Practice Test Geeks(CAR) Certified Automotive Recycler Practice Test
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Electric & Hybrid Vehicle Processing Flashcards

7 cards from real CAR practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Electric & Hybrid Vehicle Processing flashcards as text

  1. A CAR-certified recycler receives a Chevrolet Volt with an unknown crash history. The high-voltage interlock loop (HVIL) circuit indicates an open fault. What does this mean operationally?

    Answer: A cover or connector in the HV circuit is missing or improperly seated, keeping contactors open

    The HVIL is a daisy-chained low-voltage circuit through every HV cover and connector; an open indicates a physical break—missing cover, unplugged connector—not necessarily a battery fault.

  2. Under OSHA 29 CFR 1910.147 (Lockout/Tagout), which step is unique when applying LOTO to an EV compared to a conventional vehicle?

    Answer: Disabling and locking out the high-voltage service disconnect in addition to the 12V battery

    EVs have a second energy source—the high-voltage traction battery—requiring its service disconnect to be removed, locked, and tagged in addition to standard 12V isolation.

  3. Which cooling system fluid, used in some EV battery thermal management systems, is electrically non-conductive and requires special handling protocols different from standard ethylene glycol coolant?

    Answer: Dielectric (non-aqueous) heat transfer fluid

    Some OEMs use non-conductive dielectric fluids for direct cell cooling; these require separate disposal streams and must not be mixed with conventional coolant.

  4. When a recycler sells a salvage EV battery to a buyer for reuse, which document is recommended to accompany the transaction to ensure the buyer understands remaining capacity and history?

    Answer: A battery health report including SOH, cycle count, and known damage history

    Best practice and emerging state regulations require a battery health report so buyers can make informed decisions about reuse suitability and safety.

  5. An EV motor's three-phase AC output is converted to DC to charge the traction battery during regenerative braking by which onboard component?

    Answer: The inverter/motor controller operating in regeneration mode

    The same inverter that converts DC battery power to AC to drive the motor reverses its operation during braking, converting AC from the motor to DC for battery charging.

  6. A recycler is processing a Nissan LEAF with a 24 kWh battery. Assuming 400 V pack voltage, what is the approximate maximum stored energy in kilowatt-hours that represents the hazard level?

    Answer: 24 kWh

    The nameplate 24 kWh rating represents the total energy stored in the pack, which is the hazard energy workers must account for during safe handling procedures.

  7. Which personal protective equipment (PPE) is specifically required when handling high-voltage EV components, beyond standard shop safety gear?

    Answer: Class 0 or Class 00 insulating rubber gloves rated 1,000 V with leather protectors

    ASTM D120 Class 0 (1,000 V AC proof test) or Class 00 rubber insulating gloves with leather over-protectors are the minimum required for EV high-voltage work.