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Home >> Volvo >> 2007 >> XC70 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Headlamp Control Module (HCM) - Vehicle Communication Information (AWD) >> Vehicle Communication Information, Headlamp Control Module (HCM) (2007) >> Description of parameters >> Parameters, value >> Power supply, value

Power supply, value

Measurement range 6 - 20 V.

Indicates the power supply to the headlamp control module (HCM).

The normal value when the alternator is charging: 13.0-14.5 V.