Michigan SOS Brakes Mechanic
Certification Practice Test
Questions & Verified Answers
Contaminated brake fluid - correct answer ✔✔A possible reason for the brake pedal slowly
going to the floor under normal braking pressure.
Warped brake rotors - correct answer ✔✔A likely cause of the brake pedal slowly going to the
floor when normal braking pressure is applied.
Internal leak in the master cylinder - correct answer ✔✔A common cause for the brake pedal
going to the floor when normal braking pressure is applied.
Faulty brake booster - correct answer ✔✔A potential issue that could cause the brake pedal to
slowly go to the floor during a road test.
Vacuum power brake booster test - correct answer ✔✔To test it, disconnect the vacuum hose
and observe engine idle.
Brake pedal pumping test - correct answer ✔✔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 - correct answer ✔✔Apply the parking brake and start the engine as
part of the vacuum power brake booster test.
Vacuum check at the booster - correct answer ✔✔Check for vacuum at the booster with a
gauge to test the vacuum power brake booster.
, Depressurizing an ABS system - correct answer ✔✔The proper way includes opening the
bleeder valves.
Disconnecting the ABS fuse - correct answer ✔✔A method to depressurize an ABS system.
Pumping the brake pedal - correct answer ✔✔Pump the brake pedal at least 25 times with the
ignition off to depressurize an ABS system.
ABS self-diagnostic test - correct answer ✔✔Running this test is one way to depressurize an ABS
system.
Dragging rear brakes - correct answer ✔✔The most likely cause after new linings installed and
drums machined is a stuck parking brake cable.
Warped drums - correct answer ✔✔A possible reason for rear brakes dragging after new linings
are installed.
Improperly adjusted brake shoes - correct answer ✔✔A likely cause of rear brakes dragging
after new linings and machined drums.
Leaking wheel cylinder - correct answer ✔✔A likely cause for low brake fluid levels observed
during inspection.
Faulty master cylinder - correct answer ✔✔Another possible cause for low brake fluid levels
during inspection.
Air in the brake lines - correct answer ✔✔A potential reason for low brake fluid levels observed
by a technician.
Certification Practice Test
Questions & Verified Answers
Contaminated brake fluid - correct answer ✔✔A possible reason for the brake pedal slowly
going to the floor under normal braking pressure.
Warped brake rotors - correct answer ✔✔A likely cause of the brake pedal slowly going to the
floor when normal braking pressure is applied.
Internal leak in the master cylinder - correct answer ✔✔A common cause for the brake pedal
going to the floor when normal braking pressure is applied.
Faulty brake booster - correct answer ✔✔A potential issue that could cause the brake pedal to
slowly go to the floor during a road test.
Vacuum power brake booster test - correct answer ✔✔To test it, disconnect the vacuum hose
and observe engine idle.
Brake pedal pumping test - correct answer ✔✔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 - correct answer ✔✔Apply the parking brake and start the engine as
part of the vacuum power brake booster test.
Vacuum check at the booster - correct answer ✔✔Check for vacuum at the booster with a
gauge to test the vacuum power brake booster.
, Depressurizing an ABS system - correct answer ✔✔The proper way includes opening the
bleeder valves.
Disconnecting the ABS fuse - correct answer ✔✔A method to depressurize an ABS system.
Pumping the brake pedal - correct answer ✔✔Pump the brake pedal at least 25 times with the
ignition off to depressurize an ABS system.
ABS self-diagnostic test - correct answer ✔✔Running this test is one way to depressurize an ABS
system.
Dragging rear brakes - correct answer ✔✔The most likely cause after new linings installed and
drums machined is a stuck parking brake cable.
Warped drums - correct answer ✔✔A possible reason for rear brakes dragging after new linings
are installed.
Improperly adjusted brake shoes - correct answer ✔✔A likely cause of rear brakes dragging
after new linings and machined drums.
Leaking wheel cylinder - correct answer ✔✔A likely cause for low brake fluid levels observed
during inspection.
Faulty master cylinder - correct answer ✔✔Another possible cause for low brake fluid levels
during inspection.
Air in the brake lines - correct answer ✔✔A potential reason for low brake fluid levels observed
by a technician.
