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Home >> Volvo >> 2003 >> V70 T-5, Standard >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Bulbs, Control Modules, Charging - Design And Function >> Differential Electronic Module (DEM) (Aw50/51 AWD; M66 AWD; 2005-2007) >> 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.