WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Control Module Installation
Courtesy of VOLVO CARS OF NORTH AMERICA.
Check that none of the pins or sockets on the connector are damaged.
Install the new control module
Ignition on
Read off and erase diagnostic trouble codes (DTCs).