The throttle body was connected directly to the gas pedal by a cable or linkage.
Volvo Car UK released public statements regarding this and these are documented below. VOLVO 60 SERIES 01 w/turbo VOLVO 70 SERIES 01 SW, w/turbo, XC VOLVO 70 SERIES 01-02 Cpe & Conv VOLVO 70 SERIES 99-00 VOLVO 80 SERIES 99-01 Up for sale is a nice used volvo Turbo Throttle body.
5L, 5-cylinder luxury crossover SUV Electronic Throttle Body Calibration (How To:) I usually do an electronic throttle body calibration every 6 months or so.