Exam 2

A battery is being replaced in a vehicle. Technician A says that the replacement battery should have at least 75 percent of the original battery CCA rating for the vehicle. Technician B says that the replacement battery should not exceed the physical dimensions of the original battery. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

B

A digital clock is being diagnosed for losing the correct time each time the ignition is shut off. Technician A says that the main ground connection for the clock could be disconnected. Technician B says that the "keep alive" fuse could be blown. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

B

A generator is being replaced. Technician A uses an air tool to remove the fastening nut from the charging output wire. Technician B disconnects the negative battery cable prior to removing the generator. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

B

A vehicle electronic instrument cluster lighting intermittently goes dark after being driven for long periods. Technician A says the problem could be a shorted LED. Technician B says the problem could be a faulty lighting driver in the instrument cluster assembly. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

B

A vehicle has a problem with the delay windshield wiper operation. The wipers work on low speed and high speed but do not work at all when the delay function is chosen. What is the most likely cause of this problem? A. Washer motor B. Potentiometer in the delay switch C. Wiper motor low speed brush D. Wiper motor high speed brush

B

All of the following components are parts of the starter control circuit EXCEPT: A. Park/ neutral switch B. Positive battery cable C. Starter relay D. Ignition switch

B

All of the statements about performing voltage drop tests on electrical circuits are EXCEPT: A. The voltmeter leads should be connected on each end of the circuit to be tested. B. The meter should be connected in series with the circuit. C. The circuit should be energized when performing a voltage drop test. D. The digital meter should be set to the DC volts scale.

B

One section of a rear defogger does not clear the glass when in operation. The rest of the glass gets cleared normally when the rear defogger is used. Technician A says that the rear defogger relay could be defective. Technician B says that one of the heat strips could have a break in it. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

B

The left rear park light bulb is inoperative. The turn signal and stop lamp bulbs work normally on that side, Technician A says that a faulty ground on the left rear could be the cause. Technician B says that a faulty bulb could be the cause. Who is correct? A. A only B. B only C. Both A B D. Neither A nor B

B

Which of the following details would be the LEAST LIKELY item to be located on a wiring diagram? A. The circuit number of a wire B. A flowchart for troubleshooting an electrical problem C. The amp rating of the fuse that supplies the circuit D. The color of a wire

B

A late-model luxury vehicle is being diagnosed for a problem in the driver's side heated seat. The seat hot at all times regardless of the seat heater switch position. Technician A that a shorted seat heater relay could cause this problem. Technician B says that a grounded circuit between the seat heater relay and the body control module (BCM) could be the cause. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

A vehicle is being diagnosed for inoperative turn signals. The hazard lights work correctly. Technician A says that a faulty turn signal flasher could be the cause. Technician B says that a faulty multi-function switch could be the cause. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

A vehicle is in the repair shop for a battery problem. Technician A says that the battery voltage should be 12.4 volts before performing a battery load test. Technician B says that a battery can be accurately tested with a digital tester if it has at least 12 volts. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

A vehicle is in the repair shop for a dead battery. During the diagnosis, an excessive parasitic draw is found. Technician A says that removing one fuse at a time is an effective method of locating the unwanted draw. Technician B says that a "stuck closed" trunk light switch could be the cause. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

A vehicle with a charging problem is being repaired. The charging output wire received damage and needed to be repaired. Technician A says to use weather resistant connectors when making wire repairs in the engine compartment. Technician B says that solder and heat shrink is an acceptable method of wire repair in the engine compartment. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

A vehicle with a six cylinder engine is being diagnosed for a starting problem. A starter current draw test was performed and the amperage was 310 amps. Technician A says that this reading could be caused by a weak battery. Technician B says that this reading could be caused by tight starter bushings. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

Technician A says that a poor ground connection will cause reduced current flow in an electrical circuit. Technician B says that water corrosion in the wiring will cause reduced current flow in an electrical circuit. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

Technician A says that a scan tool can be used to retrieve a trouble code from the body control module. Technician B says that a scan tool can be used to view live sensor data from the body control module. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

Technician A says that an oscilloscope shows voltage signals represented as lines on a digital screen. Technician B says that an oscilloscope can be used to view live sensor readings directly at each sensor. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

Technician A says that audio speakers can be checked by testing the resistance with an ohmmeter. Technician B says that an antenna lead wire can be checked by testing the resistance with an ohmmeter. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

Technician A says that batteries can be recharged more quickly by using a high setting on the battery charger. Technician B says that batteries can be more thoroughly charged by using a low setting on the battery charger. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

Technician A says that the body control module (BCM) communicates with electronic driver information centers. Technician B says that the power train control module (PCM) communicates information to the electronic driver information center. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

Technician A says that the hazard flasher on late-model vehicles can be replaced without disconnecting the vehicle battery. Technician B says that the turn signal flasher and hazard flasher are combined into one assembly on some late-model vehicles. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

Technician A says that the starter solenoid provides the linear movement to push the starter drive gear into the flywheel. Technician B says that the starter solenoid acts as a magnetic switch to provide a current path for the positive circuit to reach the starter motor. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

Technician A states that the scan tool receives data from the data bus network. Technician B states that a bi-directional scan tool can send functional messages over the data bus network. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

Technician A uses an alignment tool to aim the headlights on a late model vehicle. Technician B uses the built-in alignment bubbles on the headlamp housings to aim the headlights on some late model vehicles. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

The power door lock only works intermittently on the passenger front door. All of the other doors work normally. Technician A says that the wires could be damaged at the point near where the door connects to the vehicle body. Technician B says that the passenger door lock actuator could have a poor electrical connection. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

The temperature light does not illuminate during the bulb test or when the vehicle overheats. Technician A says that a faulty instrument cluster unit could be the cause. Technician B says that a blown bulb could be the cause. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

The windshield washer pump motor runs continuously while the ignition switch is on. Technician A says that the multi-function switch could be shorted. Technician B says that the wiper control module could be defective. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

C

Which of the following conditions would LEAST LIKELY cause a fusible link for the power windows to burn up? A. A motor with a shorted winding B. A power-side short to ground C. High resistance in the switch contacts D. A binding window regulator

C

A vehicle is having the wiper motor replaced. All of the following steps will need to be performed EXCEPT: A. Remove the wiper arms. B. Remove the cowl panel. C. Remove the wiper motor fasteners. D. Remove the vehicle battery from the engine compartment.

D

An electronic chime control module needs to be replaced on a late model vehicle. Technician A says that these modules are located in the engine compartment. Technician B says that the body control module (BCM) has to be reprogrammed after replacing the chime control module. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

D

Technician A says that a broken wire will often cause a fuse to blow due to high current flow. Technician B says that a corroded wire connection will often cause a fuse to blow due to high current flow. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

D

The back-up light switch is being tested on a vehicle. Technician A says that the back-up light switch is often combined with the turn signal switch. Technician B says that the back-up light switch is located near the rear light housing. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

D

The keyless control module is being replaced on a late-model vehicle. A says that all of the transmitters will work with the new controller without having to be reprogrammed. Technician B says that the power door locks will have to be cycled multiple times to reprogram the keyless entry control module. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

D

What is the LEAST LIKELY cause for low charging current during a charging output test? A. Worn brushes B. Faulty rectifier bridge C. Shorted stator winding D. Faulty charging gauge

D

What type of sending unit does the oil pressure gauge use? A. Rheostat B. Potentiometer C. Photo resistor D. Piezo resistor

D

Which of the following conditions would be the LEAST LIKELY cause of an undercharged battery? A. Worn generator brushes B. Loose fastener at the charge wire connection C. Faulty voltage regulator D. Battery cable that is oversized

D

Which of the following devices is LEAST LIKELY to be used as an input to an electronic gauge assembly? A. Thermistor B. Piezo resistor C. Body control module D. Light emitting diode (LED)

D

A resistance test was performed on a closed brake switch and the result is .857 megaohms. Technician A says that the switch is faulty because the reading is beyond the specifications. Technician B says that the switch has 857 ohms of resistance. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

A

A vehicle is being diagnosed for inoperative brake lights. Technician A says that a blown stop light fuse could be the problem. Technician B says that a shorted headlight switch could be the cause. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

A

A vehicle is being diagnosed with a problem of the door ajar alarm sounding intermittently. Technician A says that the striker adjustment of all doors should be checked. Technician B says that the door jam switches should be replaced. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

A

A vehicle needs to be jumpstarted with an auxiliary power supply. Technician A says that safety glasses should always be worn when working around batteries. Technician B says that the positive connection should be made at the starter solenoid. Who is Correct? A. A only B. B only C. Both A and B D. Neither A nor B

A

A vehicle with heated seats has a problem on the driver's side. The heated seat only gets mildly warm when the switch is turned on. Technician A says that the driver's side heated seat relay could have burnt contacts. Technician B says the driver's side heated seat relay could have an open coil. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

A

Technician A says that a shorted armature can cause elevated starter current draw. Technician B says that a corroded battery cable terminal can cause elevated starter current draw. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

A

Technician A says that the negative battery cable should be removed prior to disconnecting the electrical connections at the starter. Technician B says that the fasteners should be removed prior to removing the electrical connections at the starter. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

A

Technician A says that tugging on a fusible link is an acceptable method of quickly testing it. Technician B says that a fusible link can be tested with an ohmmeter without disconnecting it from the vehicle. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

A

The drive belt system should be inspected during regular intervals. Technician A says that a serpentine drive belt tensioner should snap back after releasing pressure on it. Technician B says that the drive belt should be replaced at the first sign of cracks on the back side of it. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B

A

Voice activation commands are used on some luxury vehicles to interact with all of the following accessory systems EXCEPT: A. Power windows B. Audio system C. Navigation system D. Mobile phone system

A

Which cruise control system component is most likely being serviced in the figure above? A. Clock spring/ribbon wire B. Servo C. Control module D. Cancel switch

A