V50 T5 AWD L5-2.5L Turbo VIN 67 B5254T7 (2008)
Headlamp Control Module: Description and Operation
Function
Function
Automatic headlight levelling
Position sensors (7/120-121) on the rear and front wheel suspensions send information to Headlamp Control Module (HCM) (4/114) about the vehicle's
angle depending on load conditions, acceleration, and braking.
Headlamp Control Module (HCM) uses information from the position sensors to calculate current angle for the headlights.
For vehicles with active headlights and GDL-lights, Headlamp Control Module (HCM) sends information bout current angle to Left headlamp control
unit (LHCU) and Right headlamp control unit (RHCU) via serial communication.
The actuators are controlled from Left headlamp control unit (LHCU) and Right headlamp control unit (RHCU).
Active headlamps (vehicles with active headlamps only)
