Exam 90: Hybrid Safety and Service Procedures

How often should linesman's gloves be inspected by a qualified testing lab?

Technician A says that a completely assembled electric motor is not likely to produce injury by electrical shock. Technician B says that turning off the ignition on an HEV causes the system main relay to disable the high voltage system. Which technician is correct?

Which of the following systems will require disabling the high voltage (HV) system during service?

The high voltage cables ________.

How long can power be retained in the high voltage system once it has been disabled?

The hybrid vehicle control system can detect a high voltage leakage to ground by use of ________.

Servicing the base brakes on a hybrid vehicle requires the technician to ________.

What is the recommended location to store a HEV ignition key during service?

Technician A says that DMMs are assigned CAT ratings based on voltage capacity alone. Technician B says that DMMs are rated according to their ability to handle potential electrical energy. Which technician is correct?

What is TRUE regarding protective gloves worn during HV system service?

Technician A says that CAT I meter leads may be used to test HV system components as long as the DMM itself is rated CAT III. Technician B says that CAT IV test leads are clamp-on inductive type leads. Which technician is correct?

Technician A says that when a hybrid electric vehicle must remain in the shop for over a month, the battery should be charged by running the vehicle if possible. Technician B says that if the battery unit must be removed, it should be handled with PPE and always tested for voltage and treated with care. Which technician is correct?

All of the following will shut off the high voltage to components and circuits EXCEPT ________.

Some hybrid air conditioning systems use an electrically driven compressor that uses a special lubricant. What precaution should be taken when servicing these systems?

Technician A says that all components in the high voltage battery box are completely insulated from the rest of the vehicle for safety. Technician B says that the high voltage battery box is located under the hood in some vehicles. Which technician is correct?

On a HEV that uses a "START" push button, what precaution should be taken when de-powering the vehicle?

A hybrid vehicle 12 volt battery is located under the hood. This will usually be a ________ type battery.

Technician A says that the that HV battery is grounded to the vehicle chassis. Technician B says that the HV battery and cables are completely insulated and isolated from the rest of the vehicle. Which technician is correct?

How should NiMH batteries be disposed of?

Technician A says that the high voltage cables may be repaired if damaged while lifting on a vehicle hoist. Technician B says that a paint oven does not get hot enough to damage high voltage cables or other hybrid components. Which technician is correct?