IICL Chassis Inspector Exam | 2023 | 80 Questions with 100% Correct Answers | Updated & Verified

What is traction control? - Helps the ABS improve vehicle traction by minimizing wheel slip on the drive axle during acceleration. What is ABS? - Antilock braking systems are electronic systems that monitor and control wheel slip during vehicle braking. What are the components of ABS? - electronic control unit (ECU), wheel speed sensors, modulator valves, exciter rings In ABS, what is the function of the electronic control unit (ECU)? - Processes all ABS info and signal functions. Receives and interprets voltage pulses generated by the sensor pickup as the exciter teeth pass by, and uses this info to determine: (a) impending wheel lock, and (b) when/how to activate the ABS modulator valves. In ABS, what is the function of the modulator valves? - Regulate air pressure to the brakes during ABS action. ECU commands mod valve to either change the air pressure to the brake chamber, or hold the existing pressure.