Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!

CAN BUS question

  • Sjunjak
  • Sjunjak's Avatar Topic Author
  • Away
  • New Member
  • New Member
More
2 days 9 hours ago #93322 by Sjunjak
CAN BUS question was created by Sjunjak
2019 Ford Edge 2.0L. 
vehicle came in no start and no communication with any module. Testing at the actual Gate way Module DLC pins 6&14 I had 450K ohms with battery disconnected.
 Found connector C238 loose in passenger foot well due to connector being broken.
 My question is with this vehicle operating properly I only have 120 OHMS at 6&14 and NO WAVEFORM at all. Voltage is zero on 6&14 with vehicle running.
 Is this how these function normally? Seems counterintuitive to normal HIGH SPEED CAN testing.
Appreciate any information. Thanks

Please Log in or Create an account to join the conversation.

  • Chad
  • Chad's Avatar
  • Away
  • Moderator
  • Moderator
  • I am not a parts changer.
More
1 day 2 hours ago #93324 by Chad
Replied by Chad on topic CAN BUS question
Your readings are normal. Pins 6 & 14 are a "Diagnostic CAN". Until you plug a scantool in, there is only one module on this network, the Gateway Module, and therefore only one terminating resistor. 
If you want to see the expected 60 Ω, test on the other side of the Gateway Module. 
 

"Knowledge is a weapon. Arm yourself, well, before going to do battle."
"Understanding a question is half an answer."

I have learned more by being wrong, than I have by being right. :-)

Please Log in or Create an account to join the conversation.

  • Sjunjak
  • Sjunjak's Avatar Topic Author
  • Away
  • New Member
  • New Member
More
1 day 1 hour ago #93325 by Sjunjak
Replied by Sjunjak on topic CAN BUS question
Thanks Chad. I got myself all turned around on this, over thinking it. Appreciate your response.

Please Log in or Create an account to join the conversation.

Time to create page: 0.331 seconds