Which of the following sub-systems does an automatic climate system NOT control?

Technician A says that to check the cooling fan operation, you may be able to use bidirectional controls on the scan tool. Technician B says a scan tool is the only tool required for testing the cooling fan. Who is correct?

The ECU sends output commands to which type of component to control fan speed, heater core coolant flow, and air-conditioning clutch activation?

Most hybrid vehicles use a _____ to drive the air-conditioning compressor.

The position of the servo motor can be reported back to the ECU by use of a:

Electric actuators have small plastic gears inside that can strip out if the mode doors get jammed or develop excessive _____ when turning.

Air doors are controlled by all of the following methods EXCEPT:

One of the first steps in checking the operation of an automatic or semiautomatic HVAC system is to research the system’s operation in the _____, which will give you a good idea of how to perform a thorough testing.

Technician A says that the benefit of a dual drive air-conditioning compressor is that it can be belt driven or driven by the high-voltage battery. Technician B says that the purpose of the dual drive is to provide two speeds of air-conditioning compressor operation. Who is correct?

In a system equipped with a rear climate control panel, with the rear air control panel selected on the front panel, the rear passengers can typically select _____

Technician A says that when troubleshooting an automatic temperature-controlled air-conditioning or heating problem, one of the first steps should be to check codes for any related faults. Technician B says that codes should only be consulted if you get stuck during diagnosis. Who is correct?

Technician A says that if the air gap between the compressor clutch and the pulley is too large, the clutch may not engage. Technician B says that if system voltage is too low, the compressor clutch will not engage. Who is correct?

The door that is responsible for shutting off outside airflow to the cabin when maximum air-conditioning is selected is the:

In the automotive climate control system, the _____ measures the temperature of the outside air.

The temperature sensor is a valuable input to the climate control system’s ECU to ensure that it knows what the temperature is so it can cause the actuators to respond appropriately.

The ______ is responsible for circulating air in the passenger compartment.

The compressor in a hybrid air-conditioning system may be driven by the internal combustion engine through a standard belt and _____, just like a standard air-conditioning compressor clutch arrangement on a non-hybrid vehicle.

A jammed blower motor fan could result in:

A(n) HVAC system uses an ECU to determine when to run the compressor and the amount of heat required to match and maintain the desired temperature selected by the operator.

If the climate control system that is being worked on has a(n) _____ panel, there will be a rotary or linear switch for fan speed, a rotary or linear switch for modes (floor, defrost, vent, or vent and floor), and a rotary or linear switch for temperature.

The air box typically contains two doors to control temperature and function. They are known as the blend door and the _____ door.

_____ control a relatively large current flow in one part of a circuit by a much smaller current flow.

The ECU of an HVAC system needs to know all of the following EXCEPT:

ECUs depend heavily on _____ sensors to make the correct decisions.