Front

What causes excessive pulsating of the brake pedal when brakes are applied?

Back

Excessive brake disc run-out, drums out of round, loose brake drum, or loose wheel bearing.

Front

How to diagnose a constantly illuminated Electronic Power Assisted Steering warning light?

Back

Confirm that the light is on and connect a fault code reader.

Front

What happens to the voltage and frequency from an inductive ABS wheel sensor as wheel speed increases?

Back

Voltage and frequency increase with wheel speed until approximately 10kph, then voltage becomes constant (0.25V) and frequency changes with speed.

Front

What component senses the driver's turning effort in a vehicle fitted with an EPAS system?

Back

Torque sensor.

Front

What are the two methods a traction control system uses to reduce engine torque in a wheel slip situation?

Back

1. Throttle actuator pushes back the throttle linkage to reduce wheel spin by limiting engine torque. 2. The ECU applies the brakes (ON-OFF) to limit wheel spin.

Front

What is brake disc run-out?

Back

The variation in the thickness of the brake disc that can cause pulsation in the brake pedal.

Front

What is the function of a torque sensor in an EPAS system?

Back

To measure the driver's steering effort and provide feedback to the system for assistance.

Front

What does the Electronic Power Assisted Steering (EPAS) system do?

Back

It provides steering assistance to the driver, improving ease of steering and vehicle control.

Front

What is the role of the ECU in a traction control system?

Back

To limit the amount of fuel delivered via injectors and apply brakes to control wheel spin.

Front

What is an inductive ABS wheel sensor?

Back

A sensor that generates a voltage signal based on the rotation of the wheel, used for anti-lock braking systems.