It supposedly releases and engages the clutch really fast several times per second when the wheels start to slip...
It's like an ABS but for the clutch although with an AT there is no really a clutch but a bunch of pieces with the torque converter...
In the same way the ABS releases the brakes when the wheels lock, the lunch control is supposed to release the clutch when the wheels slip and re-engage when they stop slipping...
It's not the same as traction control as TC cuts power, instead launch control does it by releasing the clutch, so RPMs are still up so when it re-engages you have all the power from the engine
hope it helped you understand ....
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