Checking the power supply and ground

Check that the fuse for the control module is intact.

Check the power supply and grounding point of the headlight control module (HCM).

Other information 

• See Checking the power supply and ground terminal
• For information about fuse and terminal numbers, see the relevant Wiring Diagram.
• See Checking wiring and terminals

Fig 1: Identifying Headlight Control Module (HCM)

Courtesy of VOLVO CARS OF NORTH AMERICA.

Was a fault detected? 

• YES 

  Refer to Checking headlight control module (HCM) 

• NO 

  Refer to Checking communication with the headlight control module (HCM)