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Home >> Volvo >> 2003 >> V70 Base, 2.4 58 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Bulbs, Control Modules, Charging - Design And Function >> Headlight Control Module (HCM) (2007) >> Diagnostic functions >> General
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Diagnostic functions: General

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