Batteries Test

What is the current in a 12-volt circuit with a 6-ohm resistor connected series?

2 amps

The reference voltage (VERF) sent to most sensor ranges from _____ to _____ volts.

5.0 - 9.0

2 types of lane departure system

A and B

Technician A disconnects the batter ground cable prior to replacing a fusible link. Technician B uses a fusible link that is larger [lower gauge number] than the circuit it protects. Who is correct?

A only

Technician A says diodes are used to rectify the voltage produced from an AC generator. Technician B says a zenerdiode protects circuit components from voltage spikes. Who is correct?

A only

Technician A uses the vehicle's built-in bubble level to adjust headlight vertical aim. Technician B uses a screen at ten feet from the vehicle to aim headlights. Who is correct?

A only

Also called an alternator, a generator that produces alternating current.

AC generator

Standard sealed beams are typically filled with ______.

ARGON

What type of test equipment is needed to perform a charging system current output test?

An Ammeter

The park distance control system warns the driver that the vehicle is close to an obstacle by _____.

An audible signal that increases in frequency as the vehicle gets closer.

The stoplight switch is normally mounted on the _____

BRAKE PEDAL ARM

mechanical shield or shutter plate is a feature of

Bi-Xenon

Circuit breakers are being discussed. Technician A says after the circuit breaker is tripped, it must be reset by pressing a button on the breaker. Technician B says some circuit breakers automatically reset after the power has been turned off for a few seconds. Who is correct?

Both

Technician A says a Hall-effect switch uses a semiconductor, permanent magnet, and trigger wheel to measure shaft speed. Technician B says an engine coolant temperature sensor is basically a thermistor. Who is correct?

Both

Technician A says a lamp may contain only one filament. Technician B says some lamps contain two filaments. Who is correct?

Both

tech a blinking headlights can be caused by a self resetting circuit breaker. tech b blinking can be caused by loose electrical connection

Both

Sulfation of battery plates can cause

Both "lower specific gravity" and "reduced reserve power in cold weather"

A six-way power seat is NOT operating in any switch position. Technician A says to check the circuit breaker. Technician B says there may be excessive resistance in the electrical circuit. Who is correct?

Both A and B

Which method for testing for a battery's state of charge can be used on maintenance free batteries

Built in Hydrometer, open circuit voltage test

On a PCM-controlled AC generator, system voltage is controlled by varying the _____ of the current applied to the field coil.

Duty Cycle

NTC thermistor used in

Engine Coolant Tempt

A parallel circuit can only have one load on each leg.

F

Voltage stays constant in a closed electrical circuit, but the amperage drops as it powers a load.

F

Because of memory affect, nickel-metal-hydride [Ni-MH] type batteries are never used in hybrid vehicles

False

Cranking problems can be created if oversize battery cables are installed.

False

Does a analog gauges use digital display of numbers?

False

Flash-to-pass systems blink the high beams on and off when the turn signal lever is moved to change lanes to pass another vehicle.

False

Permanent magnet starting motors use strong magnets surrounded by field coils to produce extra turning torque.

False

Testing voltage regulator by full fielding alternator

False

The electrolyte in a battery cannot freeze, even if the battery is discharged and the temperature drops below 0 degrees Fahrenheit

False

The starter must never operate for more than sixty seconds at a time and should rest for two minutes between extended cranking.

False

while the engine is cranked a voltmeter placed between positive battery post and positive post of the starter reads less than .01 volt. the cause would be

Normal

Protects the starter motor from spinning too rapidly

Overrunning Clutch

What are most intermittent wipers controlled by ?

Potentiometer

A simple on/off switch with one input terminal and one output is a _____type switch.

SPST [single pole, single throw]

An ohmmeter can be used to check for continuity.

T

Electromotive force is measured in volts.

T

High resistance in a circuit causes decreased current flow

T

Most horns are controlled by a relay.

T

The schematic for a relay is typically shown on the outside of the relay.

T

Vehicle lighting systems are regulated by federal laws.

T

Tech B says Positive batter post is largaer than negative. Tech B disconnects Positive cable first. Who is correct

Tech A only

Technician A says a battery strap or carrier should be used whenever a battery is lifted. Technician B says when a battery is removed, the positive cable should be disconnected first. Who is correct?

Tech A only

Technician A uses a solution of baking soda and water to clean a battery. Technician B uses soap and water.

Tech A only

A bad diode can cause an abnormal whirring noise in the AC generator.

True

A battery is an electrochemical device that converts chemical energy into electrical energy.

True

Battery hold-downs reduce the amount of vibration and help increase the life of a battery

True

Concealed [pop-up] headlights were often operated by vacuum on older vehicles.

True

Dirt on antenna can interfere with reception

True

EEPROM allows stored memory to be electircally changed

True

Fluid lever in washer fluid will close the circuit and " LOW fluid" will turn on

True

In OBII IS diagnostic routine

True

Most modern vehicles have a warning system that alerts the driver when the driver's door is opened when theheadlights or parking lights are turned on.

True

Most starter motors have 2-6 brushes

True

On a top post battery the positive terminal is slightly larger than the negative

True

The output of an AC generator can be as high as 250 volts if it is not controlled.

True

The specific gravity of the electrolyte decreases as the battery is discharged.

True

The typical CCA rating for passenger car or light truck is between 300 and 600 amps

True

The voltage regulator controls voltage by varying the field current through the rotor.

True

twisted wires do not increase interference

True

when a circuit protection device opens due to higher than normal current, a short is the likely cause

True

Gauges typically receive how many volts

about 5 Volts

power windows use

all of the above

which is a type of diode zener clamp

all of the above

common service for anti-theft system

both adding and replacing keys

2 speed permanent magnets

brushes

customer complains headlights are always. what do you check first?

check for articles placed on top of dash

Starting in model year 2008, what type of communication protocol is required for diagnostics?

class C (CAN)

Which of the following is not a type voltage generating sensor?

coolant temperature sensor (CTS)

Corrosion on or near the battery must be minimized because,

corrosion increases resistance, destroy hold down straps, and corrosion on battery cover can create a path for battery to slowly discharge

most common problem with defrosters

damage to grids on window

changes AC to Dc

diodes

A momentary contact switch is used to operate the _____.

horn

The four basic computer functions that work together in a computer system:

input, processing, output, and storage.

part swtich for windshield wiper motor is

inside motor.

allows the control module to share data

multiplexing

Technician A says when there is a complete path through the electrical circuit, the circuit is said to be open. Technician B says when the circuit path is broken or interrupted the circuit is said to be closed. Who is right?

neither A nor B

When load testing a battery, the load applied to the battery should be _____.

one half the CCA rating

Rear defrosters generally have a relay with a timer to allow the defogger to ______.

operate for only a specific amount of time

low cranking rpmcranking voltage measures 9.1v at the starter solenoid terminal. what chould be done next

perform a cranking current test

some antitheft systems use in the ignition key a

resistor

throttle position sensor is a

rotary potentiometer

An engine coolant temperature sensor is an example of a(n) ______.

thermistor

A battery should be checked and charged as needed before performing any starting system tests.

true

Permanent magnets do not need brushes

true

DLC connector located

under dash on driver

The best way to test a battery cables and terminal for excessive resistance is by ______ testing

voltage drop