Section 10 (Lighting - General Diagnostics And Tests)

WARNING: This page is about a different car, the 2007 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.

Check Of Voltage/Ground Connection, Headlamp Control Module (HCM) (2007)
- Checking The Power Supply And Ground Terminal
  - Power Supply Headlamp Control Module (HCM)