ASE A/C Exam Questions and Answers
100% Solved | Graded A+ | Latest Update
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? - ✔✔Both A and B
A gurgling sound is heard coming from inside the dashboard of a vehicle.
Technician A says this is air trapped in the heater core. Technician B says
this noise can be caused by a blown head gasket. Who is correct? -
✔✔Both A and B
A manifold gauge indicates a system has low discharge pressure. The
MOST likely cause of this condition is: - ✔✔A damaged compressor reed
valve.
The compressor is rapidly cycling on and off on a CCOT (cycling clutch
orifice tube) air conditioning system. Technician A says this condition can
1
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, be caused by a low refrigerant charge. Technician B says this could be
caused by a faulty clutch cycling switch. Who is correct? - ✔✔Both A and B
Technician A says while performing a retrofit from R-12 refrigerant to
R134a refrigerant, the refrigerant must be recovered into a dedicated
cylinder, they cannot be mixed. Technician B says R-12 refrigerant
functions at higher pressures than R-134a refrigerant does. Who is correct?
- ✔✔Tech A
Technician A says an ambient temperature sensor senses cabin air
temperature. Technician B says a faulty ambient temperature sensor can
prevent compressor clutch engagement. Who is correct? - ✔✔Tech B
During an initial inspection, the technician notices that one line on the
receiver drier is cooler than the other. This is caused by: - ✔✔A restriction
in the receiver drier.
During a performance test on a CCOT system the manifold gauge indicates
that the high side pressure is low and the low side pressure is high. This is
caused by a: - ✔✔Faulty compressor
An air conditioning system blows only warm air when the heater is on high
output. Technician A says this could be a faulty heater control valve.
2
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
100% Solved | Graded A+ | Latest Update
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? - ✔✔Both A and B
A gurgling sound is heard coming from inside the dashboard of a vehicle.
Technician A says this is air trapped in the heater core. Technician B says
this noise can be caused by a blown head gasket. Who is correct? -
✔✔Both A and B
A manifold gauge indicates a system has low discharge pressure. The
MOST likely cause of this condition is: - ✔✔A damaged compressor reed
valve.
The compressor is rapidly cycling on and off on a CCOT (cycling clutch
orifice tube) air conditioning system. Technician A says this condition can
1
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, be caused by a low refrigerant charge. Technician B says this could be
caused by a faulty clutch cycling switch. Who is correct? - ✔✔Both A and B
Technician A says while performing a retrofit from R-12 refrigerant to
R134a refrigerant, the refrigerant must be recovered into a dedicated
cylinder, they cannot be mixed. Technician B says R-12 refrigerant
functions at higher pressures than R-134a refrigerant does. Who is correct?
- ✔✔Tech A
Technician A says an ambient temperature sensor senses cabin air
temperature. Technician B says a faulty ambient temperature sensor can
prevent compressor clutch engagement. Who is correct? - ✔✔Tech B
During an initial inspection, the technician notices that one line on the
receiver drier is cooler than the other. This is caused by: - ✔✔A restriction
in the receiver drier.
During a performance test on a CCOT system the manifold gauge indicates
that the high side pressure is low and the low side pressure is high. This is
caused by a: - ✔✔Faulty compressor
An air conditioning system blows only warm air when the heater is on high
output. Technician A says this could be a faulty heater control valve.
2
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
