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ABS TRACTION CONTROL HYDRAULIC CIRCUIT, The hydraulic diagram shows the vehicle in the traction control (TC) mode (Fig. 9). The diagram • The normally open TC (ASR) valve is energized to isolate the brake fluid being pumped from the • The normally open TC (ASR) valve bypasses the pump output back to the master cylinder at a fixed • The normally open and normally closed valves modulate (build/decay) the brake pressure as required to the spinning wheel. INTEGRATED CONTROL UNIT - DESCRIPTION The hydraulic control unit (HCU) and the control- ler antilock brake (CAB) used with this antilock The ABS ICU consists of the following components: the CAB, eight (build/decay) solenoid valves (four The ABS ICU with traction control consists of the following components: the CAB, eight (build/decay) Fig. 9 Hydraulic Circuit - Traction Control Mode 1 - OUTLET VALVE 10 - FROM MASTER CYLINDER CS BRAKES - ABS 5 - 59 HYDRAULIC CONTROL UNIT (Continued) |