Component description of headlamp range adjustment power module - GF82.10-P-2117GZ
MODEL 164.1/8 up to 8.7.07 with CODE (615) Bi-xenon headlamp unit with integrated curve illumination
Shown on model 164.1
Location
The HRA [LWR] power module for the front left lamp unit and the HRA [LWR] power module for the front right lamp unit are located under the housing of each lamp unit.
Task
The HRA [LWR] power modules actuate, on request from the headlamp range adjustment control unit (N71), the following adjustment motors:
- Left headlamp range adjustment motor (E1m1)
- Right headlamp range adjustment motor (E2m1)
- Left dynamic curve illumination motor (E1m2)
- Right dynamic curve illumination motor (E2m2)
Right/left detection through plug coding inquiry
After connecting a new HRA [LWR] power module (as backup), the HRA [LWR] power module recognizes the particular installation location by the voltage levels at two connector pins.
After fault-free detection of the installation location the HRA [LWR] power module registers accordingly at the headlamp range adjustment control unit.