Torque request during wheelspin
WARNING: This page is about a different car, the 2001 Saab 9-5. However, it is still accessible from the selected car via links, so may be relevant.
If one of the drive wheels exceeds the specified limit of wheel spin, the TC/ABS control module will request a lower engine torque from the engine control module. The engine control module will then regulate the throttle in the throttle body to provide a rapid reduction of torque. The boost pressure will subsequently be reduced if necessary.