electrical 2
what type of voltage is the output at the "Bat" terminal of the AC generator A)DC B)AC C)Three phase unrectified D)none of the above
A)DC
the ___ test measures the electrical load of the starter when it is activated A)current draw B)battery C)voltage drop D)compression
A)current draw
pressure switches will usually use a ___ that works against a calibrated spring or other form of tension. A)diaphram B)electromagnet C)lever D)piezoelectric device
A)diaphram
when the engine is running, the ___spins the rotor inside the stator windings A)drive belt B)battery C)armature Dsolenoid
A)drive belt
flashing a BCM is being discussed. tech a says a battery charger must be connected to maintain 12 volts during the entire flashing procedure. tech b says that most reprogramming procedures can be reverted to the orignal programming. who is correct A) tech a B)tech b C)both a and b D)neither a or b
A)tech a only
where is the output of an AC generator created A)the stator B)the rotor C)the housing D)the brushes
A)the stator
a scan tool can be used to help diagnose charging system problems on most modern vehicles A)true B)false
A)true
a starter should draw less current once it is spinning A)true B)false
A)true
if an automatic transmission vehicle will start in any gear, the netural saftey switch is probably at fault A)true B)false
A)true
if the parking brake is applied while the engine is running, the daytime running light feature is turned off. A)true B)false
A)true
thebrain of the computer is the processing unit A)true B)false
A)true
there should be a 2 minute wait between cranking attempts A)true B)false
A)true
vehicles equipped with manual transmissions have a clutch saftey switch A)true B)false
A)true
voltage regulation is controlled by the PCM on many vehicles today A)true B)false
A)true
to reduce vehicle downtime to a minimum, many repair facilities ___ rebuild starters. A-do not B-always C-routienly D-advise the customer to
A-do not
if there is a leak that allows antifreeze from the cooling system to enter the cylinder, the cylinder can fill to such a level that the piston is unable to muve upward. this condition is refered to as ___ A-hydrostatic lock B-coolant flooding C-no crank D-starter ring freeze
A-hydrostatic lock
most motion and speed senors use a(n) ___ as the sensing element or sensed target to detect rotational or linear speed. A-magnet B-photo cell C-accelerometer D-ammeter
A-magnet
the ___ is the brain of the computer A-microprocessor B-A/D converter C-program D-interface circut
A-microprocessor
the input voltage to the AC generator is called ___ voltage A-sense B-system C-increasing D-charging
A-sense
tech a says a full battery test series should be done before testing the starting system. tech b says the internal condition of the engine has little to do with the operation of the starting system. who is correct. A-tech a B-tech b C-both a and b D-neither a or b
A-tech a
the ring gear teeth of a flywheel are badly worn in various spots. tech a says this could cause poor drve gear engagement. tech b says this could cause a lower than normal starter current draw. who is correct A-tech a B-tech b C-both a and b D-neither a or b
A-tech a
(CAN) bus diagnostics is being discussed. tech a says a scan tool is used to access the central gateway module for the bus network. tech b says if the scan tool can communicate with the central ateway module, then the CAN C circuit is at fault. who is correct A-tech a B-tech b C-both a and b D-neither a or b
A-tech a only
tech a says the netural saftey switch is used on vehicles with automatic transmissions. tech b says a netural saftey switch is used on vehicles with manual transmissions. who is correct.
A-tech a only
tech a says when replacing the battery in the vehicle, you should connect the negative cable last. tech b says when replacing the battery, you should always use new leads. who is correct A-tech a B-tech b C-both a and b D-neither a or b
A-tech a only
a charging system is used to restore electrical power to the battery that was used during engine starting. A-true B-false
A-true
hard code failures are those that were detected in the last time the BCM tested the circut. A-true B-false
A-true
power mirrors are considered an electrical accessory A-true B-false
A-true
saftey glasses are the best choice to be worn for protection when working with battery acid and refrigerants. A-true B-false
A-true
one form of feedback is for the computer to monitor ___ as a switch, relay or other actuator is activated. A-voltage B-resistance C-capacitors D-gauges
A-voltage
the ___ is used to make quick determination about wether the charging system is working properly. A-voltage output B-visual inspection C-no load test D-load test
A-voltage output
DTCs that are assigned to the vehicles body system and control modules are called A)u_codes B)b_codes C)k_codes D)p_codes
B)b_codes
a tighter than normal engine will decrease the amperage draw of the system A)true B)false
B)false
illuminated entry systems turn on the courtesy lights after the doors are opened A)true B)false
B)false
modern automatic headlight dimming systems use rheostats to control the beam switching A) true B)false
B)false
switches are the computers output devices A)true B)false
B)false
a vehicle is being cheched for a no-crank condition. a voltmeter placed across the contacts of the starter solenoid indicates 12 volts when the ignition is turned to the "start" position. a distinct "click" noise is heard coming from the solenoid at the same time. tech a says the starter motor may have an open armatureor field current. tech b says the starter solenoid needs to be replaced. who is correct? A)tech a B) tech b C)both a and b D)neither a or b
B)tech b
a ___ is a special tool that connects to the computers connectors to allow the technician to test circuts, sensors, and actuators by providing test points. A-body computer B-breakout boc C-circut breaker D-backprobe
B-breakout box
a netural safety switch will have continuity through it when the transmission is in drive or reverse. A-true B-false
B-false
corrosion is not a contributor to voltage drop A-true B-false
B-false
slower than normal cranking speed will result in lower than normal amperage A-true B-false
B-false
the vehicle lighting system only includes the lights on the exterior of the vehicle A-true B-false
B-false
to find the resistance of a circut, divide the amperage by the voltage A-true B-false
B-false
the starter drive is the part of the starter motor that engages the armature to the engine___ A-starter solenoid B-flywheel ring gear C-commutator D-clutch
B-flywheel ring gear
some ___ provide a vehicle module scan function that will query all of the modules on the bus to respond and then list all those that didnt reply. A-bus systems B-scan tools C-PCMs D-OBDII vehicles
B-scan tools
tech a says that most manufacturers use stand-alone electrical systems. tech b says that in a networked system a fault in one component can cause several symptoms. who is correct. A-tech a B-tech b C-both a and b D-neither a or b
B-tech b only
all of the following could prevent a starter solenoid from engaging, EXCPET A)an open in the netural saftey switch B)a shorted clutch saftey switch C) a bent armature shaft D)an open ignition switch
C)a bent armature shaft
a technician says when replacing a halogen headlight bulb, touching the bulb with your fingers can shorten the life of the bulb. tech b says the ignitor of an HID headlight provides the initial 10,000 to 25,000 volts to jump the gap. who is correct A)tech a B) tech b C) both a and b D) neither a or b
C)both a and b
most modern vahicles will use a starter ___ in conjunction with a starter motor-mounted solenoid to control starter motor operation A)recombination battery B)series circut C)relay D)hold-in winding
C)relay
symptoms of ___ include slow cranking,discharged battery,low instrument panel ammeter or voltmeter readings,and charge indicator lamp on. A)overcharging B)excessive current drain C)undercharging D)belt wear
C)undercharging
(CAN) bus diagnostics is being tested. tech a says the first step is to verify the customers complaint. tech b says you must determine which bus network is at fault. who is correct. A-tech a B-tech b C-both a and b D-neither a or b
C-both a and b
tech a says before performing a voltage output test, a visual inspection and prelimenary check of the charging system should be done. tech b says a voltage output test will indicate if the charging system is working properly. who is correct A-tech a B-tech b C-both a and b D-neither a or b
C-both a and b
tech a says most manufacturers now use a system of vehicle communication called multiplexing. yech b says multiplexing allows control modules to shar information. who is correct. A-tech a B-tech b C-both a and b D-neither a or b
C-both a and b
tech a says the netural saftey switch can apply a ground to the starter relay. tech b says the netural saftey switch can also control the backup lights on a vehicle. who is correct. A-tech a B-tech b C-both a and b D-neither a or b
C-both a and b
the principal of ____ is used to convert electrical energy into mechanical energy in a starter motor. A-inertia B-flux density C-electrmagnetism D-ignition
C-electromagnetism
today there are very few electrical systems still ___ A-networked B-battery operated C-independent D-complex
C-independent
the starting saftey switch is also called a___ A-remote operated switch B-manual overide switch C-netural start switch D-single pole, double throw switch
C-netural start switch
which of the following is an actuator A)a motor B)a relay C)a solenoid D)all of the above
D)all of the above
the starting system is designed to change the energy in the _____ into mechanical energy. A)cranking motor B)solenoid C)starter drive D)battery
D)battery
on some turn signal systems a ___ is used to open and close the turn signal circut at a set rate A)rheostat B)diode C)LED D)flasher
D)flasher
which of the following devices have the fastest activation time A)halogen B)neon C)tungsten D)led
D)led
which of the following represents the correct sequence of steps that may need to be preformed when testing a starting system A)visual inspection,battery cond.,voltage drop,starter draw B)visual inspection,voltage drop,battery cond.,starter draw C)Battery cond.,visual inspection,,starter draw,voltage drop D)visual inspection,battery cond.,starter draw,voltage drop
D)visual inspection,battery cond.,starter draw,voltage drop
which of the following would NOT be considered a computer input A-throttle position sensor B-magnetic pulse generator C-park/netural switch D-EGR vent solenoid
D-EGR vent solenoid
intermittent faults with sensors usually set a(n) ___ A-enviormental data record B-freeze frame C-DTC D-all of the above
D-all of the above
what should you do before turning on a battery charger A-check the polarity of the battery B-clean the battery cable ends C-connect the leads D-all of the above
D-all of the above
which of the following is a true statement A-electrical accessories provide additional saftey and comfort B-the lighting system consists of all the lights used on the vehicle C-anti theft systems are deterrant systems designed to scare off would-be thieves by sounding alarms and/or disabeling the ignition D-all of the aboce
D-all of the above
which of the following sstatements is true of a solenoid A-they use the electromagnetic field of a coil to pill a plunger into the coil B-they are generally used to engage the starter motor with the flywheel C-they operate with a mobile plunger and usually do a mechanical job D-all of the above
D-all of the above
what should be done first to the system when a 0.9 volt drop is observed between battery positive terminal and the starter solenoid with the engine cranking A-install a larger battery B-nothing,it is acceptable C-replace cables or component between the voltmeter leads D-clean the battery cable connections and retest
D-clen battery cable connections and retest
if a malfunction results in improper system operation, the company may minimize the afftects by using ___ A-by-pass B-breaking C-shut down D-fail safe
D-fail safe
to ___ a computer means to remove the exisiting programming nad overwrite it with new software. A-reset B-feed C-override D-flash
D-flash
a park/netural switch is being tested. when the transmission is placed in the park position, the voltage at the switch is 12 volts. when the transmission is shifted into reverse, the voltage drops to 0.0 volts. tech a says the park/netural switch needs to be replaced. tech b says the ground for the park/netural switch is open. who is correct. A-tech a B-tech b C-both a and b D-neither a or b
D-neither a or b
tech a says when testing the charging system, the state of the battery is not a concern. tech b says to test the battery only if the charging system test fails. who is correct. A-tech a B-tech b C-both a and b D-neither a or b
D-neither a or b
tech a says when testing the voltage output, if the charging system voltage is too high, the cause could be an open field wire from the regulator. tech b says a loose or glazed drive belt could be the cause of too high charging voltage. who is correct. A-tech a B-tech b C-both a and b D-neither a or b
D-neither a or b
the ___ test will isolate the problem area and determine wether the starter motor, solenoid, or control circut is at fault. A-battery B-circut C-lab scope D-quick
D-quick
