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Home >> Volvo >> 2021 >> S90 T6 R-Design >> Repair and Diagnosis >> Electrical >> Charging Systems >> Alternator And Regulator - Design >> (Alternator Control Module ACM) >> Alternator Control Module ACM (4/98, 6/26) [2017-2022, B4204T27] >> Connection And Communication
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Connection And Communication

The alternator control module ACM is a LIN slave and communicates with the Engine Control Module (ECM). The Engine Control Module (ECM) then forwards information via CAN to the Central Electronic Module (CEM).