Checking the function of the ABS system
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.
Read off the diagnostic trouble codes (DTCs).
Test drive the car. Check that the ABS warning lamp goes out.
Read off and check whether any diagnostic trouble codes (DTCs) have been stored.