Test Bank for Automotive

Test Bank for Automotive Technology A Systems Approach 8 th Edition By Jack Erjavec, Rob Thompson (All Chapters 1-55, 100% Original Verified, A+ Grade) All Chapters Arranged

Reverse: 55-1

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Chapter 55: Air-Conditioning Diagnosis and Service

• A manifold gauge set can be used during the evacuation of the A/C system.
• True
• Fals

e

ANSWER: True

• It is acceptable to mix refrigerants in a vehicle’s A/C system.
• True
• Fals

e

ANSWER: Fals

e

• There is a specific recovery/recycle/recharge machine designed to service R-1234yf systems.
• True
• Fals

e

ANSWER: True

• Toyota recommends the use of leak-detecting dyes.
• True
• Fals

e

ANSWER: Fals

e

• A manifold gauge set can be used during A/C system diagnosis.
• True
• Fals

e

ANSWER: True

• A problem with the HVAC mode control linkage, doors, or motor circuit cannot set a DTC.
• True
• Fals

e

ANSWER: Fals

e

• A manifold gauge set is used to determine both high-side and low-side pressures in the refrigeration system.
• True
• Fals

e

ANSWER: True

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Chapter 55: Air-Conditioning Diagnosis and Service

• Warm underhood temperatures produce lower than normal A/C system pressures.
• True
• Fals

e

ANSWER: Fals

e

• A single drop of water in an A/C refrigeration system may cause damage to the system.
• True
• Fals

e

ANSWER: True

• Refrigerant is lighter than oxygen.
• True
• Fals

e

ANSWER: Fals

e

• R-12 is stored in light blue containers.
• True
• Fals

e

ANSWER: Fals

e

• R-134a is stored in yellow containers.
• True
• Fals

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ANSWER: Fals

e

• The high- and low-pressure fittings must be changed during an R-12 to R-134a conversion.
• True
• Fals

e

ANSWER: True

• The high-voltage electrical system of a hybrid vehicle should be shut down and isolated from the vehicle prior to

working on the A/C compressor.

• True
• Fals

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Chapter 55: Air-Conditioning Diagnosis and Service

ANSWER: True

• In an R-12 to R-134a conversion, a high-pressure cutoff switch should be installed if the system does not have one.
• True
• Fals

e

ANSWER: True

• In some states and provinces, a technician must be certified by an EPA-approved program to buy refrigerant.
• True
• Fals

e

ANSWER: True

• A sight glass is normally found on systems using R-134a and an orifice tube.
• True
• Fals

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ANSWER: Fals

e

• EPA certification is required to service R-12 A/C systems.
• True
• Fals

e

ANSWER: True

• In an R-134a system, pressure and performance testing are the only ways to identify low refrigerant levels.
• True
• Fals

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ANSWER: Fals

e

• EPA certification is required to purchase R-12.
• True
• Fals

e

ANSWER: True

• All new vehicles sold in the United States are required to have a cabin air filter or a slot where one can be installed.
• True
• Fals

e

ANSWER: Fals

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