Preparations for checking the check valve
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Volvo S80, 2005 Volvo S80, 2004 Volvo S80, 2003 Volvo S80, and 2002 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.
Remove the plastic cover over wiring, as shown.
Remove the positive cable nut.
Lift out the positive cable and fold to one side.
Remove and the cable holder nut.
Remove the holder.
Reinstall the positive cable so that the engine can be started.