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Home >> Volvo >> 2004 >> S40 T-5, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Ignition And Engine Control Systems - Specifications, Other (544 Body) >> Vehicle Communication Information, Engine Control Module (ECM) (B5254T3; 2004-2007) >> Description Of Parameters >> Parameters, Value >> Generator (Gen), Target Value
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Generator (Gen), Target Value

The engine control module (ECM) controls the generator (GEN) via LIN communication when requested by the central electronic module (CEM). The parameter indicates the charge voltage requested by the engine control module (ECM) for the alternator control module (ACM).

When the engine is running, the value of the parameter must be approximately the same (or slightly higher) than battery voltage.

With the ignition on, the value of the parameter must be approximately 10.6 volts.