Ase A7 Heating Air Conditioning Exam

An EATC air conditioning system has low fan speed operation during high demand situations, like in direct sunlight. Technician A says this is because something is covering the sun load sensor's photo diode. Technician B says a sun load sensor is a variable resistor and can be tested with an ohmmeter. Who is correct? {Ans: Both technicians are correct.}A compressor clutch coil is being tested. There is 12 volts at the connector and the ground is good. The resistance of the coil is 0.00 Ohms. Technician A says the coil has an open in it's windings. Technician B says the clutch coil has a short and has failed the resistance test. Who is correct? {Ans: TECH B is correct. The test indicates that the circuit is providing within a volt of battery/charging voltage which is good, but indicates that there's a short in the coil. The clutch coil must be replaced.}A vehicle's air conditioner blows cold air at normal speeds, but warm air while sitting at stop lights. The LEAST likely cause of this condition is: A. An overheating engine. B. A weak electric fan motor. C. A frozen expansion valve. D. Debris in the condenser fins.