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Home >> Volvo >> 2012 >> XC90 R-Design, FWD >> Repair and Diagnosis >> Electrical >> Charging Systems >> Electrical Systems - System Overview >> Headlight Control Module (HCM) (2007-2014) >> Diagnostic Functions >> Notes
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Diagnostic Functions: Notes

GENERAL 

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

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