VMSpc -USB Causes J1939 Data Link Trouble

Can this VMSpc cause this proublem. This trouble started when I bought the VMSpc and plug the round 6 pin plug in under the dash it ramdomly brings on the ABS and ATC light.
The diag. print out showes quite a few ramdom errors.
Mostly TRN SID 231 9 SAE J1939 Data Link. Then the Transmission showes CODE d1-00 Serial Communication Interface Fault.
Some times it works OK and some times it brings on all these troubles.
2002 Monaco Windsor ISC350, MH3000 Trans

Hmmm.

Possibly. My first question is, how often and when does this occur? Does anything else unusual happen along with it, such as data drop-outs in VMSpc?

One easy thing to check. Since you have a 6-pin plug, make sure that the inside the JIB the "120 Ohm" jumper is connected. (Open up the JIB and you'll see the jumper near the center.)

VMSpc -USB Causes J1939 Data Link Trouble

I opened the JIB and I see 3 treminal blocks
J1 = Jumper on
J1708 = 2 Jumpers on the left
J4 = USB Pwr on.
It happines ramdomly with no data drop outs and the Trans will not shift into 6th. gear while it shows the trouble. Is the 120 ohm jumper in the plug or in the box.
Thanks.
Bill Zandonatti

JIB Connections - J1939 Data Link Trouble

I opened the JIB and I see 3 treminal blocks
J1 = Jumper on
J1708 = 2 Jumpers on the left
J4 = USB Pwr on.
It happines ramdomly with no data drop outs and the Trans will not shift into 6th. gear while it shows the trouble. Is the 120 ohm jumper in the plug or in the box.
Thanks.
Bill Zandonatti

This is strange.

The J1939 data fault that is reported shouldn't have anything to do with VMSpc. Since you have a six pin plug, the J1939 isn't even connected to the JIB. (The nine pin plug adds the J1939 data bus. That's the difference between the two plugs.)

If, by some chance, you really have a nine pin plug, remove J1, the 120 ohm jumper.

Freightliner/Cummins-ISC350 Support?

I have a 2003 Revolution built on Freightliner XC chassis with Cummins ISC350. I have connected the 6-pin connector under the dash to a OBD11 converter plug and the OBD11 converter cable to a OBD11 Bluetooth transmitter. The bluetooth connection is accessible to an application on Android cell phone. The android application connects to the bluetooth transmitter, but will not connect to the ECM.

What type of 'protocol' is used for the 6 pin connector to the ECM? I hope you can help me. Thanks in advance.

Dave

re: What type of 'protocol' is used for the 6 pin connector

Hello Dave
The 6-pin connector is an SAE standard, J1587, also known as J1708.

This sounds like quite the nerdy adventure--keep us posted!

cheers

Art
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