Quiz 7 Ch 21,23 and 24

Using the bulb table below, which bulb is brightest?

1157

Headlights can be aimed by using ________.

A bubble level and An aiming screen

Electronic indicators alert the driver when ________.

A fault is detected in the airbag (SRS) system and Traction control is turned off

A brake warning lamp on the dash remains on whenever the ignition is on. If the wire to the pressure differential switch (usually a part of the combination valve or built into the master cylinder) is unplugged, the dash lamp goes out. Technician A says that this is an indication of a fault in the brake hydraulic system. Technician B says the problem is probably due to a stuck parking brake cable switch. Who is right?

A only

A weak-sounding horn is being diagnosed. Technician A says that a poor ground connector at the horn itself could be the cause. Technician B says that an open relay can be the cause. Which technician is correct?

A only

Technician A says that metal-type window tinting can affect the navigation system. Technician B says that most navigation systems require a monthly payment for use of the GPS satellite. Who is right?

A only

How does changing tire diameter affect the speedometer reading?

A smaller diameter tire causes the speedometer to read faster than the actual speed and more than the actual mileage on the odometer

What controls the operation of a pulse-wiper system?

A solid-state (electronic) module

The light indicating a problem with the ABS system is colored ________.

Amber

Technician A says that backup sensors use LEDs to detect objects. Technician B says that a backup sensor will not work correctly if the paint is thicker than 0.006 inch. Who is right?

B only

The horn switch on the steering wheel of a vehicle that uses a horn relay ________.

Grounds the horn relay coil

Which of these is a supplemental display that projects the vehicle speed and sometimes other data, such as turn signal information, onto the windshield?

Head-up display (HUD)

Refer to the wiring schematic. A burned open R2 in the blower resistor pack would have what effect on the blower operation?

Hi or Med Hi only

Which pitch horn is used for a single horn application?

High pitched

A rain-sense wiper system uses a rain sensor that is usually mounted ________.

Inside of the windshield at the top

Which of these electronic display devices uses electrodes and polarized fluid to create numbers and characters?

LCD (Liquid Crystal Display)

Electrical feedback is usually a result of ________.

Lack of a proper ground

A backup camera system can may be integrated with the vehicle ________ system

Navigation

Two technicians are discussing a fuel gauge on a General motors vehicle. Technician A says that if the ground wire connection to fuel tank sending unit becomes rusty or corroded, the fuel gauge will read lower than normal. Technician B says that when the power lead to the fuel tank sending unit is disconnected from the tank unit and grounded (ignition on), the fuel gauge should go to empty. Who is right?

Neither technician

What would be the result if G302 was disconnected?

No high beam indicator light

A customer complains that every time the lights are turned on in the vehicle, the dash display dims. Which of these is the MOST likely cause which of these conditions?

Normal behavior for VTF dash display

The General Motors rear park assist (RPA) system senses ________ behind the vehicle.

Objects

The electronics in the rain-sense wiper module can detect the presence of rain drops under various lighting conditions. Which of these solid state components is used to sense rain drops?

Photo Diode, Laser LED or Infrared light sensor

The parking brake switch is in a circuit that illuminates a(n) ________ color light in the instrument cluster.

Red

A vehicle with a lane departure warning system uses sensors or cameras to monitor ________.

Road line markings

An oil pressure warning lamp is usually controlled by which of these devices?

Sensor unit

Flasher units are being discussed. Technician A says that a DOT (Department of Transportation) approved flasher unit should be used for turn signals. Technician B says that a parallel (variable-load) flasher will function for turn signal usage, although it will not warn the driver if a bulb burns out. Who is right?

Shift interlock, ABS brakes or Cruise control

A defective blower motor draws more current than a good motor because ________.

The CEMF decreases

A defective taillight or front park light bulb could cause ________.

The lights-on chime to sound if the brake pedal is depressed, The dash lights to come on when the brake lights are on or The turn signal indicator on the dash to light when the lights are turned on

Which of these is a type of electric motor designed to rotate in small steps based on the signal from a vehicle computer?

stepper motor

Flasher units are being discussed. Technician A says that a DOT (Department of Transportation) approved flasher unit should be used for turn signals. Technician B says that a parallel (variable-load) flasher will function for turn signal usage, although it will not warn the driver if a bulb burns out. Who is right?

Both

Technician A says that LCDs may be slow to work at low temperatures. Technician B says that the LCD dash display can be damaged if pressure is exerted on the front of the display during cleaning. Who is right?

Both

Technician A says that high-intensity discharge (HID) headlights are brighter and have a blue tint. Technician B says that one defective turn signal bulb can cause the turn signal on the affected side to stop blinking (flashing). Who is right?

Both

Technician A says that most digital and analog (needle-type) dash gauges use variable resistance sensors. Technician B says that permanent-magnet (PM) generators produce an AC signal and are used for vehicle speed and wheel speed sensors. Who is right?

Both

The trade number also identifies the size, shape, number of filaments, and amount of light produced. This is measured in which of these units?

Candlepower

The OnStar system operates by using GPS data and ________.

Cellular telephone service

Interior overhead lights (dome lights) are operated by door jamb switches that ________.

Complete the power side of the circuit or Complete the ground side of the circuit

What type of headlight assembly is shown in the below illustration?

Composite

If the oil pressure warning lamp on a General Motors vehicle is on all the time, yet the engine oil pressure is normal, the problem could be ________.

Defective (shorted) oil pressure sending unit (sensor) or Wire shorted to ground between sending unit (sensor)and dash warning lamp

To determine if a windshield wiper problem is electrical or mechanical, the technician should ________.

Disconnect the linkage from the windshield wiper motor and operate the windshield wiper

Most modern vehicles use a(n) ________ for an input to the engine temperature display.

ECT sensor

The HID lighting system consists of all of these components, EXCEPT ________.

Filament

The sending unit in a typical fuel gauge uses which of these devices?

Float

An important input to the backup camera system comes from the ________, which signals the backup camera when the transmission is shifted into reverse.

Transmission range switch