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 On Position (Position I)
Courtesy of VOLVO CARS OF NORTH AMERICA.
WARNING:
The battery must not be connected when the SRS ignition cable connector is being removed or installed.
Ignition switch to position I so that the steering wheel lock is disengaged.