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Charging System Control Module: Description and Operation

Overview, ACM connection
The Alternator control module (ACM) is connected to the Central electronic module (CEM) for the following engines:
- B5204T5
- B5234T7
- B5244S
- B5244S2
- B5244S6
- B5244SG
- B5244SG2
- B5244T4
- B5244T5
- B5254T2
- B5254T4
- B6294S2
- B6294T
- D5244T
- D5244T2
- D5244T3
For other engines, the Alternator control module (ACM) is connected to the Engine control module (ECM).