car stuff
32. Ice crystals are found in the electrolyte. This can be caused by: A. A discharged battery B. Use of tap water C. Reversed battery connections D. Improper hold-downs.
A. A discharged battery
110. When flashing a computer, all of the following are true EXCEPT: A. A battery charger should be connected to the vehicles battery B. Special instructions may be displayed on the scan tool screen during the flash. C. The flash process loads new software programming into the computer. D. The BCM must be removed from the vehicle before it is flashed.
D. The BCM must be removed from the vehicle before it is flashed.
108. Technician A says an ohmmeter that reads 0 ohms means there is no continuity of the circuit or component being tested. Technician B says an infinite reading on the ohmmeter means there is good continuity. Who is correct?
Neither A nor B
109. Technician A says the microprocessor commands actuators by output drivers. Technician B says that outputs are never controlled by supplying voltage to the actuator. Who is correct?
A only
112. Use of wiring diagrams is being discussed. Technician A says a wiring diagram is used to help determine related circuits. Technician B says the wiring diagram will give the exact location of the components in the car.
A only
116. The use of an ammeter is being discussed. Technician A says the ammeter is used to measure current flow. Technician B says the ammeter must be connected in parallel to the circuit being tested Which is correct?
A only
119. Technician A says the field current-draw test determines if there is current available to the field windings. Technician B says a slipping belt can cause a low reading when performing the field current-draw test.
A only
71. The left-rear and right-rear taillights and the left-rear brake light of a vehicle illuminate dimly whenever the brake pedal is pressed; however, the night-rear brake light operates properly. Technician A says the left-rear taillight and brake light may have a poor ground connection. Technician B says that brake light switch may have excessive resistance
A only
45. During a starter current-drawn test, the voltage is 10.2 volts and amperage is above specifications. This could be caused by all of the following EXCEPT: A. Excessive circuit resistance B. Shorted starter windings C. Worn starter motor bushings D. internal engine failure
A. Excessive circuit resistance.
117. The scan tool indicates that an actuator is being turned on and off, however, the actuator does not operate. What is the least likely cause? A. faulty computer B. Open in the control circuit of the actuator C. Open in the ground circuit of the actuator D. Defective actuator device
A. Faulty computer
98. Ground straps are used to: A. Provide a return path to the battery between insulated components. B. Suppress electromagnetic induction C. Both A and B D. Neither A nor B
A. Provide a return path to the battery between insulated components.
107. The magnetic field current of the AC generator is carried in the: A. Rotor B. Diode trio C. rectifier bridge D. Stator
A. Rotor
111. A vehicle is being tested for a draw against the battery with the ignition switch in the OFF position. The specifications state the draw should be between 10 and 30 milliamps. The DVOM reads 0.251 amps. Technician A says this draw is within the specification range. Technician B says the draw is too high
B only
115. Technician A says negative temperature coefficient thermistors reduce their resistance as the temperature decreases. Technician B says positive temperature coefficient thermistors increase their resistance as the temperature increase.
B only
85. Wiring diagrams are being discussed. Technician A says wiring diagrams give the exact location of the electrical components. Technician B says a wiring diagram will indicate what circuits are interconnected, where circuits receive their voltage source, and what color of wires are used in the circuit. Who is correct?
B only
89. Technician A says DTCs will indicate the exact failure in the circuit. Technician B says DTCs will direct the technician to the circuit with a fault in it. Who is correct?
B only
104. An indicator that uses fiber optics is not functioning. This can be caused by: A. A bent fiber-optics cable. B. A faulty light source C. Electromagnetic interference D. None of the above
B. A faulty light source
113. All of the following concerning voltage drop are true EXCEPT: A. All of the voltage from the source must be dropped before it returns to the source. B. Corrosion is not a contributor to voltage drop C. voltage drop is the conversion of electrical energy into another energy form D. Voltage drop can be measured with a voltmeter.
B. Corrosion is not a contributor to voltage drop
3. Which of the following is the correct statement? A. An open means there is continuity in the circuit. B. a short bypasses a portion of the circuit. C. High-amperage draw indicates an open circuit. D. High resistance in a circuit increases current flow
B. a short bypasses a portion of the circuit.
105. Voltage drop testing is being discussed. Technician A says it is possible to calculate voltage drop by testing for available voltage on both sides of the component. Technician B says excessive voltage drop can be on either the power side or the ground side of the circuit. Who is correct?
Both A and B
114. Splicing copper wire is being discussed. Technician A says it is acceptable to use solderless connections. Technician B says acid core solder should not be used on copper wires. Who is correct?
Both A and B
25. Technician A says the service manual (in either paper form or electronic format) is one of the most important and valuable tools for todays technician. Technician B says technical service bulletins (TSBs) provide information concerning fixes for a problem, new part numbers to replace a defective unit, corrections to service manual information, and general information of system operation. who is correct?
Both A and B
30. Technician A says computer-controlled headlights systems can use relays that the BCM operates. Technician B says computer-controlled headlight systems can use high-side drivers to operate the lamps.
Both A and B
48. Replacement of fusible links is being discussed. Technician A says not all open fusible links are detectable by visual inspections. Technician B says to test for battery voltage on both sides of the fusible link to confirm its condition. Who is correct?
Both A and B
17. All of the following are true concerning electrical short, EXCEPT: A. A short can add a parallel leg to the circuit, which lowers the entire circuits resistance. B. A short can result in a blown fuse C. A short decreases amperage in the circuit D. A short bypasses the circuits intended path.
C. A short decreases amperage in the circuit.
47. Referring to the figure shown, how is the blower speed controlled? (look at diagram) A. The A/C-heater controller uses a high-side driver for each speed circuit. B. The totally integrated power module uses PWM to control the ground circuit of the motor. C. A/C-heater controller uses a low-side driver for each speed circuit D. All of the above
C. A/C-heater controller uses a low-side driver for each speed circuit
78. Which statement about electrical currents is correct? A. Alternating current can be stored in a battery B. Alternating current is produced from a voltage and current that remain constant and flow in the same direction. C. Direct current is used for most electrical systems on the automobile D. Direct current changes directions from positive to negative
C. Direct current is used for most electrical systems on the automobile
10. Which of the following describes the operation of the starter solenoid? A. an electromagnetic device that uses movement of a plunger to exert a pulling or holding force. B. Both the pull-in and hold-in windings are energized to engage the starter drive. C. When the starter drive plunger is moved, the pull-in winding is de-energized. D. All of the above
D. All of the above
15. Which of the following statements on HEV safety is correct? A. Always place the high-voltage service plug where someone will not accidentally reinstall it. B. Use a voltmeter set on 400 VDC to determine if the high-voltage system voltage is at 0 volts before servicing. C. Test the integrity of the insulating gloves prior to use. D. All of the above
D. All of the above
95. Which of the following methods can be used to form an electrical current? A. Magnetic induction B. Chemical reaction C. Heat D. All of the above E. None of the above
D. All of the above
118. (Look at diagram) In the starter system shown in Figure 6-34, a voltmeter indicates battery voltage to the input of the neutral safety switch and battery voltage on the output terminal with the transmission in neutral and the ignition switch in the START position. The indicates: A. Normal operation B. The neutral safety switch is working properly C. A faulty starter relay coil winding D. An open neutral safety switch ground
D. An open neutral safety switch ground
43. Testing the fuse is being discussed. Technician A says sometimes a visual inspection of a fuse or fusible link does not reveal that it is open. Technician B says to use a jumper wire to bypass the fuse in order to test the circuit. Who is correct?
A only
76. In a composite headlight: A. The bulb is replaceable B. A cracked lens will prevent lamp operation C. All of the above D. none of the above
A. the bulb is replaceable
41. Technician A says that acid core solder should be used whenever aluminum wires are to be soldered. Technician B says that solderless connectors should not be used if a weather-resistance connection is desired. who is correct?
B only
51. Technician A says during the processing function the computer uses input information and compares it to programmed instructions. Technician B says during the output function the computer will put out control commands to various output devices.
Both A and B
87. Technician A says the EEPROM can be reprogrammed with new files. Technician B says electrostatic discharge can destroy the memory chip.
Both A and B
70. A DVOM is being used to measure current flow. The meter is displaying 85.5 mA. Technician A says this represents 0.0855 amperes. Technician B says the decimal point needs to be moved six points to the left.
A only
18. The amount of voltage output of the AC generator is related to: A. Field strength B. Stator speed C. Number of rotor segments D. All of the above
A. Field strength
1. Battery terminal connections are being discussed. Technician A says when disconnecting battery cables, always disconnect the negative cable first. Technician B says when connecting battery cables, always connect the negative cable first.
A only
14. The starter draw of a vehicle with a slow-crank condition is 75 amps. The battery has a good state of charge and it passed a capacity test. Technician A says that a starting circuit voltage drop test should be performed. Technician B says that the neutral safety switch may have excessive resistance.
A only
52. Technician A says a bent or damaged tone wheel could cause sensor dropout. Technician B says a damaged tone wheel could cause the output voltage to increase.
A only
6. A vehicle with four-wheel ABS has a problem with the right rear wheel locking during heavy braking. Technician A says this could be caused by a bad speed sensor mounted at the wheel. Technician B says the speed sensor mounted at the differential could cause this problem. Who is correct?
A only
62. A customer states that the headlights are brighter than normal and that she has to replace the lamps regularly. Technician A says this can be caused by too high charging system output. Technician B says this can be caused by excessive voltage drop in the circuit
A only
68. The fuse for an A/C blower motor circuit fails after a short period of time. Technician A says that the blower motor may be binding internally. Technician B says that the blower motor ground circuit may have excessive resistance. Who is correct?
A only
77. The best way of determining if a switch is faulty is being discussed. Technician A says to use a jumper wire to bypass the switch and to connect the various circuits controlled by the switch. Technician B says to use an ammeter to test continuity through the switch.
A only
81. Charging system testing is being discussed. Technician A says before attempting to test the charging system, the battery must be checked. Technician B says the state of charge of the battery is not a concern to charging system testing.
A only
86. The selection of the proper size of wire to be used is being discussed. Technician A says the wire must be large enough, for the length required, to carry the amount of current necessary for the load components in the circuit to operate properly. Technician B says temperature has little effect on resistance and it is not a factor in wire size selection.
A only
91. The left turn signals of a vehicle are flashing very slowly; the right turn signals are operating correctly. Technician A says this may be caused by excessive circuit resistance on the left turn signal circuit. Technician B says this may be occurring because someone may have installed bulbs with higher-than-normal wattage rating on the left side of the vehicle. Who is correct?
A only
96. Technician A says it is important that a full battery test series be done before trying to test the starter system. Technician B says the internal condition of the engine has little effect on the operation of the starting system. Who is correct?
A only
23. None of the turn signals operate. The LEAST LIKELY cause of this: A. Burned-out bulbs B. Faulty turn signal switch C. Faulty turn signal flasher D. Open circuit from ignition feed to turn signal
A. Burned-out bulbs
74. Which statement about fiber optics is correct? A. Fiber optics is the transmission of light through several plastic strands that are sheathed by a polymer. B. Fiber optics is used only for exterior lighting. C. Fiber optics can be used only in applications where the conduit can be laid straight. D. All of the above
A. Fiber optics is the transmission of light through several plastic strands that are sheathed by a polymer
65. Referring to the figures shown, the coil for cylinder 4 and the injector for cylinder 3 both fail to function. What is the possible cause? (look at diagram) A. poor connection at splice S134 B. Open in the K13 circuit C. Poor connection in the S185 splice. D. Open in circuit between S184 and PCM C1/38 terminal
A. Poor connection at splice S134
39. 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. All of the following can be the cause EXCEPT: A. The starter motor is drawing too much current B. The glove box light is staying on C. A computer is not powering down D. A relay contact is stuck closed
A. The starter motor is drawing too much current
93. Which of the following statement is most correct? A. Voltage drop testing tests the circuit under load B. An ammeter must be connected in parallel to the load C. An ohmmeter must be connected in series to a circuit D. An insulation meter is used to measure high amperage
A. Voltage drop testing tests the circuit under load
11. A voltmeter that is connected across a starter solenoids battery and motor terminals indicates 12 volts when the ignition key is turned to the START position. A distinct click is heard from the solenoid when this occurs, but the engine does not crank. Technician A says that there is excessive voltage drop in the circuit between the battery and the starter solenoid. Technician B says that the starter solenoid probably needs to be replaced.
B only
19. The starter circuit shown in figure 6-34 has a fully charged battery. The starter relay and solenoid do not operate when the ignition switch is placed in the START position. Technician A says this could be caused by a grounded circuit at terminal 85 of the starter relay. Technician B says this could be caused by an open to terminal 86 of the starter relay. Who is correct? (look at diagram)
B only
22. technician A says the battery provides electricity by releasing free electrons. Technician B says the battery stores energy in chemical form. who is correct?
B only
28. The diagnosis of BCM-controlled output actuators are being discussed. Technician A says if the actuator works during the activation test, the problem is probably associated with a faulty BCM. Technician B says some scan tools can control the operation of output actuators. who is correct?
B only
36. BCM system troubleshooting is being discussed. Technician A says if the BCM "sees" a problem with any of its input sensors or output devices it will always command the "check Engine" lamp to illuminate. Technician B says most diagnostic charts cannot be used to diagnose intermittent problems. Who is correct?
B only
66. Circuit defects are being discussed. Technician A says an open can be only on the ground side of the circuit. Technician B says an unwanted resistance can result from a corroded connector.
B only
75. When a connector is unplugged and applied voltage is measured, the reading is battery voltage. Technician A says this means the circuit is good. Technician B says an open circuit voltage test does not indicate if the circuit has resistance
B only
21. How much total resistance is in a 12-volt circuit that is drawing 4 amperes. A. 0.333 ohm B. 3 ohms C. 4.8 ohms D. 48 ohms
B. 3 ohms
37. The headlights work in the manual position but do not turn on it the AUTO position. What is the most likely cause? A. A bad headlight ground B. A faulty photo cell assembly C. A faulty headlight relay D. A bad headlight relay ground connection.
B. A faulty photo cell assembly
38. Using the figure shown, what would be the LEAST LIKELY cause for fuse 16 blowing? ( Look at diagram) A. A short to ground between terminal 2 of the fuse and terminal 86 of the relay B. A short to ground between terminal 85 of the relay and terminal 47 of the IMP. C. A short to ground at terminal 30 of the relay D. A short to ground in circuit X2
B. A short to ground between terminal 85 of the relay and terminal 47 of the IMP.
92. All of the following statements about servicing the BCM are true EXCEPT: A. Always check voltage supply circuits before replacing the BCM B. Analog voltmeters must be used to test circuit voltage. C. Always check grounds before replacing the BCM D. Turn the ignition switch to the OFF position before disconnecting or connecting components
B. Analog voltmeters must be used to test circuit voltage.
31. When charging a battery: A. Connect a voltmeter across the battery terminals while the battery is charging and keep the charge rate at fewer than 10 volts B. disconnect the negative battery cable before charging to prevent damage to the alternator and computers. C. Charge at an amperage rate of 50% of the CCA rating D. All of the above
B. Disconnect the negative battery cable before charging to prevent damage to the alternator and computers.
55. All of the following could cause premature failure of a composite bulb EXCEPT: A. High charging system voltage B. Excessive bulb circuit ground resistance C. Improper bulb handling D. Cracked lamp housing.
B. Excessive bulb circuit ground resistance
26. The armature: A. Is the stationary component of the starter that creates a magnetic field. B. Is the rotating component of the starter that creates a magnetic field C. carries electrical current to the commutator D. Prevents the starter from engaging if the transmission is in gear.
B. Is the rotating component of the starter that creates a magnetic field.
42. If the scan tool fails to make connection with the BCM, all of the following could be the cause EXCEPT: A. Loss of BCM power ground B. Open actuator circuit C. Open battery feed circuit to the BCM D. Faulty scan tool
B. Open actuator circuit
80. Referring to the wiring diagram in the figures shown, the fog lights do not work when the headlight switch is in the AUTO position, but work in the HEAD and PARKLAMP positions.(look at diagram) What is the most likely cause? A. Open in the headlamp switch resistor between the 3 and 6 positions. B. Open in the resistor below the 3 position of the headlamp switch. C. Short to ground in circuit L80 D. Short to voltage at terminal 4 of headlamp switch
B. Open in the resistor below the 3 position of the headlamp switch
27. ( look at diagram) The voltmeter reading shown here indicates: A. An open in the circuit between the control module and the motor B. A properly operating PTC C. An open PTC D. None of the above
B. Properly operating PTC
13. The purpose of the headlight leveling system is to: A. Reduce the need to align the light beams B. To allow the driver to raise or lower the light beams as vehicle loads change. C. To allow the driver to raise or lower the light beams as the vehicle ascends and descends hills. D. All of the above
B. To allow the driver to raise or lower the light beams as vehicle loads change.
12. The flashing of a computer is done to perform which task? A. Repair hardware problems within the computer-controlled system B. To update the software within the computer to correct or enhance operation. C. Determine if driver habits contribute to EEPROM issues. D. Correct for faulty input signals.
B. To update the software within the computer to correct or enhance operation.
33. Which answer is incorrect concerning a series circuit? A. Total resistance is the sum of all of the resistance in the circuit. B. Total resistance is less than the lowest resistor C. Amperage will decrease as more resistance is added D. All of the above
B. Total resistance is less than the lowest resistor
34. Using figures 8-20 of a BCM-controlled headlight system. What is the most likely cause that the headlights operate dimly on both sides? (look at diagram) A. Poor battery feed connection to the BCM B. Worn or corroded relay contacts C. Faulty BCM D. High resistance in the headlamp ground circuits
B. Worn or corroded relay contacts.
100. Technician A says the largest demand on the battery is when it must supply current to operate the starter motor. Technician B says the current requirements of a starter motor may be over 100 amps.
Both A and B
101. Battery terminology is being discussed. Technician A says grid growth is a condition where the grid grows little metallic fingers that extend through the separators and the short out the plates. Technician B says deep cycling is discharging the battery almost completely before recharging it. Who is correct?
Both A and B
2. The results of a functional test on the automatic headlight system are being discussed. Technician A says when the photo cell is covered and the engine is running, the headlight should turn on within 30 seconds. Technician B says when a bright light is shone onto the photo cell, the headlights should turn off within the specified period of time. Who is correct?
Both A and B
20. Technician A says magnetic pulse generators are commonly used to send voltage signals to the computer concerning the speed of the monitored component. Technician B says an on-off switch sends a digital signal to the computer.
Both A and B
5. A customer says that his battery completely discharges every few days even though he drives his car about 50 miles every day. A test of his charging system is performed and the following measurements are recorded with all accessories turned on: At 1,300 rpm the charging system voltage and amperage are 12.4 volts and 60 amps. A replacement alternator produces the same measurements. Technician A says that there may be excessive electrical demand on the alternator. Technician B says that the charging system output circuit may have excessive voltage drop. Who is correct?
Both A and B
50. Technician A says full fielding means the field winding are constantly energized with full battery voltage. Technician B says the full field test with isolate whether the detected problem lies in the AC generator or the regulator.
Both A and B
61. Preparing connectors is being discussed. Technician A says molded connectors are a one-piece design and cannot be separated for repairs Technician B says to replace the seals when repairing the weather-pack connector
Both A and B
79. The current capacity rating of the battery is being discussed. Technician A says the amount of electrical energy that 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.
Both A and B
8. Terminal connectors are being discussed. Technician A says good terminal connections with resist corrosion. Technician B says the terminals can be either crimped or soldered to the conductor.
Both A and B
82. Technician A says battery polarity must be observed when connecting the battery cables. Technician B says the battery must be secured in the vehicle to prevent internal damage and the possibility of shorting across the terminals if its tips.
Both A and B
88. The troubleshooting of a parallel circuit that contains three dimly lit bulbs is being discussed. A voltmeter that is placed across each of the bulbs indicates 7.2 volts. Technician A says that the power supply that is common to all three bulbs may be faulty Technician B says that the ground terminal that is common to all three bulbs may have excessive resistance.
Both A and B
9. Technician A says the voltage output test is used to make a quick determination concerning whether the charging system is working properly technician B says when testing a charging system, the first step is to perform a visual inspection and preliminary checks of the charging system. Who is correct?
Both A and B
90. The testing of a shorted circuit is being discussed. Technician A says if a fuse blows as soon as it is installed, this indicates a short to ground. Technician B says if the short to ground is on the ground side of the load component but before a grounding switch, the component will not turn off.
Both A and B
94. Charging system regulation is being discussed. Technician A says the regulation of voltage is done by varying the amount of field current flowing through the rotor. Technician B says control of field current can be done either by regulating the resistance in series with the field coil or by turning the field coil or by turning the field circuit on and off. Who is correct?
Both A and B
99. Technician A says there may be a different wiring diagram for each model of a vehicle. Technician B says it may be necessary to use the VIN number to get the correct wiring diagram for the vehicle. Who is correct?
Both A and B
102. All of the following statements about computer memory are true, EXCEPT: A. RAM stores temporary information that can be written to and read by the CPU. B. ROM can be read only by the CPU C. All PROM memory is flashable D. Volatile memory is erased when voltage is removed.
C. All PROM memory is flashable
54. Induction: A. is the magnetic process of producing a current flow in a wire without any actual contact to the wire B. Exists when the magnetic field or the conductor is in motion. C. All of the above D. None of the above
C. All of the above.
103. The purpose of multiplexing is to: A. Increase circuit loads to a sensor. B. Prevent electromagnetic interference. C. Allow computers to share information D. Prevent multiple system failures from occurring.
C. Allow computers to share information
16. A customer states that his or her tail lamps are not functioning. When testing the lamp operation, it is noted that the tail/stop lamps and the turn signals do not operate. During the diagnostic routine, the technician also notices that the backup lamps are also not functioning. All fuses test good. Using all of the writing diagrams with indicated test voltages in the figures shown, what is the most likely cause of this condition? (Look at the diagrams) A. G301 is open B. G302 is open C. Faulty integrated power module D. Open in the Z918 circuit
C. Faulty integrated power module.
4. The following are components of the starting system EXCEPT: A. The flywheel ring gear B. Neutral safety switch C. Harmonic balancer D. Battery
C. Harmonic balancer
56. The light-emitting diode (LED): A. Emits light when it is reverse-biased. B. Has a variable turn-on voltage. C. Has a light color that is defined by the materials used to construct the diode. D. Has a turn-on voltage that is usually less than standard diodes.
C. Has a light color that is defined by the materials used to construct the diode.
57. All of the following concerning the use of jumper wires are true EXCEPT: A. The jumper wire should be fused B. The jumper wire can be used to bypass a switch C. The jumper wire can be used to bypass the load device D. The jumper wire can be used to supply an alternate ground circuit
C. The jumper wire can be used to bypass the load device
46. The charging system: A. Provides electrical energy to operate the electrical system while the engine is running. B. Restores the energy to the battery after starting the engine C. Use the principle of magnetic induction to generate electrical power D. All of the above
D. All of the above
83. Which of the following electrical troubleshooting routines is in the correct sequence? A. Study the electrical diagram, confirm the concern, locate and repair the fault, and test the repair B. Study the electrical diagram, confirm the concern, locate and repair the fault, and test the repair. C. Confirm the concern, study the electrical diagram, test the repair, and locate and repair the fault. D. Confirm the concern, study the electrical diagram, locate and repair the fault, and test the repair.
D. Confirm the concern, study the electrical diagram, locate and repair the fault, and test the repair.
24. All of the following are true concerning the use of an ohmmeter EXCEPT: A. Connect the ohmmeter with the circuit power off. B. An "OL" indicates that the reading is over limits. C. 0.00 indicates no resistance D. Connect the test leads of the meter in series to the load.
D. Connect the test leads of the meter in series to the load
7. The most likely cause of the automatic headlights failing to activate in low ambient light conditions is: A. A faulty ignition switch B. Camera angle alignment out of specifications. C. Burned-out headlight elements. D. Faulty headlight switch
D. Faulty headlight switch
29. The headlights work normally, except they do not turn on in the automatic mode. What is the LEAST LIKELY cause? A. Faulty photo cell B. Faulty amplifier C. Faulty headlight switch D. Faulty headlights relay
D. Faulty headlights relay
59. Which of the following could result in battery overheating and eventual premature failure? A. Open field circuit. B. shorted stator windings C. open diode D. High resistance in the voltage regulator sensing circuit
D. High resistance in the voltage regulator sensing circuit.
35. Diagnostic trouble codes are being discussed. Technician A says hard code failures are those that have occurred in the past but were not present during the last BCM test of the circuit. Technician B says intermittent codes are those that were detected the last time the BCM tested the circuit.
D. Neither A nor B
73. Which of the following is correct? A. Analog signals are either high/low, on/off, or yes/no B. Digital signals are infinitely variable within a defined range C. All of the above D. None of the above
D. None of the above
44. (look at diagram) Using the circuit illustrated in figure 9-3, the computer has set a fault code for the sense circuit being high. Technician A says this can be caused by a short to chassis ground in the return circuit. Technician B says the signal circuit may be shorted to the return circuit. Who is correct?
Neither A nor B
49. The fuse for the parking lights is open. Technician A says the blown fuse may be due to high resistance in one of the parking light bulb connectors. Technician B says the fuse probably wore out due to age. Who is correct?
Neither A nor B
53. A vehicle is towed into the shop due to a no-start (no-crank) condition. The headlights are turned on, and when the ignition key is placed in the START position, the lights remain bright but the starter does not crank the engine. Technician A says that the starter may be binding internally. Technician B says that the battery may be discharged. Who is correct?
Neither A nor B
63. Test results of the voltage output tests are being discussed. Technician A says if the charging voltage is too high, there may be a loose or glazed drive belt. Technician B says if the charging voltage is too low, the fault might be a grounded field wire from the regulator (full fielding) Who is correct?
Neither A nor B
67. Speed sensor are being discussed. Technician A says the timing disc is stationary and the pickup coil rotates in front of it. Technician B says the number of pulses produced per mile increases as rotational speed increases.
Neither A nor B
69. Relay testing is being discussed. Technician A says that it is acceptable during the test sequence to bypass the relay control coil terminals with a fused jumper wire. Technician B says that the voltage drop across the relay load contact terminals is checked with the relay control circuit de-energized. who is correct?
Neither A nor B
84. During a starter current-draw test the following results were noted: A. Voltage-9.4 volts B. Current draw-363 amps. the specifications for the maximum current draw are 180 amps Technician A says the test results indicate that the battery may be defective and should be tested. Technician B says the test results indicate a faulty neutral safety start switch circuit. who is correct?
Neither A nor B
97. Technician A says a test light is ideal for checking for voltage on a low-current, low-power circuit. Technician B says to use an analog multimeter to test computer-controlled circuits. Wo is correct?
Neither A nor B
64. Which of the following statements is correct? A. An insulator is capable of supporting the flow of electricity through it. B. A conductor is not capable of supporting the flow of electricity C. All of the above D. None of the above
None of the above
40. Charging a battery with a battery charger is being discussed. Technician A says that battery-charging voltage should never exceed 1.5 volts Technician B says that a battery can be considered fully charged when its open circuit voltage exceeds 12.1 volts after it has been stabilized. Who is correct?
Technician A
