A Vehicle Is Being Diagnosed for Poor A/C Performance

question 103

Multiple Choice

A vehicle is being diagnosed for poor A/C performance. The engine is started, and when the system is set to MAX A/C, the compressor engages normally. When the temperature control knob is moved from hot to cool, only hot air blows out of the A/C outlets. Technician A says there is a problem with the air duct system or the controls. Technician B says the system is low on refrigerant. Who is correct?

• A)A only
• B)B only
• C)both A and B
• D)neither A nor B

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Definitions:

Perceptual Set

A psychological framework or expectation that significantly influences one’s perception of sensory information.

Psychokinesis

The supposed ability to move objects by mental effort alone.

Retinal Disparity

The difference in visual images that each eye perceives because of the eyes’ different positions, contributing to depth perception.

Linear Perspective

A technique in art and drawing that creates the illusion of depth on a flat surface by converging parallel lines towards a single point on the horizon.