Read Off the Control Module Identification
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.
The control module can be identified by reading off a code from the control module memory. This code contains information about the control module P/N and the current software version.