Home >> Porsche >> 2003 >> 911 Carrera 4S, Standard >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Anti-Lock Brake System (Abs) - 5.3 & Abs/TC 5.3, Diagnosis - 911 CARRERA (996) >> ABS 5.3 and ABS/TC 5.3 systems >> System test ABS and ABS/TC >> Test step 24 >> Possible causes, elimination, notes