switches. Couldn't read from photo but does that give you any information? Had a 04 Essex on Spartan chassis with connector for computer input but no switches next to connector.
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Old 01-22-2018, 08:27 AM   #3
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Quote:
Originally Posted by tom chelbana View Post
It Looks like there is writing under switches. Couldn't read from photo but does that give you any information? Had a 04 Essex on Spartan chassis with connector for computer input but no switches next to connector.
Left to Right

ENG DIAG, INC/DEC, ABS DIAG

The ABS Diag switch is in the ON position.
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Old 01-22-2018, 11:18 PM   #4
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Quote:
Originally Posted by Ragtop69GS View Post
After much searching here and googleing with no luck, I come to the best place on the net for advice.

I have a 2002 Dsdp with an ISC 350 on a spartan chassis. I located my diagnostics port under the dash and also found these 3 switches, I can find no mention of the switches in the Cummins or Spartan manuals I have. Could someone please explain these switch functions or point me to a web link that will explain them.

Attachment 189589
The switches flash a light on the dashboard to advise what failure code has been set in the system that is switched "On" using those switches.

The round connector is for a scan tool to be connected to get same info plus more. Your year vehicle would have J1708 protocol (heavy truck prior to J1939). It is NOT OBDII, but serves a similar function.
The connector is likely a Deutsch 9 pin. There should be another one around the trailer hitch area to bring the scan tool to the engine area.
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Old 01-23-2018, 04:09 PM   #5
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The switches flash a light on the dashboard to advise what failure code has been set in the system that is switched "On" using those switches.

The round connector is for a scan tool to be connected to get same info plus more. Your year vehicle would have J1708 protocol (heavy truck prior to J1939). It is NOT OBDII, but serves a similar function.
The connector is likely a Deutsch 9 pin. There should be another one around the trailer hitch area to bring the scan tool to the engine area.
Thank you Dav L for that info. Yes I do have the 9 pin Deutsch connector. I was under the assumption that J1939 was the protocol in 2002, thanks for setting me straight about that. I am looking for a used VMSPC or ScanGaugeD so knowing the protocol I run with is very helpful.

Thanks again neighbor
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