MICHIGAN SOS BRAKES MECHANIC CERTIFICATION
PRACTICE TEST
Warped brake rotors - Answers - A likely cause of the brake pedal slowly going to the
floor when normal braking pressure is applied.
Contaminated brake fluid - Answers - A possible reason for the brake pedal slowly
going to the floor under normal braking pressure.
Internal leak in the master cylinder - Answers - A common cause for the brake pedal
going to the floor when normal braking pressure is applied.
Faulty brake booster - Answers - A potential issue that could cause the brake pedal to
slowly go to the floor during a road test.
Vacuum power brake booster test - Answers - To test it, disconnect the vacuum hose
and observe engine idle.
Brake pedal pumping test - Answers - Pump the brake pedal at least 4 times, hold the
brake pedal depressed, and start the engine to test the vacuum power brake booster.
Parking brake application - Answers - Apply the parking brake and start the engine as
part of the vacuum power brake booster test.
Vacuum check at the booster - Answers - Check for vacuum at the booster with a gauge
to test the vacuum power brake booster.
Depressurizing an ABS system - Answers - The proper way includes opening the
bleeder valves.
Disconnecting the ABS fuse - Answers - A method to depressurize an ABS system.
Pumping the brake pedal - Answers - Pump the brake pedal at least 25 times with the
ignition off to depressurize an ABS system.
ABS self-diagnostic test - Answers - Running this test is one way to depressurize an
ABS system.
Dragging rear brakes - Answers - The most likely cause after new linings installed and
drums machined is a stuck parking brake cable.
Warped drums - Answers - A possible reason for rear brakes dragging after new linings
are installed.
PRACTICE TEST
Warped brake rotors - Answers - A likely cause of the brake pedal slowly going to the
floor when normal braking pressure is applied.
Contaminated brake fluid - Answers - A possible reason for the brake pedal slowly
going to the floor under normal braking pressure.
Internal leak in the master cylinder - Answers - A common cause for the brake pedal
going to the floor when normal braking pressure is applied.
Faulty brake booster - Answers - A potential issue that could cause the brake pedal to
slowly go to the floor during a road test.
Vacuum power brake booster test - Answers - To test it, disconnect the vacuum hose
and observe engine idle.
Brake pedal pumping test - Answers - Pump the brake pedal at least 4 times, hold the
brake pedal depressed, and start the engine to test the vacuum power brake booster.
Parking brake application - Answers - Apply the parking brake and start the engine as
part of the vacuum power brake booster test.
Vacuum check at the booster - Answers - Check for vacuum at the booster with a gauge
to test the vacuum power brake booster.
Depressurizing an ABS system - Answers - The proper way includes opening the
bleeder valves.
Disconnecting the ABS fuse - Answers - A method to depressurize an ABS system.
Pumping the brake pedal - Answers - Pump the brake pedal at least 25 times with the
ignition off to depressurize an ABS system.
ABS self-diagnostic test - Answers - Running this test is one way to depressurize an
ABS system.
Dragging rear brakes - Answers - The most likely cause after new linings installed and
drums machined is a stuck parking brake cable.
Warped drums - Answers - A possible reason for rear brakes dragging after new linings
are installed.
