ACCIDENT OCCURRED WHEN REAR OF CAR SLID LEFT DURING TURN WHILE DRIVING AT 30-40 MPH. AUTOMATIC TRACTION CONTROL (ATC) DID NOT ENGAGE AS IT WAS SUPPOSED TO, ALLOWING SLIDE TO CONTINUE. DRIVER PROPERLY CORRECTED STEERING. CAR OVERCORRECTED WITH THE REAR OF THE CAR SLIDING TO THE RIGHT. DRIVER PROPERLY CORRECTED AGAIN, BUT REAR OF CAR SLID AGAIN TO THE LEFT. DRIVER COULD NOT CORRECT IN TIME TO PREVENT SPIN, LEADING TO IMPACT WITH CONCRETE WALL. ATC IS SPECIFICALLY DESIGNED TO RESPOND TO THIS TYPE OF POSITION BUT DID NOT. DRIVER INJURED. CAR DAMAGED, WITH FRONT AND REAR SUSPENSION IN DISARRAY. *AK