Controlling the Generator

Controlling The Generator (GEN) (2005-)







The engine control module (ECM) (4/46) regulates the charge voltage of the generator (GEN) (via LIN communication) when requested by the central electronic module (CEM) (4/56) (via CAN communication).

The engine control module (ECM) can change the charge voltage requested by the central electronic module (CEM). to suit certain operating conditions such as engine start, idle speed or high engine load.

The value of the charge voltage requested by the engine control module (ECM) and the charging current of the generator (GEN) can be read off using Vehicle Information and Diagnostics Application (VIDA).

The alternator control module (ACM) transmits fault information to the engine control module (ECM). Diagnostic trouble codes (DTCs) are stored in the engine control module (ECM).