On this page we will inform You how to find ACM & NOx sensors on Volvo/Mack OBD2 trucks.
When doing a delete tuning, You have to disconnect ACM & both NOx sensors (before tuning)!
Mack DPF DEF SCR delete tunes
Volvo DPF DEF SCR delete tunes
- ACM - Aftertreatment Control Module
It is usually located in one of these locations:
- Between fuel tank and DEF tank
- Under the cab(close to DEF & fuel tank)
Here are some photos of the ACM & it's potential location.
This is how ACM looks like
ACM between fuel & DEF tank
ACM under the cab(close to DEF & fuel tank)
- Between fuel tank and DEF tank
- NOx sensors - In & Out
There are 2 NOx sensors, You have to unplug them both!
Make sure to unplug harness going from the engine bay to NOx controller(usually it is narrower connector).
Below are the photos of how NOx sensors look like, and potential location(can vary from truck to truck).
This is how Volvo/Mack OBD2 truck's NOx sensor look like
Example of NOx location on Volvo/Mack OBD2 trucks
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