Section 4 (Headlamp Control Module (HCM) - General Diagnostics And Tests)

WARNING: This page is about a different car, the 2011 Volvo S80, 2010 Volvo S80, 2009 Volvo S80, 2008 Volvo S80, and 2007 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.