Deck 63: Automatic Air-Conditioning System Operation

Question 1

In heating mode, where is the airflow directed?

A)Dash vents
B)Floor
C)Windshield
D)Both B and C

Answer 1

Both B and C

Question 2

Which sensor is also called the ambient air temperature sensor?

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

Answer 2

Outside air temperature

Question 3

What is the most common type of sunload sensor?

A)PTC thermistor
B)Potentiometer
C)Photo diode
D)NTC thermistor

Answer 3

Photo diode

Question 4

An actuator can be capable of how many positions?

A)Variable
B)Three
C)Two
D)All of these

Question 5

Some cabin filters contain ________ to absorb odors

A)Synthetic fibers
B)Paper filter material
C)Activated charcoal
D)Perfume

Question 6

Which sensor might use an aspirator tube?

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

Question 7

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?

A)Both technicians A and B
B)Neither technician A nor B
C)Technician A only
D)Technician B only

Question 8

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

A)Current
B)Voltage
C)Airflow
D)Both A and B

Question 9

Which is NOT part of a rear air conditioning system?

A)Rear heater core
B)Rear blower motor
C)Rear evaporator
D)Rear AC compressor

Question 10

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

A)Evaporator
B)Condenser
C)Compressor
D)Blower motor

Question 11

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

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

Question 12

Where is the ambient temperature sensor usually mounted?

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

Question 13

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

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

Question 14

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?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 15

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

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

Question 16

Which component is used as a feedback circuit?

A)Potentiometer
B)Ambient air temperature sensor
C)Sun load sensor
D)In-car temperature sensor

Question 17

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

A)Air inlet door vacuum motor
B)Blower motor control
C)Blend door actuator
D)Mode air door motor

Question 18

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

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 correct

Question 19

An ATC system has the ability to automatically ________.

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

Question 20

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

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

Question 21

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

A)Air mix doors
B)Compressors
C)Heater cores
D)Evaporators

Question 22

Identify this component.

A)A vacuum pump
B)A heating coil
C)A vacuum motor
D)None of these