Question 1

Where is the ambient temperature sensor usually mounted?

Accepted Answer

A)  At the intake cowl
B)  In front of the radiator
C)  In the climate control plenum
D)  None of these is correctE) B) and D)
F) A) and D)

Question 2

Which component is used as a feedback circuit?

Accepted Answer

A)  Potentiometer
B)  Ambient air temperature sensor
C)  Sun load sensor
D)  In-car temperature sensorE) All of the above
F) C) and D)

Question 3

In heating mode, where is the airflow directed?

Accepted Answer

A)  Dash vents
B)  Floor
C)  Windshield
D)  Both B and CE) A) and B)
F) None of the above

Question 4

The blower motor resistors are used to limit ________ to the motor

Accepted Answer

A)  Current
B)  Voltage
C)  Airflow
D)  Both A and BE) None of the above
F) A) and C)

Question 5

Some cabin filters contain ________ to absorb odors

Accepted Answer

A)  Synthetic fibers
B)  Paper filter material
C)  Activated charcoal
D)  PerfumeE) A) and C)
F) All of the above

Question 6

Which of these ATC output devices provides a feedback signal to the electronic control module (ECM) ?

Accepted Answer

A)  Air inlet door vacuum motor
B)  Blower motor control
C)  Blend door actuator
D)  Mode air door motorE) None of the above
F) B) and C)

Question 7

An actuator can be capable of how many positions?

Accepted Answer

A)  Variable
B)  Three
C)  Two
D)  All of theseE) A) and D)
F) A) and C)

Question 8

in a dual-zone climate control system, the ducts and airflow are split and two ________ are used to control the temperature

Accepted Answer

A)  Air mix doors
B)  Compressors
C)  Heater cores
D)  EvaporatorsE) A) and B)
F) A) and D)

Question 9

What components in the AC system may be different on a hybrid electric vehicle?

Accepted Answer

A)  Evaporator
B)  Condenser
C)  Compressor
D)  Blower motorE) B) and D)
F) C) and D)

Question 10

Which of the following is TRUE regarding the cabin air filter?

Accepted Answer

A)  Filter restrictions can reduce the volume of air entering the passenger compartment
B)  It is mounted in the incoming air stream from the cowl intake
C)  Both A and B are correct
D)  Neither A nor B is correctE) B) and D)
F) C) and D)

Question 11

Technician A says that the HVAC doors in an automatic system may be vacuum operated. Technician B says that the HVAC doors in an automatic system may be operated by electric servos. Which technician is correct?

Accepted Answer

A)  Technician A only
B)  Technician B only
C)  Both technicians A and B
D)  Neither technician A nor BE) None of the above
F) B) and D)

Question 12

An ATC system has the ability to automatically ________.

Accepted Answer

A)  Adjust the blower speed
B)  Change the function door setting
C)  Move the temperature-blend door
D)  All of theseE) A) and B)
F) A) and C)

Question 13

What is the most common type of sunload sensor?

Accepted Answer

A)  PTC thermistor
B)  Potentiometer
C)  Photo diode
D)  NTC thermistorE) C) and D)
F) A) and B) C

Question 14

Which is NOT part of a rear air conditioning system?

Accepted Answer

A)  Rear heater core
B)  Rear blower motor
C)  Rear evaporator
D)  Rear AC compressorE) B) and D)
F) None of the above D

Question 15

Which of the following is NOT a component of an automatic temperature control system?

Accepted Answer

A)  Temperature sensors
B)  Control head
C)  Electrically or vacuum operated actuators
D)  All of these are components of a semi-automatic temperature control systemE) C) and D)
F) A) and B)

Question 16

Which sensor is also called the ambient air temperature sensor?

Accepted Answer

A)  Discharge air temperature
B)  Inside vehicle temperature
C)  Outside air temperature
D)  Evaporator outlet temperatureE) B) and D)
F) A) and D)

Question 17

Technician A says that some cabin filters are accessible behind the glove compartment. Technician B says that some cabin filters are accessible from under the hood. Which technician is correct?

Accepted Answer

A)  Both technicians A and B
B)  Neither technician A nor B
C)  Technician A only
D)  Technician B onlyE) None of the above
F) B) and D) A

Question 18

Which of the following is NOT a sensor in an ATC system?

Accepted Answer

A)  Humidity sensor
B)  Sun load sensor
C)  In-car temperature sensor
D)  Ambient air temperature sensorE) A) and B)
F) A) and C)

Question 19

Which of these is an example of a three-position actuator?

Accepted Answer

A)  Blend door
B)  Bi-level air door
C)  Recirculation door
D)  None of these is correctE) A) and B)
F) A) and C)

Question 20

The purpose of the afterblow system is to dry the evaporator to help prevent the formation of ________ in the evaporator case.

Accepted Answer

A)  Mold and mildew
B)  Insect nests
C)  Rust
D)  Rotted leavesE) C) and D)
F) A) and B)

Exam 63: Automatic Air-Conditioning System Operation

Where is the ambient temperature sensor usually mounted?

Correct AnswerverifiedShow Answer

Which component is used as a feedback circuit?

Correct AnswerverifiedShow Answer

In heating mode, where is the airflow directed?

Correct AnswerverifiedShow Answer

The blower motor resistors are used to limit ________ to the motor

Correct AnswerverifiedShow Answer

Some cabin filters contain ________ to absorb odors

Correct AnswerverifiedShow Answer

Which of these ATC output devices provides a feedback signal to the electronic control module (ECM) ?

Correct AnswerverifiedShow Answer

An actuator can be capable of how many positions?

Correct AnswerverifiedShow Answer

in a dual-zone climate control system, the ducts and airflow are split and two ________ are used to control the temperature

Correct AnswerverifiedShow Answer

What components in the AC system may be different on a hybrid electric vehicle?

Correct AnswerverifiedShow Answer

Which of the following is TRUE regarding the cabin air filter?

Correct AnswerverifiedShow Answer

Technician A says that the HVAC doors in an automatic system may be vacuum operated. Technician B says that the HVAC doors in an automatic system may be operated by electric servos. Which technician is correct?

Correct AnswerverifiedShow Answer

An ATC system has the ability to automatically ________.

Correct AnswerverifiedShow Answer

What is the most common type of sunload sensor?

Correct AnswerverifiedC

Which is NOT part of a rear air conditioning system?

Correct AnswerverifiedD

Which of the following is NOT a component of an automatic temperature control system?

Correct AnswerverifiedShow Answer

Which sensor is also called the ambient air temperature sensor?

Correct AnswerverifiedShow Answer

Technician A says that some cabin filters are accessible behind the glove compartment. Technician B says that some cabin filters are accessible from under the hood. Which technician is correct?

Correct AnswerverifiedA

Which of the following is NOT a sensor in an ATC system?

Correct AnswerverifiedShow Answer

Which of these is an example of a three-position actuator?

Correct AnswerverifiedShow Answer

The purpose of the afterblow system is to dry the evaporator to help prevent the formation of ________ in the evaporator case.

Correct AnswerverifiedShow Answer

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