ADX 120
8) checking high voltage battery condition is being discussed. technician A says live readings from a scan tool or laptop computer connected to the diagnostic connector show HV battery voltage, current output while driving, battery temperature, and other readings for evaluating battery condition. Technician B says a conventional 12-volt battery load tester connected to the HV power cables is the recommended method. Who is right? a) A only b) B only c) both A and B d) neither A nor B
a) A only
13) if flux is burned, the joint will be contaminated, and must be clean again before soldering. T) True F) False
T) True
15) in the metric size system, wire diameter increases as the size number increases. T) True F) False
T) True
16) printed circuits are most often used in instrument panels of vehicles. T) True F) False
T) True
13) a discharged battery in a 12-volt vehicle starting system may be able to power the vehicle's headlights and horn but may fail to provide the necessart power to operate the starter motor. T)True F)False
T)True
13) a high voltage battery on a hybrid vehicle uses an ECM and temperature a voltage sensors to turn on the HV battery cooling system when the battery becomes to warm. T)True F)False
T)True
14) the cold cranking amp (CCA) rating of a battery refers to it's ability to crank a specific engine (based on starter current draw) at a specified temperature. T)True F)False
T)True
15) a discharged 12-volt battery can result from a loose alternator belt. T)True F)False
T)True
16) HV battery cables are much thicker than 12-volt battery cables and orange in color. T)True F)False
T)True
18) explosive hydrogen gas can be produced by a battery. T)True F)False
T)True
19) high-voltage and 12-volt battery discharging converts chemical energy into electrical energy. T)True F)False
T)True
20) electrolyte is a mixture of sulfuric acid and distilled water. T)True F)False
T)True
22) each battery cell in a 12-volt battery produces approximately 2.1 volts. T)True F)False
T)True
22) wire size is determined by conudtor diameter and does not include the insulation. T)True F)False
T)True
23) two 12-volt batteries connected in parallel will produce an output of 12 volts. T)True F)False
T)True
20) which of the following wire gages has the lowest resistance (in ohms per 1000 feet)? a) 4 b) 6 c) 8 d) 10
a) 4
23) if a fully charged 12-volt battery shows less than a minimum of _____ volts during a load test at a battery temperature of 70*F (21*C), the battery is bad. a) 9.5 b) 10.8 c) 12.5 d) 14.6
a) 9.5
17) technician A says that electrical diagnosis uses the trial and error approach to solve a simple electrical problem. technician B says that you should ignore any dash warning lights while you investigate a problem Who is right? a) A only b) B only c) both A and B d) neither A nor B
a) A only
7) technician A says that the first step in testing relays is to make sure that voltage is being fed to the relay coil windings. technician B says that voltage will not be fed to the relay coil windings unless the relay contact points are closed. Who is right? a) A only b) B only c) both A and B d) neither A nor B
a) A only
12) what is a hybrid electric vehicle (HEV)? a) a vehicle that uses two power sources (an internal combustion engine in conjunction with a high voltage battery and motor-generator) for propulsion. b) a vehicle that uses only a high-voltage battery and a motor-generator for propulsion c) a vehicle that uses only a compressed natural gas system for propulsion d) a vehicle that uses an internal combustion engine equipped with a turbocharger or supercharger for propulsion.
a) a vehicle that uses two power sources (an internal combustion engine in conjunction with a high voltage battery and motor-generator) for propulsion.
3) each of the following can be performed using a Voltmeter EXCEPT: a) battery plate test b) battery voltage test c) battery leakage test d) battery terminal test
a) battery plate test
14) all of the following are rules for using multimeters except _____. a) do not wiggle wires or use a heat gun to find intermittent problems b) keep the test leads away from hot or moving parts c) zero or calibrate the ohmmeter before use (if necessary) d) make sure the test leads are connected properly
a) do not wiggle wires or use a heat gun to find intermittent problems.
2) what acidic mixture surrounds the battery cells? a) electrolyte b) distilled water c) sulfuric acid d) calcium
a) electrolyte
9) what type of battery can be easily damaged by overcharging? a) gel b) maintenance free c) absorbed glass mat d) HV
a) gel
13) what might make a bulb glow dimly or a motor run slowly? a) high circuit resistance b) short circuit c) grounded circuit d) all of the above
a) high circuit resistance
19) if a voltmeter shows a 0.9 volt drop acros a 12 volt battery post-to-post cable connection during a battery terminal test, the technician should _____. a) remove, clean, and retighten the battery connections. b) document that the measurement is within acceptable limits and release the vehicle back to the customer c) remove the old cables and install new battery cable with a smaller diameter conductor d) replace the battery
a) remove, clean, and retighten the battery connections.
10) technician A says the best test to determine 12-volt battery current output and performance is the battery load test. technician B says high voltage batteries are the only batteries capable of jump-starting the engine in a conventional vehicle with a 12-volt battery. Who is right? a) technician A b) technician B c) both A and B d) neither A nor B
a) technician A
11) two technicians are discussing HV batteries. technician A says that HV batteries are made from nickel metal hydride or lithium ion components. technician B says that an HV battery with 32 battery packs rated at 8.2 volts each wired in series produces 310 volts of direct current. Who is correct? a) technician A b) technician B c) both A and B d) neither A nor B
a) technician A
6) two technicians are discussing abreviations used in wiring diagrams. technician A says that the term "left side of the vehicle" is sometimes abbreviated as "LH". technician B says that the term "left side of the vehicle" is refering to the passenger side. who is correct? a) technician A b) technician B c) both technicians A and B d) neither technician A nor B
a) technician A
9) two technicians are discussing wiring diagrams. technician a says that a code for a blue wire with a yellow stripe could be shown as "BL/Y". technician B says that a code for a black wire with a white tracer would be "BL/W". who is correct? a) technician A b) technician B c) both technicians A and B d) neither technician A nor B
a) technician A
12) a set of several wires wrapped in tape or enclosed in a plastic sheath is referred to as a _____. a) wire harness b) conductor assembly c) wire bundle d) circuit package
a) wire harness
1) what is shown on a wiring diagram as a dot where two or more wires connect? a) wiring splice b) fuse link c) harness connector d) wiring terminal
a) wiring terminal
7) prior to conducting a load test, a fully charged 12-volt battery should have an open circuit (no load) voltage of: a) 5.5 volts b) 12.4 volts or higher c) 14.5 volts or higher d) 25 volts or higher
b) 12.4 volts or higher
21) when fast charging a 12-volt lead-acid battery, you should never exceed a maximum charge rate of _____ amps to avoid accidents. a) 5 b) 35 c) 50 d) 100
b) 35
3) which of the following wire gage sizes would typically be used for 12-volt system from the positive battery post to the starter? a) 16 gage b) 4 gage c) 20 gage d) 14 gage
b) 4 gage
15) technician A says an ammeter is a device for directly measuring circuit resistance. technician B says a multimeter with an inductive pickup does not have to touch the metal terminals of a wire or circuit. Who is right? a) A only b) B only c) both A and B d) neither A nor B
b) B only
20) technician A says that freeze spray can be used to clean electrical contacts. technician B says that contact cleaner can be used to clean switches and other components. Who is right? a) A only b) B only c) both A and B d) neither A nor B
b) B only
8) when testing a switch, which testing device would you use if the switch is removed or isolated from the circuit? a) Ammeter b) Ohmmeter c) jumper wire d) Voltmeter
b) Ohmmeter
25) which of the following statement regarding HV battery removal and replacement is not true? a) an engine crane and nylon strap should be used to raise an HV battery out of a vehicle, if needed. b) a damaged lithium-ion HV battery that begins producing smoke should immediately be doused in water to extinguish it and prevent injury c) a torque wrench should be used to tighten any HV power cable fasteners to specifications after battery replacement. d) the most common reasons for HV battery replacement are age and physical damage (collision).
b) a damaged lithium-ion HV battery that begins prducing smoked should be immediately doused in water to extinguish it and prevent injury.
11) a late-model automobile may contain more than ______ of wire to link electrical/electronic components a) one thousand feet b) a quarter mile c) three thousand feet d) a half mile
b) a quarter mile
2) which of the following substances neutralizes and removes an acid-dirt mixture from a 12-volt battery case? a) sulfur and water b) baking soda and water c) lithium grease and brake cleaner d) distilled water and gasoline
b) baking soda and water
17) battery maintenance includes removing and _____ the battery terminal connections. a) resizing b) cleaning c) bending d) resurfacing
b) cleaning
3) what type of wiring diagram shows how major wiring assemblies are arranged and where they are located in a vehicle? a) power distribution diagram b) harness routing diagram c) block diagram d) system wiring diagram
b) harness routing diagram
7) the insulating elements positioned between the battery plates are known as _____. a) inert plates b) separators c) insulating grids d) partitions
b) separators
10) two technicians are discussing wiring diagrams. technician A says that the left hand (LH) "A" pillar is behind the passenger door. technician B says that the (LH) "B" pillar is behind the driver's door. who is correct? a) technician A b) technician B c) both technicians A and B d) neither technician A nor B
b) technician B
11) technician A says that a good hybrid HV battery should show a voltage reading of almost 100% of maximum charge after a full recharge. technician B says that most hybrids only charge their battery packs to about 80% of maximum charge. Who is right? a) technician A b) technician B c) both A and B d) neither A nor B
b) technician B
24) two technicians are discussing automotive wiring repair. technician A says that a plastic insualted crimp connector is the best method for under vehicle wiring repair. technician B says that the best method for automotive wiring repair is to use solder and heat shrink tubing. Who is correct? a) technician A b) technician B c) both technicians A and B d) neither technician A nor B
b) technician B
4) a customer complains that the 12-volt battery goes dead when her vehicle is not driven for an extended period. a new battery has been installed and tested by another shop. technician A says starter motor current draw should be measured. a shorted starting motor could be draining the battery. Technician B says a battery drain test should be done. An electrical should could be discharging the battery, even with the ignition key off. Who is right? a) technician A b) technician B c) both A and B d) neither A nor B
b) technician B
4) two technicians are discussing 12-volt batteries. technician A says that a battery ground cable to frame must always be heavily insulate to prevent shorting. technician B says that the battery ground cable often goes to the engine block and to the body as well as the frame. Who is right? a) technician A b) technician B c) both A and B d) neither A nor B
b) technician B
5) Two technicians are trying to locate power feed wires for the vehicles electronic control module. Technician A says to look at a block diagram in the vehicle's service information (Alldata) to find the information. Technician B says that a system wiring diagram in the vehicles service information will provide the location. Who is correct? a) technician A b) technician B c) both technician A and B d) neither technician A nor B
b) technician B
6) during 12-volt and high voltage battery charging, _____. a) electrons flow out of the battery cells. b) the battery changes the electrical energy into chemical energy. c) the battery releases stored energy d) all of the above
b) the battery changes electrical energy into chemcial energy
3) in engine starting mode, a series-parallel hybrid vehicle uses its hybrid control module to energize all of the following components except: a) transmission clutch solenoids b) the brake booster c) the ignition coils d) the fuel pump
b) the brake booster
1) technician A says you can identify a hybrid vehicle by the badging on the engine cover. Technician B says you can identify a hybrid by comparing the vehicles VIN to factory reference information. Who is right? a) A only b) B only c) both A and B d) neither A nor B
c) both A and B
10) two technicians are discussing 12-volt batteries. technician A says that if the outside temperature becomes colder, the battery output power is reduced. technician B says that when the temperature becomes colder, the engine requires more current from the battery to start. Who is right? a) technician A b) technician B c) both A and B d) neither A nor B
c) both A and B
16) multimeter use is being discussed. technician A says a voltmeter can be used to check if a battery is fully charged. technician B says some ohmmeters must be recalibrated to zero before use. Who is right? a) A only b) B only c) both A and B d) neither A nor B
c) both A and B
18) technician A says that an Ohmmeter is the most accurate tool for checking a variable resistor. technician B says that if more than one circuit component does not work, start your tests at the power source for the circuit. Who is right? a) A only b) B only c) both A and B d) neither A nor B
c) both A and B
2) multimeter use is being discussed. technician A says that incorrect meter connections can damage a vehicle electronic components. technician B says that incorrect meter connections can damage the meter itself. who is right? a) A only b) B only c) both A and B d) neither A nor B
c) both A and B
4) a vehicle had a possible blown fuse. technician A says that a test light can check a fuse quickly and easily. technician B says that a voltmeter can be used to test a fuse. who is right? a) A only b) B only c) both A and B d) neither A nor B
c) both A and B
25) two technicians are discussing automotive wiring repair. technician A says that a repaired joint can be protected by the use of electrical tape. technician B says that a repaired joint can be protected by liquid electrical tape. who is correct? a) technician A b) technician B c) both technicians A and B d) neither technician A nor B
c) both technicians A and B
7) two technicians are discussing wire code identification systems in wiring diagrams. technician A says that wire code identification systems provide information about the colors, locations, and sizes of wires in a given circuit. technician B says that wire code identification systems vary from manufacturer to manufacturer. Who is correct? a) technician A b) technician B c) both technicians A and B d) neither technician A nor B
c) both technicians A and B
3) which of the following is not a possible cause of an open circuit? a) broken wire conductor b) blown fuse c) closed switch d) loose connection
c) closed switch
9) a hot wire short to ground produces _____. a) extremely high current resistance b) very low voltage c) extremely high current d) very low current
c) extremely high current
20) all of the following vehicle components draw a parasitic load from the 12-volt battery when the ignition is turned off except _____. a) keyless entry system b) vehicle alarm system c) heating and air conditioning system d) clock and radio memory
c) heating and air conditioning system
12) a voltage drop measurement determines the _____ _____ of a wire or component. a) external amperage b) internal voltage c) internal resistance d) external continuity
c) internal resistance
9) which of the following should not be done when servicing an HV battery? a) using an engine crane to lift the heavy battery b) wrap electrical tape over the battery cable or connectors c) lay tools and test equipment on top of the HV battery packs after removing the battery cover d) wear the proper rubber insulating gloves and use insulated tools
c) lay tools and test equipment on top of the HV battery packs after removing the battery cover
5) which of the following is not a function of the 12-volt battery? a) store huge amounts of electrical energy for future use b) operate the electrical needs of the vehicle during engine cranking or when the engine is not running. c) provide all electrical energy needed while the engine is running. d) act as a capacitor or filter to smooth the DC voltage coming from the alternator
c) provide all electrical energy needed while the engine is running.
22) all of the following are factors associated with a battery load test except _____. a) it measures to overall performance of the battery cells b) it quatifies the current and voltage output of the battery c) the load tester is connected in series to the battery terminals: positive-to-negative and negative-to-vehicle chassis ground d) it tests the battery under full current load
c) the load tester is connected in series to the battery terminals: positive-to-negative and negative-to-vehicle chassis ground
21) wire gages in an automobile generally range from gage 0 to gage _____. a) 18 b) 20 c) 24 d) 30
d) 30
5) a discharged 12-volt vehicle battery can be caused by a(n): a) defective battery b) starting system problem c) engine performance problem d) all of the above
d) all of the above
19) to protect wiring before it gets to the fuse box, a(n) _____ is installed. a) interrupt b) capacitor c) relay d) fuse link
d) fuse link
8) what device is used to prevent the battery from becoming damaged from vibration? a) regulator b) temperature sensor c) heat shield d) hold down
d) hold down
11) on an Ohmmeter display, the symbol "OL" indicates _____. a) zero resistance b) variable resistance c) decreasing resistance d) infinite resistance
d) infinite resistance
1) a 12-volt automotive battery installed in a conventional vehicle has all of the following characteristics except_____. a) it produces direct current b) it store electricity c) it is an electrochemical device d) it recharges whenever the vehicle's engine is turned off.
d) it recharges when the vehicle's engine is turned off.
18) a battery _____ test determines whether current is unintentionally discharging across the top of a 12-volt battery cover. a) jump start b) load c) electrolyte d) leakage
d) leakage
2) which of the following actions is NOT related to vehicle's wiring diagrams? a) recording where specific wiring groups are found on a vehicle based on a wiring harness naming system b) tracing one wire to different locations in a vehicle using a wire color code c) understanding the components and wiring connections of a circuit based on the simplified electrical/electronic symbols d) learning how to employ the tinning process accurately when soldering wires
d) learning how to employ the tinning process accurately when soldering wires
1) technician A says a 12-volt automotive battery has a maximum service life of one year due to the complexity and increased power demand of modern vehicle electronics. Technician B says limiting 12-volt battery maintenance to just inspecting the battery case and cover for damage causes the majority of all 12-volt electric circuit problems. Who is right? a) A only b) B only c) both A and B d) neither A nor B
d) neither A nor B
12) technician A says the maximum acceptable resistance measurement in a 30-foot-long HV power cable is 0,018 ohms. technician B says lithium grease should not be applied to HV power cable connections as it promotes electrical corrosion resulting in bad connections that can burn up cables and components. Who is right? a) technician A b) technician B c) both A and B d) neither A nor B
d) neither A nor B
12) two technicians are discussing 12-volt battery ratings. technician A says that a battery with a CCA rating of 650 is capable of producing 650 amps for 30 minutes if temperatures are zero degrees. technician B says that a battery with a reserve capacity rating of 90 can hold a charge starting at 12.6 volts, going no lower than 10.2 volts, at a discharge rate of 25 amps for 90 seconds. Who is corrects? a) technician A b) technician B c) both A and B d) neither A nor B
d) neither A nor B
19) the current in an automotive taillight circuit needs to be checked. technician A connect a conventional voltmeter in series with the circuit being tested. technician B connects a conventional ammeter in parallel with the circuit being tested. Who is right? a) A only b) B only c) both A and B d) neither A nor B
d) neither A nor B
4) a combination meter in a hybrid's dash display is being discussed. technician A says the hybrid drive ready light illuminates when the vehicle is due for manufacturer-scheduled maintanence that is related to the electric drive system. technician B says that according to manufacturers, the only function of the hybrid power display is to provide directions to the nearest hybrid charging station. Who is right? a) technician A b) technician B c) both A and B d) neither A nor B
d) neither A nor B
5) 4 out of 7 lights in a particular automotive electric circuit are not working. technician A says the most likely cause is the fuse. technician B says the most likely cause is the common ground. Who is right? a) A only b) B only c) both A and B d) neither A nor B
d) neither A nor B
6) the current in a automotive taillight circuit needs to be checked. technician A connects a conventional voltmeter in series with the circuit being tested. technician B connects a conventional ammeter in parallel with the circuit being tested. Who is right? a) A only b) B only c) both A and B d) neither A nor B
d) neither A nor B
8) two technicians are discussing wiring diagrams. technician A says that the vehicle's main wiring diagram is the best option to use to trace the inner wiring of a vehicle's alternator in it's charging system. technician B says that the location grid is used as a language translator for the wiring diagrams from foreign vehicle manufacturers. Who is correct? a) technician A b) technician B c) both technicians A and B d) neither technician A nor B
d) neither technician A nor B
4) what type of wiring diagram uses boxes and symbols to illustrate components and lines to represent wires and hoses for a simplified system or circuit view? a) power distribution diagram b) harness routing diagram c) block diagram d) connector diagram
c) block diagram
14) using a knife or scraper to gouge the metal terminals is the recommended method for cleaning corroded 12-volt battery terminals. T)True F)False
F)False
15) an HV battery has 6 individual packs wired in series. T)True F)False
F)False
16) a high-voltage (HV) battery's greatest advantage is that no reduction of electrical storage or output capacity occurs after years of extended service. T)True F)False
F)False
17) a hybrid vehicle with an HV battery rated at 50kWh can travel at least 150 miles on a single charge in "all electric" mode. T)True F)False
F)False
17) soldering a crimped connector is considered a poor practice. T)True F)False
F)False
21) the red battery cable is usually grounded on the engine block. T)True F)False
F)False
23) secondary wire refers to all vehicle circuits that carry low voltage. T)True F)False
F)False
24) a cold cranking rating indicates how low a temperature a battery can operate in. T)True F)False
F)False
25) an HV battery produces significantly less electricity than a 12-volt lead-acid battery when both are connected to a hybrid vehicle's electric circuits. T)True F)False
F)False
24) all of the following actions should be followed when either charging or testing a high-voltage battery except_____. a) follow the battery charger's and vehicle manufacturer's instructions for safely connecting charger cables to the HV battery b) use ordinary conventianl digital test intruments to measure the voltage and current levels in a high-voltage electric powertrain c) fully charge an HV battery using a plug-in charger station or HV battery charger before testing battery voltage d) set up a safety buffer zone around the vehicle first by moving all carts, tools, and equipment away from the vehicle body
b) use ordinary conventional digital test istruments to measure the voltage and current levels in a high-voltage electric powertrain
18) the unit mil, used to measure wire diameter, is equal to _____. a) 0.1 b) 0.01 c) 0.001 d) 0.0001
c) 0.001
10) a resistance value of one kilohm is equal to _____ ohms. a) 10 b) 100 c) 1000 d) 10,000
c) 1000
14) in automotive technology, the _____ Wire Gage system is used to rate wire size. a) Actual b) Approved c) American d) Alternative
c) American
2) in all-electrice drive mode, a series parallel hybrid vehicle powers the motor-generator with energy provided by the: a) internal combustion engine (ICE) b) ground fault interupter c) HV battery pack d) hybrid control module
c) HV battery pack
6) All of the following statements regarding 12-volt lead-acid battery chargers are true EXCEPT: a) slow charging a battery produces a stronger charger than fast charging b) chargers force electric current back through the battery to restore the charge on the cell plates c) a charger's diode rectifier circuit increases wall outlet voltage (around 120 volts ac) to 240 volts ac to recharge a battery. d) slow chargers are also called trickle chargers, and fast chargers can be called boost chargers.
c) a charger's diode rectifier circuit increases wall outlet voltage (around 120 volts ac) to 240 volts ac to recharge a battery
1) technician A says an open will always stop current in a circuit. technician B says high circuit resistance will normally reduce current in a circuit. who is right? a) A only b) B only c) both A and B d) neither A nor B
c) both A and B
