Location Of ACM
Manuel Mechanic Manassas, Virginia Posted Latest Edited
2017 Mack MRU MRU600 10.8L (MP7 355hp)
P21CA - Reductant Control Module Supply Voltage Circuit
I want to know where is located the after treatment control module.
Hi Manuel: It should be mounted on the inner frame rail. It has a protective cover over it held by 2 bolts or munted on the side of the DEF tank. HTH, Guido
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