Torque request for engine braking
WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
During engine braking, it is possible that the speed of the front wheels will become lower than the rear wheels. If the speed of the car exceeds 25 km/h and the engine torque is below -50 N.m, the TC/ABS control module will request increased engine torque to maintain directional stability.
There are two alternatives for a request for increased torque
- If the front wheel speed is between 2 and 5 km lower than the rear wheel speed, the TC/ABS control module will request an engine torque of -10 N.m.
- If the front wheel speed is more than 5 km lower than the rear wheel speed, the TC/ABS control module will request an engine torque of +10 N.m.
A higher torque will not be requested at vehicle speeds below 25 km/h.