Volvo VNL D13 ACM SCR Aftertreatment Control Module lost communication fault code

Diagnosing trouble shooting and repairing a Volvo VNL D13 ACM SCR Aftertreatment Control Module lost communication fault code. Very similar process on all 2010 and newer models.

[@andreypodushinskiy1680]

Thank you. Just fixed exactly like on your video by my self on the way to dealer. No code. Check the fuse on the battery of and on and everything is back to normal. Was parked all day and soon got beeping sound battery need charge start the truck and probably low voltage give shortage.

[@mechmobile2019]

Glad you saved yourself a visit with the thieves. That's why I do what I do, to help people like me, working to provide for their life while the politicians are too busy robbing us around the clock ;)

[@TLoGreen26]

Thank you for this video!

[@mechmobile2019]

You are welcome, pass video on to help other men feed their families

[@MengisKidane]

Thanks

[@randallmercer4995]

Great video...thank you. What program or website did you get the step-by-step diagnostics from? Would love to have access to it, if available. Thanks again.

[@mechmobile2019]

I googled 2015 Volvo D13 ACM wiring diagram and it was off the actual volvo site I believe, one of the official volvo sites, it was free. One of the other viewers 40TONN, check his comment, I replied with a link to thr schematics, one of them

[@JLOTRAN]

Hi , i have the same problem now in my truck, def level and temp ex off , may i call you by phone ?

[@40TONN]

Where did you get this scheme?

[@mechmobile2019]

Searched Google for it, I can get you the info to site when I get a little time

[@mechmobile2019]

Googled. 2015 volvo vnl 780 d13 acm wiring diagram and comes up with some pdfs and sites, this next link is for Volvo WIRING DIAGRAM INDEX - Volvo Trucks Academy www.volvotrainingsupport.com/-/media/vtna/files/shared/body-builder/wiring-diagrams/april-2017-p6605-modular-22622040_05_1.pdf

[@silverjohn4319]

That fuse was my issue The def gauge would not read when fuse was not connected and truck would say DERATE IN 5 minutes

[@mechmobile2019]

I'm glad you got your truck on the road. Be safe driver.

[@am.b5688]

Just change the harness, it doesn't worth the time!

[@mechmobile2019]

Yes, changing the harness is a task that's doable, but it's going to cost time and money taking everything out and disconnecting, then running a new one. Just in the time it would take to remove a wire harness, it would take to diagnose it and then find the corroded one and fix, minus $1000 bill for the wire harness. On other hand, diagnosis is the way to eliminate all the other sensors since they are tied in to same ACM.

[@am.b5688]

You are right about diagnosing first, but if you look at those wires, how many of these were fixed and reattached!@@mechmobile2019