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Home >> Volvo >> 2007 >> S40 T-5, AWD, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Miscellaneous - Design And Function (544 Body) >> Engine Control Module (ECM) (B5254T3; 2004-2007) >> Diagnostic Functions >> Overview >> Notes
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Diagnostic Functions: Overview: Notes

The engine control module (ECM) diagnoses both internal signals and functions as well as signals and functions from connected components.