SOS MECHANIC CERTIFICATION BUNDLE
COMPREHENSIVE EXAM SCRIPT 2026
QUESTIONS WITH SOLUTIONS
◉ The rear brakes are dragging after having new linings installed
and the drums machined. the most likely cause is the: Answer:
technician use the parking brake to adjust shoes and the cable is
stuck
◉ When turning brake drums: Answer: use a dampening strap to
reduce chatter
◉ Which of the following is NOT a necessary drum brake
measurement? Answer: run-out
◉ On a 3-channel system, which wheels are on the same circuit?
Answer: both rear wheels
◉ One way to test an ABS wheel speed signal is to use _____ on your
digital multimeter. Answer: AC volts
◉ The key input for the ABS control module comes from the:
Answer: wheel speed sensors
, ◉ ABS speed sensor and sensor rings: Answer: should not be
hammered or tapped on and should always be replaced as a
matched set
◉ Flexible brake hoses should be replaced: Answer: when dampness
is evident on the hose
◉ Which of the following should be used to check for rotor thickness
variation: Answer: Micrometer
◉ After rebuilding a master cylinder, the rod between the master
cylinder and booster should be: Answer: adjusted properly
◉ Upon inspecting brake fluid condition, the technician observes the
diaphragm in the master cylinder cup is swollen. Which of the
following is the most likely cause? Answer: silicone fluid added to
the system
◉ When inspecting brake fluid levels, a technician observes low fluid
levels. which of the following should be done first? Answer: Inspect
disc brake pads for excessive wear
COMPREHENSIVE EXAM SCRIPT 2026
QUESTIONS WITH SOLUTIONS
◉ The rear brakes are dragging after having new linings installed
and the drums machined. the most likely cause is the: Answer:
technician use the parking brake to adjust shoes and the cable is
stuck
◉ When turning brake drums: Answer: use a dampening strap to
reduce chatter
◉ Which of the following is NOT a necessary drum brake
measurement? Answer: run-out
◉ On a 3-channel system, which wheels are on the same circuit?
Answer: both rear wheels
◉ One way to test an ABS wheel speed signal is to use _____ on your
digital multimeter. Answer: AC volts
◉ The key input for the ABS control module comes from the:
Answer: wheel speed sensors
, ◉ ABS speed sensor and sensor rings: Answer: should not be
hammered or tapped on and should always be replaced as a
matched set
◉ Flexible brake hoses should be replaced: Answer: when dampness
is evident on the hose
◉ Which of the following should be used to check for rotor thickness
variation: Answer: Micrometer
◉ After rebuilding a master cylinder, the rod between the master
cylinder and booster should be: Answer: adjusted properly
◉ Upon inspecting brake fluid condition, the technician observes the
diaphragm in the master cylinder cup is swollen. Which of the
following is the most likely cause? Answer: silicone fluid added to
the system
◉ When inspecting brake fluid levels, a technician observes low fluid
levels. which of the following should be done first? Answer: Inspect
disc brake pads for excessive wear
