Anti-lock Brake Systems advanced system T LEVEL

What is the primary function of the anti-lock brake system (ABS)?

Identify the components shown in the Anti-Lock Brake System Layout diagram.

• Brake Pedal, Master Cylinder, Wheel Speed Sensors, ABS Control Module, Hydraulic Control Unit

• Steering Wheel, Transmission, Exhaust System, Fuel Tank

• Alternator, Battery, Spark Plugs, Distributor

• Radiator, Water Pump, Thermostat, Coolant Reservoir

The ABS ECU processes information from electronic sensors to control hydraulic and electronic actuators inside the modulator.

• True

• False

The wheel speed sensor measures the speed of rotation of each wheel.

• True

• False

Fill in the blank: The tone wheel cuts the magnetic field of the ________ sensor.

• inductive

• capacitive

• optical

Which ABS device reads signals from the wheel sensors?

• The hydraulic control unit

• The ABS ECU

• The wheel speed sensor ring

• The master cylinder

How many wheel speed sensors does a typical four-channel hydraulic system have?

• 1

• 2

• 3

• 4

What does the ABS ECU control in the ABS hydraulic cycle?

• The brake fluid pressure

• The engine speed

• The air conditioning system

• The fuel injection timing

Under normal braking conditions, what happens to the inlet and outlet valves?

• The inlet valve opens and the outlet valve closes.

• The inlet valve closes and the outlet valve opens.

• Both valves remain closed.

• Both valves remain open.

If the ABS ECU detects that a wheel is starting to lock up, what action does it take?

• It increases the brake pressure.

• It decreases the brake pressure.

• It maintains the current brake pressure.

• It turns off the ABS system.