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Home >> Volvo >> 2011 >> S80 Base, 3.2 94 >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Miscellaneous Electrical - Design And Function - 3 Of 5 >> Headlamp Control Module (HCM) (2007-2009) >> Diagnostic Functions >> Notes
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Diagnostic Functions: Notes

The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.