Chapter 90
What is the recommended location to store a HEV ignition key during service?
Lock box
Servicing the base brakes on a hybrid vehicle requires the technician to ________.
Replace the pads when needed, just as on any other vehicle
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 B only
Technician A says that the 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?
Technician B only
Which statement regarding high-voltage circuitry in HEVs is NOT correct?
The HV system is not energized when the ICE is in idle stop mode and the electrical A/C compressor is running
The hybrid vehicle control system can detect a high-voltage leakage to ground by use of ________.
A ground fault monitor system
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?
Neither technician A nor B
How long can power be retained in the high-voltage system once it has been disabled?
None of these
If the engine is not running, Technician A says that the high-voltage circuits are de-powered. Technician B says that all high-voltage wiring is orange-colored. Which technician is correct?
Tech B
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?
Technician A only
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?
Technician B only
A CAT-III certified DMM should be used whenever measuring high-voltage circuits or components. The CAT-III rating relates to ___. Question options: A) high voltage B)high energy C)high electrical resistance D)both A and B
both A and B
What routine service procedure could result in lower fuel economy, which the owner may notice? A) using the wrong viscosity oil B) replacing tires C) replacing the air filter D) both A and B
both A and B
how should nickel metal hydride batteries be disposed? A) in regular trash B) call an 800 number shown under the hood of the vehicle for info C) submerged in water and then disposed of in regular trash D) burned at an EPA certified plant
call 800 number shown under the hood
what can occur if a hybrid electric vehicle is pushed in the shop? A) the HV battery pack can be damaged B) the tires will be locked unless the ignition is ON C) damage to the electronic controller can occur D) high voltage will be generated by the motor generator
high voltage will be generated by the motor generator
Which statement is false about high-voltage wiring? Question options: A) Connects the battery pack to the electric controller B)Connects the controller to the motor/generator C)Is electrically grounded to the frame (body) of the vehicle D)Is controlled by a relay that opens if the ignition is OFF
is electrically grounded to the frame of the vehicle
all of the following will shut off the high voltage to components and circuits except____? A) opening the drivers door B) turning the ignition OFF C) disconnecting the 12V auxiliary battery D) removing the main fuse, relay, or HV plug
opening the driver's door
Some hybrid air conditioning systems use an electrically driven compressor that uses a special lubricant. What precaution should be taken when servicing these systems?
A dedicated recycling machine for the HEV
nickel-metal hydride batteries can be damaged if exposed to temperatures higher than about____? A) 150 degrees B) 175 degrees C) 200 degrees D) 225 degrees
150 degrees
The high voltage cables ________.
Both A and B
What is TRUE regarding protective gloves worn during HV system service?
Both A and B Leather gloves are worn over the rubber gloves to protect the rubber from damage, Rubber gloves should be checked for leaks before each use.
Rubber gloves should be worn whenever working on or near the high-voltage circuits or components of a hybrid-electric vehicle. Technician A says that the rubber gloves should be rated at 1,000 volts or higher. Technician B says that leather gloves should be worn over the high-voltage rubber gloves. Which technician is correct?
Both tech A and B
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?
Both technicians A and B
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?
Both technicians A and B
Two technicians are discussing jump starting a hybrid electric vehicle. Technician A says that the high-voltage batteries can be jumped on some HEV models. Technician B says that the 12-volt auxillary battery can be jumped using a conventional jump box or jumper cable. Which technician is correct?
Both technicians A and B
Which of the following systems will require disabling the high-voltage (HV) system during service?
Electric AC compressor replacement
How often should linesman's gloves be inspected by a qualified testing lab?
Every six months
A hybrid vehicle 12-volt battery is located under the hood. This will usually be a ________ type battery.
Flooded
On a HEV that uses a "START" push button, what precaution should be taken when de-powering the vehicle?
Make sure the key fob is at least 15 feet away from the vehicle
