System Components

TCS Modulator Base Braking Mode (Typical):

TRACTION CONTROL OPERATION DURING BASE BRAKING
Each Traction Control System (TCS) channel consists of a motor, piston, ball screw, spring, and poppet valve. Under normal operating conditions (base brakes) the piston is located in the downward (or home) position and the poppet valve is unseated. This is accomplished by turning the ball screw via the motor to drive the nut downward. The brake fluid enters the inlet port of the TCS modulator, flows past the unseated poppet valve to the outlet port of the TCS modulator, and then out to the rear brakes. There are no solenoid valves or Exspansion Spring Brakes (ESB)'s within the TCS modulator.

ABS AND TRACTION CONTROL SYSTEM COMPONENTS
The ABS VI/TCS Antilock Braking TCS consists of a conventional hydraulic brake system plus antilock and traction control components. The conventional brake system includes a vacuum power booster, master cylinder, front disc brakes, rear disc brakes, interconnecting hydraulic brake lines, low brake fluid sensor, and a red BRAKE warning indicator. The ABS/TCS components include separate hydraulic modulator/motor pack assemblies, an integrated Electronic Brake Traction Control Module (EBTCM), an adjuster assembly, four wheel speed sensors, an electronic brake control relay, a TCS enable/disable switch, an amber ABS warning indicator, an amber TCS wanting indicator, a common ABS/TCS active indicator, and interconnecting wiring.