<section><h2>US Auto Tech National Championship Qualifier Presented by UNOH </h2><p><p>This Driven to Win challenge is a fast-paced digital challenge presented by our partner, The University of Northwestern Ohio, that tests the core components of modern vehicles. The ten participants with the most correct answers (5 Pros and 5 Students) will qualify to move on to Round 2 of the Driven to Win challenge in September, an at-home brake line repair challenge. </p><p>Only two participants from Round 2 in September will advance to the next phase of the competition and get one step closer to nationals in Tampa! </p></p></section><section><h2><h2><strong>How is heat transfer by convection accomplished?</strong></h2></h2></section><section><h3><h2><strong>The metric term for pressure (psi) is:</strong></h2></h3></section><section><h3><h2><strong>Technician A says convection is the process of heat moving to cold. Technician B says convection also involves the movement of heat upward. Who is correct?</strong></h2></h3></section><section><h3><h2><strong>On an OHV engine, rocker arms are:</strong></h2></h3></section><section><h3><h2><strong>Most bolts in today's engines are referred to as "torque to yield" which means they can be re-used a maximum of how many times?</strong></h2></h3></section><section><h3><h2><strong>When load testing a battery, the voltage should never drop below:</strong></h2></h3></section><section><h3><h2>A car comes into the shop with a loud popping noise or back fire through the intake on acceleration. Testing reveals that the problem is not electrical. Compression tests show normal compression in all cylinders. Technician A says an exhaust lobe is likely worn on the camshaft. Technician B says an intake lobe is likely worn on the camshaft. Who is correct?</h2></h3></section><section><h3><h2>The TPMS (Tire Pressure Monitor Sys.) needs to be relearned after all of the following procedures except:</h2></h3></section><section><h3><h2>When making a wiring repair outside the vehicle you should:</h2></h3></section><section><h3><h2>A voltage drop test measures the amount of:</h2></h3></section><section><h3><h2>Ohm’s is a measurement of electrical:</h2></h3></section><section><h3><h2>Voltage is the measurement of electrical:</h2></h3></section><section><h3><h2>Amperage is the measurement of electrical:</h2></h3></section><section><h3><h2>High impedance volt meter has:</h2></h3></section><section><h3><h2>Technician A says as long as the dog (clutch) teeth of the synchronizer blocker ring are round, the synchronizer can be reused. Technician B says that they synchronizer sleeve should slide smoothly on its splines. Who is correct? </h2></h3></section><section><h3><h2>Technician A says the annular groove is on the outside of a synchronizer sleeve. Technician B says the annular groove directs oil to the counter shaft bearings. Who is correct?</h2></h3></section><section><h3><h2>Technician A states that a fixed CV joint is the most common inner joint on half shafts. Technician B states that a plunging CV joint is the most common outer joint on half shafts. </h2></h3></section><section><h3><h2>If a can of DOT 3 or DOT 4 is left open, the brake fluid will:</h2></h3></section><section><h3><h2>A vehicle is making a whirring noise when idling in neutral with the clutch pedal released. When the clutch pedal is depressed, the noise stops. Technician A says the most likely cause is a bad transmission input shaft bearing. Technician B says the problem is a faulty pilot bearing. Who is correct?</h2></h3></section><section><h3><h2>Technician A says excessive clutch free travel can indicate an excessively worn clutch disc. Technician B says clutch problems can often be corrected by properly adjusting the clutch linkage. Who is correct?</h2></h3></section><section><h3><h2>Technician A says when installing a clutch disc, the splines of the disc should be clean, but never oiled or greased. Technician B says the disc should always be installed with its hub and springs toward the engine. Who is correct? </h2></h3></section><section><h3><h2>What is the purpose of VVT (Variable Valve Timing) in an engine?</h2></h3></section><section><h3><h2>What is the difference, of the braking surfaces, between the Primary and Secondary shoes?</h2></h3></section><section><h3><h2>To check rotor parallelism, you would use a:</h2></h3></section><section><h3><h2>Technician A says that fixed calipers have only one piston. Technician B says that floating calipers have at least two pistons. Who is correct?</h2></h3></section><section><h3><h2>Technician A says that a "Hydro boost" brake system is operated by pressure from the power steering pump. Technician B says that "Hydro boost" brake system is operated by engine vacuum. Who is correct?</h2></h3></section><section><h3><h2>Which valve is always the bigger of the two, intake or exhaust?</h2></h3></section><section><h3><h2>Technician A says: That cylinder wear is greatest at the bottom of ring travel. Technician B says: That cylinder wear is greatest at the middle of ring travel. Who is correct?</h2></h3></section><section><h3><h2>On a basic DI ignition system, the time the coil is energized to build the magnetic field in the primary winding is called?</h2></h3></section><section><h3><h2>Testing of a Hall Effect switch can be done by:</h2></h3></section><section><h3><h2>While discussing waste spark ignition, Technician A says there are two spark plugs connected in series. Technician B says the two spark plugs are in companion cylinders that are at TDC at the same time. Who is correct?</h2></h3></section><section><h3><h2>The Check Engine Light is flashing and indicates a potential catalyst damage fault. What does this mean?</h2></h3></section><section><h3><h2>On many Pending type codes, what must happen to illuminate the MIL?</h2></h3></section><section><h3><h2>On an OBD II vehicle the short term fuel trim and long term fuel trim values are both at 22% at idle. The short term fuel trim and long term fuel trim values are both at 12% at 2500 rpm. What is the most likely cause?</h2></h3></section><section><h3><h2>On a vehicle with an Active Fuel Management System the computer controls an oil control solenoid that results in?</h2></h3></section><section><h3><h2>The valve body in a rear wheel drive transmission is being cleaned and inspected. Technician A says to clean the valves in mineral spirits and dry them with a lint free cloth. Technician B says to lightly sand the lands of the valves with emery cloth to be sure that all of the gouges are removed. Who is correct?</h2></h3></section><section><h3><h2>The valve body for a 47RE has just been disassembled, cleaned, and inspected. What are the two adjustments that need to be made on the valve body before reinstallation?</h2></h3></section><section><h3><h2>What type of pump is the GM 4L60 transmission equipped with?</h2></h3></section><section><h3><h2>Technician A says when assembling parts of a transmission, especially a valve body, to always use the proper gaskets and seals and lubricate each part with clean ATF. Technician B says to increase the torque value for each fastener by 15% when reusing bolts and other fasteners. Who is correct?</h2></h3></section><section><h3><h2>Technician A says when an external gear drives another external gear, the output will always be in the opposite direction to the input gear. Technician B says when an external gear drives another external gear the output is in the same direction as the input. Who is correct?</h2></h3></section><section><h3><h2>Technician A says that a hybrid electric vehicle uses a power split device inside what may be referred to as the hybrid transaxle. Technician B says the hybrid transaxle functions as a continuously variable transmission. Who is correct?</h2></h3></section><section><h3><h2>Technician A says engine heat is a product of combustion. Technician B says an engine releases heat through the process of convection. Who is correct?</h2></h3></section><section><h3><h2>All of the following statements about engine cooling are true except:</h2></h3></section><section><h3><h2>After a vehicle has been driven for 10-15 miles, the heater still continues to blow cool air even though the engine is at normal operating temperature. Which of the following is the most likely cause? </h2></h3></section><section><h3><h2>Technician A says a defective radiator cap vacuum valve may cause hoses to collapse. Technician B says a defective pressure valve may cause coolant boil over and loss. Who is correct?</h2></h3></section><section><h3><h2>If a thermostat fails in the open position, all of the following will occur except:</h2></h3></section><section><h3><h2>All of the following conditions could cause an engine coolant loss except:</h2></h3></section><section><h3><h2>A vehicle is in for service with a complaint of poor heat output. The technician finds air trapped in the heater core. What is the most likely cause of this condition? </h2></h3></section><section><h3><h2>An engine coolant temperature switch or air conditioner select switch is used to energize the</h2></h3></section><section><h3><h2>Technician A says one purpose of a thermostat is to cause the engine to warm up as soon as possible. Technician B says the thermostat should be removed from the cooling system only if the engine is overheating. Who is correct?</h2></h3></section><section><h3><h2>When making system repairs, install the receiver-drier or accumulator:</h2></h3></section><section><h3><h2>An air conditioning system should be pumped down (evacuated) for a minimum of __________ minutes according to MACS.</h2></h3></section><section><h3><h2>At highway speed, the A/C system cools normally, but poorly during around town stop and go driving. What is the most likely case of this condition? </h2></h3></section><section><h3><h2>Which of the following is NOT a symptom of an overcharged air conditioning system?</h2></h3></section><section><h3><h2>An inoperative cooling fan may cause high head (high-side) pressure at what vehicle speeds?</h2></h3></section><section><h3><h2>A technician determined that all the refrigerant had leaked out of the A/C system. Technician A says that the low-pressure switch will need to be replaced before the system can be recharged. Technician B says that the low pressure switch will need to be adjusted before the system can be recharged. Who is correct? </h2></h3></section><section><h3><h2>Technician A says that the A/C system may be charged through the LOW side when the system is operating. Technician B says that the A/C system may be charged through the HIGH side when the system is off. Who is correct?</h2></h3></section><section><h3><h2>A technician is checking the evaporator for leaks on an R-134a refrigerant system. Technician A says that it is acceptable to use shop air to pressurize the system and use an electronic microphone to listen for leakage. Technician B says that it is acceptable to charge the system with R-134a and then insert the electronic leak detector probe in the evaporator drain. Who is correct?</h2></h3></section><section><h3><h2>Refrigerant analyzers or identifiers are being discussed. Technician A says the identifier/analyzer will identify the type of refrigerant as well as the purity. Technician B says if "HC" is displayed, then the refrigerant is flammable. Who is correct?</h2></h3></section><section><h3><h2>Charging the system is being discussed. Technician A says the refrigerant must be weighed (or metered) to obtain a proper charge. Technician B says overcharging the system will reduce its cooling efficiency. Who is correct? </h2></h3></section><section><h3><h2>Technician A says there is a direct relationship between the pressure and temperature of a refrigerant. Technician B says any apparent temperature-pressure relationships in a contaminated system is not valid. Who is correct?</h2></h3></section><section><h3><h2>A manifold and gauge set is attached to an operating air conditioner. The low-side gauge reading is too high and the high-side reading is too low. What could be the problem?</h2></h3></section><section><h3><h2>Most original equipment manufacturers use what type of lubricant in their R-134a systems? </h2></h3></section><section><h3><h2>Which of the following could cause very low pressures on the low side of a system equipped with an expansion valve?</h2></h3></section><section><h3><h2>An undercharged system will show which of the following gauge readings?</h2></h3></section><section><h3><h2>Technician A says a four-speed blower motor will have 3 resistors. Technician B says all blower motors have windings in the motor to control blower speed. Who is correct?</h2></h3></section><section><h3><h2>Which of the following is not a symptom of an overcharged air conditioning system?</h2></h3></section><section><h3><h2>Technician A says the purpose of the low pressure cycling switch is evaporator temperature control. Technician B says the purpose of the pressure relief switch is system protection. Who is correct?</h2></h3></section><section><h3><h2>Technician A says that the electronic leak detector probe should be held directly against a suspected leak area during a leak test. Technician B says that the electronic leak detector requires routine probe tip inspection and maintenance. Who is correct?</h2></h3></section><section><h3><h2>A technician determined that all the refrigerant had leaked out of the A/C system. Technician A says that the low-pressure switch will need to be replaced before the system can be recharged. Technician B says that the low pressure switch will need to be adjusted before the system can be recharged. Who is correct?</h2></h3></section><section><h3><h2>Technician A says an AC generator cannot produce current until battery current flows through the stator windings. Technician B says an AC generator cannot produce current until battery current flows through the field coil of the rotor. Who is correct?</h2></h3></section><section><h3><h2>Charging system indicator lamp operation is being discussed: Technician A says in a charging system with an electronic regulator, the lamp will illuminate if there is no stator output through the diode trio. Technician B says if there is stator output, the lamp circuit has power applied to both sides of the lamp and it will not illuminate. Who is correct?</h2></h3></section><section><h3><h2>Which of the following could possibly cause a battery to be undercharged?</h2></h3></section><section><h3><h2>A technician is checking the charging system for low output. A voltage drop of 1.67 volts is found between the generator output terminal and the battery positive terminal. Technician A says that a corroded connector could be the cause. Technician B says that a defective rectifier diode could be the cause of the voltage drop. Who is correct?</h2></h3></section><section><h3><h2>If a stator has 3 windings, how many diodes (positive and negative) will the rectifier have?</h2></h3></section><section><h3><h2>Technician A says a fully charged lead acid battery contains plates made of lead dioxide and lead sulfate. Technician B says a fully charged lead acid battery contains plates made of lead sulfate and sponge lead. Who is correct?</h2></h3></section><section><h3><h2>Technician A says the plates of a completely discharged battery are two similar metals in the presence of water. Technician B says the plates of a completely discharged battery are two dissimilar metals in the presence of an electrolyte. Who is correct?</h2></h3></section><section><h3><h2>Ice crystals are found in the electrolyte: Technician A says this indicates the battery is discharged. Technician B says the battery can be safely jumped. Who is correct?</h2></h3></section><section><h3><h2>Technician A says connecting battery cables in reverse polarity can damage many of the vehicle's computer systems. Technician B says the battery must be secured in the vehicle to prevent damage and the possibility of shorting across the terminals if it tips. Who is correct?</h2></h3></section><section><h3><h2>Technician A says maintenance-free batteries do not need additional water. Technician B says maintenance-free batteries have a small valve to relieve gas pressure. Who is correct?</h2></h3></section><section><h3><h2>A customer's battery is always dead when she attempts to start her car in the morning. After jumping the battery one time in the morning, the car will start throughout the day with no problems: Technician A says the starter motor may be drawing too much current. Technician B says there may be a glove box light staying on. Who is correct?</h2></h3></section><section><h3><h2>Technician A says there are electrical demands placed on the battery with the ignition switch turned off. Technician B says after the engine is started, the vehicle's charging system works to recharge the battery and provides current to run the vehicle’s electrical systems. Who is correct?</h2></h3></section><section><h3><h2>The current capacity rating of the battery is being discussed: Technician A says the amount of electrical energy a battery is capable of producing depends on the size, weight, and active area of the plates. Technician B says the current capacity rating of the battery depends on the types of materials used in the construction of the battery. Who is correct?</h2></h3></section><section><h3><h2>Technician A says the largest demand placed on the battery is when it must supply current to operate the starter motor. Technician B says current requirements of a starter motor may be over several hundred amperes. Who is correct?</h2></h3></section><section><h3><h2>All of the following sensors produce their own voltage except:</h2></h3></section><section><h3><h2>When looking at a MAF sensor pattern on an oscilloscope which of the following are true?</h2></h3></section><section><h3><h2>An oscilloscope does all of the following except?</h2></h3></section><section><h3><h2>echnician A says a hall-effect sensor produces an analog signal. Technician B says a halleffect sensor produces a digital signal. Who is correct?</h2></h3></section><section><h3><h2>Technician A says when testing the magnetic pulse generator, a DMM may be used to test the resistance value of the coil. Technician B says a DMM may be used to measure AC voltage across the sensors terminals. Who is correct?</h2></h3></section><section><h3><h2>A MIRE sensor is being discussed. Technician A says the MIRE’s reluctor wheel has both north and south poles on it. Technician B says the MIRE gives off a digital signal? Who is correct?</h2></h3></section><section><h3><h2>Electrically erasable PROM (EEPROM) is designed so the information is erasable and a manufacture’s scan tool can update the information.</h2></h3></section><section><h3><h2>Technician A says nonvolatile RAM will lose its memory if removed from its power source. Technician B says volatile RAM is not erased when it is disconnected from its power source. Who is correct?</h2></h3></section><section><h3><h2>A ground is always an output.</h2></h3></section><section><h3><h2>Which of the following determines the power of a computer?</h2></h3></section><section><h3><h2>Technician A says a central processing unit and a microprocessor are the same thing. Technician B says the computers clock determines how fast information will be processed. Who is correct?</h2></h3></section><section><h3><h2>Which of the following is an actuator?</h2></h3></section><section><h3><h2>Which of the following is not one of the main functions of a computer?</h2></h3></section><section><h3><h2>Duty cycle is the amount of time something is on.</h2></h3></section><section><h3><h2>Pulse width is percentage of time something is on.</h2></h3></section><section><h3><h2>Frequency is the number of events that happen in a time period.</h2></h3></section><section><h3><h2>Technician A says programs are sometimes displayed in a pictorial format or a graph so adjustments can easily be seen. Technician B says hertz is the unit of measurement for frequency. Who is correct?</h2></h3></section><section><h3><h2>A driver circuit is used to turn on a component.</h2></h3></section><section><h3><h2>Programmable read only memory is designed to be changed repeatedly.</h2></h3></section><section><h3><h2>Programmable read only memory contains specific data that pertains to the exact vehicle in which the computer is installed.</h2></h3></section><section><h3><h2>Resistive multiplexing could be used in all of the following except:</h2></h3></section><section><h3><h2>Bluetooth technology allows devices from different manufacturers to be connected using a standardized wireless transmission.</h2></h3></section><section><h3><h2>The Media Oriented System Transport (MOST) cooperation data bus system uses fiber optics to transmit data.</h2></h3></section><section><h3><h2>Controller Area Network (CAN) diagnostics is being discussed. Technician A says the CAN “A” bus is used for low speed communications. Technician B says the CAN “B” bus may be active when the ignition is off. Who is correct?</h2></h3></section><section><h3><h2>Controller Area Network (CAN) is being discussed. Technician A says the CAN system uses analog signals for its multiplexing communication. Technician B says the CAN system uses digital signals for its multiplexing communication. Who is correct?</h2></h3></section><section><h3><h2>Technician A says modules on the Media Oriented System Transport (MOST) data bus use an LED, photodiode, and a transceiver to communicate. Technician B says the Media Oriented System Transport (MOST) system uses fiber optics to transmit data at a slow baud rate. Who is correct?</h2></h3></section><section><h3><h2>The term “Valve overlap” refers to:</h2></h3></section><section><h3><h2>Technician<em> </em>A says that the intake valve always opens at exactly TDC on the exhaust stroke. Technician<em> </em>B says that valve overlap creates a scavenging effect. Who is correct?</h2></h3></section><section><h3><h2>Technician A<em> </em>says the piston must be at the top dead center of the compression stroke when performing a cylinder leakage test. Technician B says a head gasket is leaking if the air escapes from the throttle body during a cylinder leakage test. Who is correct?</h2></h3></section><section><h3><h2>Intake manifold vacuum is highest during what operating condition?</h2></h3></section><section><h3><h2>Which of the following represents the correct sequence of the 4-stroke cycle?</h2></h3></section><section><h3><h2>The OBD II electronic AIR system pumps air into the:</h2></h3></section><section><h3><h2>Technician A says OEM active intake manifolds are designed to increase air velocity for low RPM performance. Technician B says OEM active intake manifolds are designed to increase air volume for high RPM performance. Who is correct?</h2></h3></section><section><h3><h2>While evaluating a cylinder leakage test, Technician A says if the air escapes from the tailpipe, an intake valve is leaking.<em> </em>Technician B says the piston must be at TDC on the exhaust stroke when performing the cylinder leakage test. Who is correct?</h2></h3></section><section><h3><h2>Two technicians were discussing the exhaust system. Technician A says that a rattling noise when the engine is accelerated can be caused by loose internal components in the muffler. Technician B says that a lack of engine power can be caused by a restricted exhaust system. Who is correct?</h2></h3></section><section><h3><h2>Technician A says that the exhaust is routed past the compressor wheel of the turbocharger. Technician B says that the supercharger can use an intercooler. Who is correct?</h2></h3></section><section><h3><h2>Technician A<em> </em>says that computer feedback is information sent back to the computer to confirm that a command was carried out by an actuator. Technician B<em> </em>says that feedback can also be in the form of a monitored voltage signal to a switch or relay. Who is correct?</h2></h3></section><section><h3><h2>Technician A says a 10W-30 oil pours more easily than a straight 5W-20 oil at 32<sup>o</sup> F. Technician B says synthetic oil has improved stability over a wider temperature range compared to a conventional oil. Who is correct?</h2></h3></section><section><h3><h2>Short-term fuel trim (STFT) adds or subtracts fuel to correct for</h2></h3></section><section><h3><h2>An O2 sensor may be used to monitor the:</h2></h3></section><section><h3><h2>All of the following are PCM actuators except:</h2></h3></section><section><h3><h2>Technician A says pulse width modulation is the duration of on time, but not connected to a specific cycle time. Technician B says duty cycle is measured in percentages. Who is correct?</h2></h3></section><section><h3><h2><p>Technician A says that if the engine rpm is stable, the scan tool should show a fluctuating MAF reading. Technician B says that the MAF sensor can be a frequency-producing sensor. Who is correct?</p></h2></h3></section><section><h3><h2>Technician A says fuel pumps can be checked for amperage draw and for a current waveform. Technician B says a low amp clamp is connected in series with the circuit being tested. Who is correct?</h2></h3></section><section><h3><h2>Technician A says that duty cycle is a percentage of time in a fixed cycle that a device is “On”. Technician B says that if a full cycle were 1 second in length, a 50 percent duty cycle means that the device was “On” for 0.5 second. Who is correct?</h2></h3></section><section><h3><h2>Technician A says that long-term fuel trim is constantly changing for driving conditions. Technician B says that the PCM can add or subtract about 10 percent of the base fuel trim before setting a trouble code. Who is correct?</h2></h3></section><section><h3><h2>The octane rating of the fuel will determine which of the following?</h2></h3></section><section><h3><h2>The PCM uses the throttle position sensor to monitor the:</h2></h3></section><section><h3><h2>The EVAP system is designed to reduce which emission?</h2></h3></section><section><h3><h2>Technician A says that the oxygen sensor produces a high-voltage signal when the exhaust is lean. Technician B says that the oxygen sensor produces a low-voltage signal when the exhaust is rich. Who is correct?</h2></h3></section><section><h3><h2>To help isolate a clogged or dirty injector:</h2></h3></section><section><h3><h2>Technician A says low fuel pressure may be caused by a restricted fuel filter. Technician B says when testing fuel pressure make sure the specifications are either for the engine running or the engine off. Who is correct?</h2></h3></section><section><h3><h2>What is a main advantage of GDI systems?</h2></h3></section><section><h3><h2>Which of the following fuel systems can have fuel pressure of over 1500 psi?</h2></h3></section><section><h3><h2>Technician A says an injector ohm test is the most accurate method of testing a fuel injector’s operation. Technician B says an injector ohm test can only confirm a defective injector winding. Who is correct?</h2></h3></section><section><h3><h2>While discussing DFI fuel injection systems, Technician A says that DFI systems have a low-pressure fuel system. Technician B says that DFI systems have a high-pressure fuel system. Who is correct?</h2></h3></section><section><h3><h2>Technician A says that when conditions such as starting or wide-open throttle demand that the signals from the oxygen sensor be ignored, the system operates in open loop. Technician B says that when the PCM is using feedback from the oxygen sensor to control fuel injection, it is in closed loop. Who is correct?</h2></h3></section><section><h3><h2><p>Technician A says that most port fuel injection systems supply the injectors a full battery voltage. Technician B says that the port fuel injector ground wire is routed to the PCM. Who is correct?</p></h2></h3></section><section><h3><h2>Technician A says one component of the secondary ignition circuit is the ignition coil. Technician B says the ignition coil is a component in the primary ignition circuit. Who is correct?</h2></h3></section><section><h3><h2>For maximum engine power to be obtained, maximum cylinder pressure should occur:</h2></h3></section><section><h3><h2>Which of the following represents the amount of voltage necessary to sustain the spark across the spark plug gap?</h2></h3></section><section><h3><h2>Technician A says as engine speed slows, the timing should be retarded or have less advance. Technician B says typically, the more load on an engine, the less spark advance is needed. Who is correct?</h2></h3></section><section><h3><h2>The time during which current flows through the primary coil winding is called:</h2></h3></section><section><h3><h2>A vehicle has a no-spark condition on a waste spark ignition system. Technician A says the crankshaft position sensor may need to be replaced. Technician B says the ignition module could be faulty. Who is correct?</h2></h3></section><section><h3><h2>All of the following are advantages of EI systems except:</h2></h3></section><section><h3><h2>The EGR valve works by recirculating a portion of the exhaust gases back into the intake manifold. This results in:</h2></h3></section><section><h3><h2>Natural gas is composed primarily of:</h2></h3></section><section><h3><h2>While discussing waste spark ignition, Technician<em> A</em> says that there are two spark plugs connected in series. Technician B says that the two spark plugs are in companion cylinders that are at TDC at the same time. Who is correct?</h2></h3></section><section><h3><h2>While discussing the diagnosis of an EI system, Technician A says that the coil primary normally has between 5,000 and 20,000 ohms. Technician B says that the coil secondary normally has less than 2 ohms. Who is correct?</h2></h3></section><section><h3><h2>Technician A says that some coil on plug systems have an ignition module that is part of the PCM. Technician B says that some coil on plug ignition systems have a separate ignition module built into each coil assembly. Who is correct?</h2></h3></section><section><h3><h2>While discussing EVAP valves, Technician A says the evaporative emissions system must be able to detect a leak as small as 0.020 inches in size. Technician B says that the monitor for the EVAP system works by closing the purge and vent valves and watching to see if the tank pressure increases. Who is correct?</h2></h3></section><section><h3><h2>Technician A says that if the PCM is correcting for a lean condition, the long-term FT will indicate a negative number. Technician B says that a rich condition causes the long-term FT to show a positive number. Who is correct?</h2></h3></section><section><h3><h2>Technician A says propane is heavier than natural gas. Technician B says natural gas is lighter than air. Who is correct?</h2></h3></section><section><h3><h2><p data-list="0" data-level="1">Technician A says the major drawback to most alternative fuels is fuel storage. Technician B says the major drawback is the increase in emissions. Who is correct?</p></h2></h3></section><section><h3><h2>Technician A says CNG, LNG, Propane have no evaporative emissions. Technician B says E85, M85 and gasoline have no evaporative emissions. Who is Correct?</h2></h3></section><section><h3><h2><p data-list="0" data-level="1">Technician A says “Raw” vegetable oil is not a certified fuel for Highway use. Technician B says Bio-Diesel is a certified fuel and it is tested for Highway use. Who is correct?</p></h2></h3></section><section><h3><h2>What is the Chemical added to CNG and Propane for an odorant?</h2></h3></section><section><h3><h2><p data-list="0" data-level="1">Flexible fuel vehicles can operate on which fuel?</p></h2></h3></section><section><h3><h2><p data-list="0" data-level="1">Which contaminate is found in CNG that causes operating problems?</p></h2></h3></section><section><h3><h2><p data-list="0" data-level="1">Bio-diesel contains little or no toxins and quickly bio degrades when spilled on the ground or in the water.</p></h2></h3></section><section><h3><h2>The auto ignition temperature of methane (Natural gas) is about _________ as high as that of gasoline.</h2></h3></section><section><h3><h2><p data-list="0" data-level="1">Technician A says CNG is the preferred method of natural gas storage on light-duty vehicles. Technician B says LNG is the preferred method of storage on light-duty vehicles. Who is correct?</p></h2></h3></section><section><h3><h2>All are true about the A.S.M.E. Propane tank except:</h2></h3></section><section><h3><h2>Technician A says that a hoop-wrapped cylinder has a thicker metal liner than a full-wrapped cylinder. Technician B says that on an all-composite cylinder the thin plastic liner carries the full pressure load of the cylinder. Who is correct?</h2></h3></section><section><h3><h2>While discussing CNG (NGVII) cylinder inspection, Technician A says that a Detailed Visual Inspection should be performed every 36,000 miles by a technician. Technician B says NGV II standards require an inspection every 3 years by a certified cylinder Inspector. Who is correct?</h2></h3></section><section><h3><h2>All of the following are true except:</h2></h3></section><section><h3><h2>LPG fuel tanks shall be securely mounted to withstand static load in any direction equal to four times the weight of the container filled with fuel.</h2></h3></section><section><h3><h2>Technician A says LPG tanks do not use pressure relief devices. Technician B says all PRD are not adjustable. Who is correct?</h2></h3></section><section><h3><h2>Technician A says LPG system must have a ¼ turn shut off valve. Technician B says CNG system must have a ¼ turn shut off valve or an electric lock-off. Who is correct? </h2></h3></section><section><h3><h2>Technician A says LPG tanks can be used for CNG in an emergency. Technician B says CNG tanks can be used for LPG at any time. Who is correct?</h2></h3></section><section><h3><h2>Technician A says it is okay to weld on a CNG cylinder to mount a bracket. Technician B says it is safe to drill into a LPG tank to attach a pressure gauge. Who is correct?</h2></h3></section><section><h3><h2>Technician A says on a propane vehicle the Max. Liquid Gauge can be used for filling. Technician B says on a CNG vehicle a Max. Liquid Gauge is not used. Who is correct?</h2></h3></section><section><h3><h2>Technician A says it is okay to paint LPG Cylinders, which will be mounted outside the vehicle, black. Technician B says black paint (if tank was painted) will cause too much venting. Who is correct?</h2></h3></section><section><h3><h2>A technician notices that a CNG cylinder is loose in its brackets due to a missing rubber insulator. Technician A replaces the rubber insulator and delivers the vehicle to the customer. Technician B says that a certified cylinder inspector is to be contacted to make sure there is no damage to the cylinder. Who is correct?</h2></h3></section><section><h3><h2>While discussing propane tanks, Technician A says the pressure relief valve is internally mounted. Technician B says the pressure relief valve is externally mounted. Who is correct?</h2></h3></section><section><h3><h2>A vehicle is being converted to propane; Technician A says that NFPA 52 manual should be consulted during this conversion. Technician B says that the NFPA 58 manual should be consulted during this conversion. Who is correct?</h2></h3></section><section><h3><h2>Installation of a propane tank is being discussed. Technician A says to install the tank any place it fits. Technician B says the lowest part of the tank should not be lower than the lowest point on the vehicle. Who is correct?</h2></h3></section><section><h3><h2>The vent or vents for the venting system shall not exit into a wheel well.</h2></h3></section><section><h3><h2>Technician A says the venting of gas through a fixed maximum liquid level gauge during filling shall not be required when the engine fuel container being fueled is equipped with an overfilling prevention device. Technician B says although this may be true some filling stations refuse to fill vehicles using the Max. Liquid Level Bleed Valve because of the low level emission law. Who is correct?</h2></h3></section><section><h3><h2>LPG regulators are being discussed. Technician A says engine coolant is used to prevent freezing inside the vaporizer. Technician B says exhaust gases was used in older regulators and should not be used in coolant type regulators. Who is correct?</h2></h3></section><section><h3><h2>CNG fuel lines are being discussed. Technician A says pipe, tubing, fittings, and other piping components shall be designed with a pressure rating. Technician B says a pressure gauge, if provided, shall be capable of reading at least 1.2 times the system design pressure. Who is correct?</h2></h3></section><section><h3><h2>Shields on CNG tanks are being discussed. Technician A says there should be no direct contact between the shield and the CNG tank. Technician B says using a metal shield as a protective device under the clamps is acceptable. Who is correct?</h2></h3></section><section><h3><h2>Technician A says CNG fuel lines may be repaired if damaged. Technician B says the damaged line must be replaced by a certified technician and leak tested. Who is correct?</h2></h3></section><section><h3><h2>CNG electronic shut off valves are being discussed. Technician A says only normally closed valves may be used. Technician B says normally open or normally closed may be used depending on application. Who is correct?</h2></h3></section><section><h3><h2>Technician A says EPA regulations cover all 50 states. Technician B says CARB regulations cover all 50 states but are more stringent regulations. Who is correct?</h2></h3></section><section><h3><h2>Technician A says EPA regulations require a warranty on all aftermarket conversions. Technician B says EPA regulations require an emissions test before an aftermarket conversion can be certified. Who is correct?</h2></h3></section><section><h3><h2>Technician A says on a CNG, Bi-fuel vehicle, the operator is able to switch fuels while driving down the road no matter what condition. Technician B says the Alt. Fuel ECM automatically switches to gasoline when the vehicle is low on natural gas. Who is correct?</h2></h3></section><section><h3><h2>Technician A says the regulator delivers fuel to the metering device. Technician B says the CNG single stage regulator delivers fuel to the spray nozzle. Who is correct?</h2></h3></section><section><h3><h2>Technician A says the IAT (Intake Air temperature) sensor is used to calculate air density. Technician B says the MAP (manifold absolute pressure) sensor is a pressure transducer that converts pressure to voltage through a piezo-resistive element. Who is correct?</h2></h3></section><section><h3><h2>Technician A says the FRT (fuel rail temperature) sensor measures temperature for fuel density. Technician B says the FRT is a pressure sensor that is used to calculate fuel density. Who is correct?</h2></h3></section><section><h3><h2>Technician A says a CNG injection system uses a single stage regulator. Technician B says the CNG single stage regulator is a high-pressure regulator that reduces pressure to 100 psi. Who is correct?</h2></h3></section><section><h3><h2>All of the following statements concerning the Toyota Hybrid Systems (THS) are true <span style="text-decoration:underline;">except </span>it:</h2></h3></section><section><h3><h2>Two technicians are discussing the benefits of the Electric Motor Power Steering System (EMPS). Technician A says that EMPS does not require that the engine be running to provide steering assist. Technician B says that EMPS produces better fuel economy than conventional hydraulic power steering because it is lighter in weight and uses energy only when steering assist is required. Who is correct?</h2></h3></section><section><h3><h2>All of the following components are contained in the P111 Transaxle except:</h2></h3></section><section><h3><h2>During initial take-off under very light acceleration, which of the following THS components is the primary power source that drives the wheels?</h2></h3></section><section><h2></h2></section><section><h3></h3></section>