WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Ignition Switch OFF Position
Courtesy of VOLVO CARS OF NORTH AMERICA.
CAUTION:
Switch off the ignition and wait for the engine cooling fan (FC) to stop running. Wait at least 30 seconds before disconnecting the control module connector.