The brakes are dragging on a vehicle. This could be caused by:

• Overfilled master cylinder reservoir

• Low vacuum to the booster

• Quick take-up valve stuck open

• 1. Bypassing master cylinder

The brake pads are worn at an angle on a vehicle with a sliding brake caliper system. Which of the following is the most likely cause?

• 1. Worn caliper piston

• Worn caliper bushings

• 1. Leaking caliper seal

• Leaking caliper boot

A diagnostic trouble code is set for an open wheel speed sensor on the left front sensor. The technician measures the resistance at the sensor and finds it to be within specification. Which of the following is the most likely cause for the wheel speed sensor code?

• Faulty ABS computer

• 1. Open fuse

• 1. Open wiring from the computer to the wheel speed sensor

• Shorted left front ABS modulator valve

The brake warning lamp pictured above stays on any time the ignition switch is on. Technician A says this could be caused by apoor ground at the parking brake switch. Technician B says this could be caused by a poor ground at the brake warning lamp switch. Who is correct?

• A only

• B only

• Both A and B

• 1. Neither A nor B

Which of the following is true concerning the above caliper?

• This caliper incorporates the parking brake

• This caliper can only be used on the front

• 1. This caliper can only be used with Type 5 brake fluid

• 1. This caliper must be replaced at each brake pad replacement

Technician A says a double flare line should be replaced with an ISO flare line. Technician B says an ISO flare line should be replaced with a double flare line. Who is correct?

• 1. A only

• B only

• Both A and B

• 1. Neither A nor B

While testing the system shown above, the technician finds there is no assist from the booster after the engine is shut off. Which of the following is the most likely cause?

• A faulty back-up EH pump

• 1. A faulty accumulator

• 1. A bypassing master cylinder

• A bypassing brake booster

A customer is concerned that under heavy acceleration on dry pavement the traction control light comes on and the throttle momentarily becomes unresponsive. Which of the following is the most likely cause?

• A tire has lost traction

• The accelerator pedal position (APP) sensor is faulty

• 1. The throttle position sensor (TPS) is faulty

• A wheel speed sensor is faulty

A vehicle has a low brake pedal. Master cylinder fluid level is correct. Which of the following is the most likely cause?

• 1. Worn brake pad lining

• 1. Seized wheel cylinder

• Seized caliper piston

• 1. Brake shoes out of adjustment

  
  

 The brake caliper piston boot was cut when the caliper was reassembled. Technician A says this will cause a brake fluid leak when the caliper is reinstalled. Technician B says this could cause the piston to bind due to contamination. Who is correct?

• 1. A only

• 1. B only

• Both A and B

• Neither A nor B