Customer Service & Communication Skills

Vehicle Information & Accuracy One of the first things a service consultant should do is prepare the documentation of each vehicle brought in for service. The RO (Repair Order) and vehicle history file must be maintained and updated for paperwork and billing to be accurate. The correct VIN (Vehicle Identification Number) must be used to identify any applicable warranties, TSB’s… Read More

Exhaust Systems Basic’s & Emissions Components

Exhaust System Basic Components The exhaust system is used to remove the burned air/fuel mixture, or exhaust, from the engine, away from the passenger compartment and out the back of the vehicle. The major components of the exhaust system are the exhaust manifold(s), exhaust pipes, catalytic converter(s), muffler and oxygen sensors. The AIR (Air Injection Reaction) system and EGR (Exhaust… Read More

AC Evaporator, Condenser & Related Components

A/C Hoses, Lines And Fittings Refrigerant is routed to the various components in the AC system by rigid lines and flexible high-pressure hoses. Hoses are used to connect components with the compressor, to allow for engine movement. Most other components are connected with rigid lines, although hoses are sometimes used. Most modern hoses are made of reinforced rubber with a… Read More

ASE A7 Heating and Air Conditioning Q & A Part 1

ASE Practice Test Questions & Answers with Explanation 1. When pressure testing the cooling system on a late model vehicle with a gasoline engine, the pressure on the tester drops but no leaks can be found in the engine compartment. Technician A says that there cannot be an internal leak because the engine oil looks normal, not milky like it… Read More

ASE A7 Heating and Air Conditioning Q & A Part 3

ASE Practice Test Questions & Answers with Explanation 1. All of the following are true statements concerning in-line filters EXCEPT: A. They are usually installed in a system that has suffered a compressor failure. B. They are installed to protect the new compressor from metal chips or other debris that could be in the system from the original compressor failure.… Read More

ASE A7 Heating and Air Conditioning Q & A Part 2

ASE Practice Test Questions & Answers with Explanation 1. A vacuum door actuator is being tested. When vacuum is applied with a hand held vacuum pump, the door does not move and the reading on the vacuum gauge is zero. Technician A says that the door does not move because it is binding or obstructed. Technician B says that the… Read More

ASE L1 Advanced Engine Performance Q & A Part 3

ASE Practice Test Questions & Answers with Explanation 1. On the composite vehicle the CAN terminating resistors are located A. In the CAN harness B. In the ECM and the Instrument Cluster C. In the ECM and the Immobilizer module D. In the TCM and the instrument cluster The correct answer is B The wiring schematic for the composite vehicle… Read More

ASE L1 Advanced Engine Performance Q&A Part 2

ASE Practice Test Questions & Answers with Explanation 1. The composite vehicle fails an I/M 240 test due to high carbon monoxide emissions. HC is barely within limits, while NOx is well below the maximum cut-point. Once the cause of the high CO has been corrected, the vehicle is retested and fails again, only this time for excessive NOx. What… Read More

A-8 Engine Performance Q&A

1. An EGR valve vacuum solenoid has 18 Hg. as its vacuum source. The resistance checks out OK. Vacuum pressure is manually applied to the valve with a pump and a slight stumble is noticed. There is little drop in RPM. The most-likely cause of this is: A a faulty vacuum solenoid. B a poor vacuum source. C a restriction… Read More

A-6 Electrical Systems Q&A

1. Technician A says that during a battery capacity test the voltage should not go below 9.6 volts at 70F. Technician B says a battery’s voltage reading should increase as temperature decreases. Who is correct? A Technician A B Technician B C Both A and B D Neither Technician A or B Answer A is correct. If the capacity voltage… Read More