Webwhen i checked the diagnosis it’s giving me a acm code 3223 and 520363 ats electrical system problem detected. What could be causing it and is it safe to. Web4a. 3 load the system with the carbon pile to the alternator amperage rating for 5 to 10 seconds. When the load is applied, there is a connection problem; Webthoroughly inspect the wiring harness and connector pins going to your inlet nox sensor for any damaged or corroded wiring and connector pins that would cause an open. Webcode 520363 on a freightliner cascadia refers to a problem with the ats electrical system. The ats, which stands for automatic transfer switch, is a critical. Webbought a new acm from freightliner, had it programed, installed it. Now, my acm codes are gone and im getting spn1231 fmi 2 count 7 mcm can1 signal. Perform the scr efficiency test or high idle regeneration. Use diagnosticlink to clear the. Ask for help, 24/7.
