Take SKM Motor Vehicle Mechanic Level 3 Practice Questions - SKM Motor Vehicle Mechanic Level 3 (Malaysia) Exam

QUESTION 1 / 25

What is the primary administrative purpose of a Job Card (Work Order) in an automotive workshop?

Choose one answer below.

ATo serve as a marketing flyer for vehicle service packages✓BTo record customer complaints, authorize repairs, track technician labor, and detail parts used✓CTo outline the factory-recommended maintenance schedule of the vehicle manufacturer✓DTo register the workshop's business license with the local municipal council✓

QUESTION 2 / 25

Why must tool calibration records be meticulously maintained in a JPK-accredited workshop?

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ATo allow technicians to lease tools to third-party workshops for extra revenue✓BTo satisfy tax audits regarding the depreciation of shop tools and assets✓CTo ensure precision measurements (e.g. torque, pressure) comply with quality assurance and safety standards✓DTo qualify for manufacturer-sponsored tool upgrade discounts✓

QUESTION 3 / 25

What is the immediate first action a technician should take in the event of an oil spill in the workshop bay?

Choose one answer below.

AIgnore the spill until the current repair job is fully completed✓BSpray the oil spill with high-pressure water directly into the floor drainage system✓CApply absorbent granules, sawdust, or spill pads to contain and soak up the oil✓DDraft an incident report to submit to the Department of Occupational Safety and Health (DOSH) immediately✓

QUESTION 4 / 25

How is a technician's efficiency rate calculated in automotive workshop supervision?

Choose one answer below.

ABy dividing the technician's clocked hours by their monthly salary✓BBy dividing the flat-rate (standard) hours earned by the actual time taken to complete the jobs✓CBy counting the total number of parts replaced during a single shift✓DBy dividing the customer service score by the technician's total years of experience✓

QUESTION 5 / 25

Under the 5S methodology applied in SKM workshops, which phase focuses on cleaning the work area, tools, and machinery?

Choose one answer below.

ASeiri (Sort / Sisih)✓BSeiton (Set in order / Susun)✓CSeiso (Shine / Sapu)✓DSeiketsu (Standardize / Seragam)✓

QUESTION 6 / 25

Which performance metric is most critical for evaluating a technician's troubleshooting accuracy and reducing comebacks?

Choose one answer below.

ATotal overtime hours logged per month✓BFirst-Time-Right (FTR) repair rate✓CThe average cost of parts sold per job card✓DTotal number of customer complaints resolved via refunds✓

QUESTION 7 / 25

In a JPK-accredited training workshop, what is the supervisor's primary role regarding Written Instructional Materials (WIM)?

Choose one answer below.

ATo sell WIM manuals to external trainees for personal profit✓BTo ensure that WIM modules align with NOSS competency units and are used to guide practical training sessions✓CTo replace WIM guidelines with proprietary training material from a single vehicle manufacturer✓DTo submit WIM files directly to local newspapers for PR exposure✓

QUESTION 8 / 25

Under the Malaysia Occupational Safety and Health Act (OSHA), who holds the legal responsibility for ensuring PPE is utilized?

Choose one answer below.

AOnly the customer who owns the vehicle being repaired✓BOnly the safety officer of the local municipal council✓CBoth the employer (who must provide and enforce PPE) and the employee (who must wear and maintain it)✓DOnly the tool manufacturer who designed the safety goggles and steel-toe boots✓

QUESTION 9 / 25

A workshop logs 800 billable hours in a month, while the technicians' total clocked hours in the shop equal 1,000 hours. What is the labor utilization rate, and what does it indicate?

Choose one answer below.

A80% labor utilization; indicating significant idle time, slow workflow routing, or inefficient technician scheduling✓B125% labor utilization; indicating a high level of technician fatigue and immediate need for hiring✓C20% labor utilization; indicating that the workshop is operating at a major financial profit margin✓D50% labor utilization; indicating that half of the technicians did not report to work✓

QUESTION 10 / 25

A customer disputes their invoice because a technician replaced a cabin air filter without authorization. What is the supervisor's correct response?

Choose one answer below.

AThreaten to seize the customer's vehicle until the entire bill is settled immediately✓BAcknowledge the mistake, adjust the invoice to remove the unauthorized charge, and reinforce authorization protocols with staff✓CInform the customer that workshop policies override standard consumer protection laws in Malaysia✓DRemove the new cabin filter and reinstall a damaged, dirty filter from another scrap vehicle✓

QUESTION 11 / 25

What is the primary function of the Engine Control Unit (ECU) in a modern Engine Management System?

Choose one answer below.

ATo mechanically regulate the passenger cabin heating and air conditioning valves✓BTo process input data from sensors and adjust actuators (fuel injectors, spark timing) to optimize combustion✓CTo step up battery voltage directly to the starter motor during cold engine cranks✓DTo control the planetary gear ratios in manual transmission vehicles✓

QUESTION 12 / 25

Which sensor provides the ECU with the critical cylinder position data needed to sync fuel injection and spark timing?

Choose one answer below.

AEngine Coolant Temperature (ECT) sensor✓BCrankshaft Position (CKP) sensor✓CManifold Absolute Pressure (MAP) sensor✓DOxygen (O2) sensor✓

QUESTION 13 / 25

What does a stored DTC starting with the letter 'P' (e.g. P0300) indicate in OBD-II diagnostic standards?

Choose one answer below.

AA chassis fault relating to suspension or electronic steering components✓BA powertrain fault relating to the engine, transmission, or emissions control system✓CA network communication fault relating to the CAN-bus wiring system✓DA body control fault relating to lighting or passenger door lock actuators✓

QUESTION 14 / 25

What is the function of the oxygen sensor (O2 sensor) located upstream of the catalytic converter?

Choose one answer below.

ATo supply pure oxygen gas directly to the intake manifold to increase engine horsepower✓BTo measure the amount of unburned oxygen in the exhaust gases so the ECU can adjust the air-fuel mixture✓CTo heat up the exhaust gas to burn off soot before it exits the tailpipe✓DTo measure the oil level inside the engine crankcase✓

QUESTION 15 / 25

A diagnostic scanner shows a high-voltage reading from an Engine Coolant Temperature (ECT) sensor. What is the most likely circuit fault?

Choose one answer below.

AThe ECT sensor signal wire is shorted to the engine ground✓BThe ECT sensor circuit has an open circuit (break in wire or disconnected connector)✓CThe ECT sensor is overheating due to a stuck-open coolant thermostat✓DThe sensor reference voltage has dropped to zero volts✓

QUESTION 16 / 25

How does a Manifold Absolute Pressure (MAP) sensor calculate the air density inside the engine intake tract?

Choose one answer below.

ABy measuring the physical temperature of the intake manifold mounting bolts✓BBy outputting a variable electrical signal based on the absolute pressure inside the intake manifold relative to a vacuum reference✓CBy counting the intake valve opening and closing cycles per minute✓DBy measuring the chemical composition of the air-fuel mixture before it enters the combustion chamber✓

QUESTION 17 / 25

Which actuator is directly controlled by the ECU using a pulse-width modulated (PWM) duty cycle to maintain engine idle speed?

Choose one answer below.

AManual clutch slave cylinder✓BIdle Air Control (IAC) valve or electronic throttle body motor✓CEngine oil pump pressure relief valve✓DMechanical fuel pressure regulator diaphragm✓

QUESTION 18 / 25

What is the primary indicator of a faulty Mass Air Flow (MAF) sensor during an engine diagnostic check?

Choose one answer below.

AA constant high-voltage oil pressure sensor signal output✓BErratic or static MAF sensor Grams per Second (g/s) readings on a scanner that do not increase when engine RPM rises✓CA mechanical squealing noise coming from the water pump belt drive pulley✓DThe transmission shifting sluggishly when descending steep road grades✓

QUESTION 19 / 25

How does the ECU detect a misfiring cylinder using input from the Crankshaft Position (CKP) sensor?

Choose one answer below.

ABy measuring the increase in alternator output voltage during a cylinder firing stroke✓BBy detecting a temporary drop in crankshaft rotational speed (deceleration) during that cylinder's power stroke✓CBy measuring the temperature of the exhaust manifold runner using a thermocouple✓DBy checking if the ignition switch remains closed during the combustion cycle✓

QUESTION 20 / 25

What is the difference between Short Term Fuel Trim (STFT) and Long Term Fuel Trim (LTFT)?

Choose one answer below.

ASTFT is adjusted by transmission slip solenoids, while LTFT is controlled by the catalytic converter bypass valve✓BSTFT represents immediate fuel mixture adjustments based on oxygen sensor inputs, while LTFT is a learned compensation value stored over time✓CSTFT is active only during wide-open throttle, while LTFT operates only when the engine is idling✓DSTFT measures the fuel volume inside the tank, while LTFT calculates fuel injection rail pressure✓

QUESTION 21 / 25

A diagnostic check reveals an engine is running lean with high positive LTFT values at idle, but the values return to normal at higher engine speeds. What is the most likely cause?

Choose one answer below.

AA restricted exhaust catalytic converter restriction✓BAn intake manifold vacuum leak downstream of the throttle body✓CA fuel pressure regulator stuck at maximum system pressure✓DA failed engine cooling fan relay circuit✓

QUESTION 22 / 25

When monitoring a zirconia oxygen sensor on an oscilloscope under closed-loop operation at 2000 RPM, what indicates a healthy sensor?

Choose one answer below.

AA constant, flat-line output voltage fixed at exactly 0.50 volts✓BA voltage waveform oscillating rapidly between 0.1 volts and 0.9 volts, completing several cycles per second✓CA high-frequency square wave switching between 0 volts and 12 volts✓DA voltage reading that steadily climbs from 1.0 volt to 5.0 volts as the engine warms up✓

QUESTION 23 / 25

An engine displays a DTC for Camshaft-Crankshaft Correlation (e.g. P0016). What is the first diagnostic step after verifying sensor operations?

Choose one answer below.

ADrain the engine coolant and replace the vehicle water pump assembly✓BInspect the physical engine timing belt or chain alignment and tensioner operation✓CReplace the automatic transmission valve body and shift solenoids✓DRemove the intake manifold and clean the carbon buildup on the valves✓

QUESTION 24 / 25

Under what condition does an ECU transition from Open-Loop to Closed-Loop engine fueling control?

Choose one answer below.

AImmediately during cold engine starting when the starter motor is engaged✓BWhen the coolant sensor reaches operating temperature, the oxygen sensors are heated, and a set delay time expires✓COnly when the vehicle speed exceeds 110 km/h on highway road stretches✓DWhenever the automatic transmission shifts into reverse gear✓

QUESTION 25 / 25

A vehicle has a hard-start condition. A fuel pressure gauge shows that system pressure drops to zero immediately after the engine is turned off. What is the most likely cause?

Choose one answer below.

AA completely restricted fuel filter element✓BA leaking fuel injector or a failed check valve inside the in-tank fuel pump assembly✓CA malfunctioning fuel tank vapor pressure sensor✓DThe fuel pump relay contacts are stuck closed✓