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RMS Technical Training
65 members • $34/month
25 contributions to RMS Technical Training
7d •
2014 VW Transporter
Came in with EML on and P040100 EGR insufficient flow. Found a TSB on DDTSB for this fault and gave some know good and bad readings to check at the EGR plug. Pin1 5v feed. Tested at 5v Pin2 should be 3.6v Tested at 12.3v Pin3 Ground Tested 0v Pin 4 empty Pin5 0.8v. Tested 0.6v Pin6 4.3v Tested 12.3v Bad EGR pin 2 0v Pin 5 0.6v Pin 5 tested the same as the bad data but its pin 2 & 6 as they are twisted so that indicates CAN lines to me. Also scoped and no waveforms at all Same voltage when it’s unplugged and when running Pin 6 goes with to whatever the battery is charging at. When left with ignition on engine off it will all by itself drop to around the correct voltages then spikes up to 12v again Code clears out and reading are still the same Pin 2 & 6 go to the motor according to Alldata Unfortunately customer had to take the van today but is rebooked for next week and my next step was to voltage drop test and load test the wires I suspect possibly a short to ground but any help/ advice would be appreciated as I could be scratching my head on this one!
0 likes • 6d
Hi, are you sure that the twisted wires belongs to a network? Im not sure that they would use CAN wires to communicate with an EGR valve, too costly plus not that critical of a component to use network control on. Do you have the wiring diagram?
1 like • 6d
@Tim Duckworth-Shaw well they can be twist to avoid crosstalk or to reduce electromagnetic force. They use this method on various devices that has the potential. There may be a possibility short to power on those pins. Can be internal of the component or module. I could be wrong seeing that Im not by the vehicle, let me know what you find
6d •
Live session egr valve,
We have just had a good question about a egr valve in the chat,I think I should be able to do a live session talking about this on Monday evening,what do you all think?
0 likes • 6d
I would say, throw the scope on the solenoid while giving it the command to see how it reacts would he helpful. To have a better understanding of the valve and its positions.
10d •
Did you get notified??
I loaded a new video last night to the case studies,did anyone get a notification??
0 likes • 10d
No nothing on my end
14d •
Mobile mechanic/diagnostics
Anyone on here doing Mobile repair work Pros and cons Am not able to access suitable premises in my location looking to go mobile tools ? Power supply, compressor Vehicle set up ? Insurance ? Customers to avoid Jobs that are best to concentrate on
1 like • 13d
I did mobile work years ago. It was really fun but as I got older. I needed a shop. Too much traffic, up and downs, bad paying client's. You name it I got it. But I would say. I got to move around. Focus on your client list. Where it would be personal clients or through a shop and take it from there
14d •
WhatsApp group??
Does anyone think a WhatsApp group would help with notifications of new videos and help subjects?? I’m not sure if you all get notified when I load more videos of any new posts i load.
0 likes • 13d
The whatapp group would be a solid add on but if guys are not locked in here. I don't think they would in the WhatsApp group. Food for thought
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Active 3d ago
Joined Feb 24, 2026
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