BC Automotive Service Technician Certification
Exam Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of engine oil?
A. To cool the combustion chamber
B. To lubricate moving engine components
C. To increase fuel octane
D. To reduce exhaust emissions
Engine oil reduces friction and wear between moving parts,
helping prevent overheating and damage.
2. What component controls engine coolant temperature?
A. Radiator cap
B. Water pump
C. Thermostat
D. Cooling fan
The thermostat regulates coolant flow based on engine
temperature.
3. Which sensor measures oxygen content in exhaust gases?
A. MAP sensor
B. TPS sensor
C. Oxygen sensor
D. Knock sensor
The oxygen sensor provides feedback for air-fuel ratio adjustment.
,4. What does a flashing check engine light usually indicate?
A. Low fuel pressure
B. Minor emissions fault
C. Severe engine misfire
D. Battery charging issue
A flashing MIL warns of conditions that could damage the catalytic
converter.
5. What tool is used to measure cylinder compression?
A. Vacuum gauge
B. Compression gauge
C. Fuel pressure gauge
D. Leak-down tester
A compression gauge measures cylinder pressure during cranking.
6. What is the function of the catalytic converter?
A. Increase engine power
B. Reduce engine noise
C. Reduce harmful exhaust emissions
D. Improve fuel economy
It converts toxic gases into less harmful emissions.
7. Which system stores evaporated fuel vapors?
A. PCV system
B. Fuel injection system
C. EVAP system
D. EGR system
The EVAP system prevents fuel vapors from venting to
atmosphere.
, 8. What is the correct battery terminal disconnection order?
A. Positive first
B. Either terminal
C. Negative first
D. Ground last
Disconnecting the negative terminal first reduces short-circuit risk.
9. What does ABS stand for?
A. Automatic Brake System
B. Advanced Braking Solution
C. Anti-lock Braking System
D. Assisted Brake System
ABS prevents wheel lock-up during braking.
10. Which component converts mechanical energy into electrical
energy?
A. Starter motor
B. Battery
C. Alternator
D. Ignition coil
The alternator generates electrical power while the engine runs.
11. What is the purpose of a PCV valve?
A. Control fuel pressure
B. Reduce exhaust noise
C. Vent crankcase gases
D. Cool engine oil
PCV systems reduce emissions and prevent pressure buildup.
12. What causes brake fade?
A. Low brake fluid
Exam Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of engine oil?
A. To cool the combustion chamber
B. To lubricate moving engine components
C. To increase fuel octane
D. To reduce exhaust emissions
Engine oil reduces friction and wear between moving parts,
helping prevent overheating and damage.
2. What component controls engine coolant temperature?
A. Radiator cap
B. Water pump
C. Thermostat
D. Cooling fan
The thermostat regulates coolant flow based on engine
temperature.
3. Which sensor measures oxygen content in exhaust gases?
A. MAP sensor
B. TPS sensor
C. Oxygen sensor
D. Knock sensor
The oxygen sensor provides feedback for air-fuel ratio adjustment.
,4. What does a flashing check engine light usually indicate?
A. Low fuel pressure
B. Minor emissions fault
C. Severe engine misfire
D. Battery charging issue
A flashing MIL warns of conditions that could damage the catalytic
converter.
5. What tool is used to measure cylinder compression?
A. Vacuum gauge
B. Compression gauge
C. Fuel pressure gauge
D. Leak-down tester
A compression gauge measures cylinder pressure during cranking.
6. What is the function of the catalytic converter?
A. Increase engine power
B. Reduce engine noise
C. Reduce harmful exhaust emissions
D. Improve fuel economy
It converts toxic gases into less harmful emissions.
7. Which system stores evaporated fuel vapors?
A. PCV system
B. Fuel injection system
C. EVAP system
D. EGR system
The EVAP system prevents fuel vapors from venting to
atmosphere.
, 8. What is the correct battery terminal disconnection order?
A. Positive first
B. Either terminal
C. Negative first
D. Ground last
Disconnecting the negative terminal first reduces short-circuit risk.
9. What does ABS stand for?
A. Automatic Brake System
B. Advanced Braking Solution
C. Anti-lock Braking System
D. Assisted Brake System
ABS prevents wheel lock-up during braking.
10. Which component converts mechanical energy into electrical
energy?
A. Starter motor
B. Battery
C. Alternator
D. Ignition coil
The alternator generates electrical power while the engine runs.
11. What is the purpose of a PCV valve?
A. Control fuel pressure
B. Reduce exhaust noise
C. Vent crankcase gases
D. Cool engine oil
PCV systems reduce emissions and prevent pressure buildup.
12. What causes brake fade?
A. Low brake fluid
