Applied Methods and Techniques Flashcards

After the high-voltage system on a VW EV is de-energized, what must a qualified technician do before working on HV components?

Answer: Verify absence of voltage with a properly rated meter

Zero voltage must be confirmed with a CAT-rated meter, because capacitors or faults can leave HV components live.

How should a click-type torque wrench be stored to keep it accurate?

Answer: Set at the lowest scale setting

Backing the wrench off to its lowest setting relieves spring tension and preserves calibration.

An aluminum cylinder head has a stripped spark plug thread. What is the accepted repair method?

Answer: Install a threaded insert repair

A threaded insert restores full-strength threads in aluminum without replacing the head.

What is the correct method for tightening wheel bolts on a VW?

Answer: Torque wrench to specification in a diagonal (star) pattern

A diagonal pattern with a calibrated torque wrench seats the wheel evenly and prevents rotor distortion.

What is the preferred way to take voltage readings at a VW harness connector?

Answer: Use the proper terminal test adapters or back-probe carefully

Proper test adapters avoid spreading terminals or piercing insulation, which can cause corrosion and intermittent faults.

Many late-model VWs use R-1234yf refrigerant. What is required during A/C service?

Answer: Recovery/recharge equipment certified for R-1234yf

R-1234yf requires dedicated SAE-certified equipment and must never be mixed with or vented like other refrigerants.

After a four-wheel alignment on a VW with electronic stability control, what additional step is commonly required?

Answer: Perform steering angle sensor basic setting/calibration

The steering angle sensor must be zeroed to the new straight-ahead position so stability control and steering assist work correctly.