ASE Light Duty Hybrid/Electric Vehicle 2

Question 1

Before disconnecting a high-voltage battery, what is the FIRST safety step a technician should take?

Accepted Answer

Remove the high-voltage service disconnect/manual service disconnect (MSD)

Answer

Drain the coolant

Answer

Disconnect the 12V auxiliary battery only

Answer

Spray the terminals with dielectric grease

Question 2

What color are high-voltage cables typically marked on a hybrid or electric vehicle?

Accepted Answer

Orange

Answer

Green

Answer

Blue

Answer

Yellow

Question 3

Which type of personal protective equipment is essential when handling exposed high-voltage components?

Accepted Answer

Class 0 insulated lineman's gloves

Answer

Standard leather work gloves

Answer

Cotton gloves

Answer

Latex examination gloves

Question 4

After de-energizing a high-voltage system, how long should a technician typically wait before touching components?

Accepted Answer

At least 5–10 minutes for capacitors to discharge

Answer

Immediately, no wait is required

Answer

24 hours

Answer

30 seconds

Question 5

Which instrument should be used to verify that a high-voltage circuit is de-energized?

Accepted Answer

A CAT III rated digital multimeter

Answer

A 12V test light

Answer

An analog dwell meter

Answer

A non-contact voltage pen only

Question 6

What does an illuminated 'READY' indicator on a hybrid dashboard signify?

Accepted Answer

The vehicle can move even though the engine may be silent

Answer

The engine has stalled

Answer

The 12V battery is dead

Answer

The car is in park lock

Question 7

What is the purpose of the orange safety loop/interlock circuit on the high-voltage harness?

Accepted Answer

To automatically de-energize the HV system if a connector is opened

Answer

To boost charging speed

Answer

To regulate cabin temperature

Answer

To dim the headlights