Deck 59: Accessory Circuits

Question 1

The owner of a vehicle equipped with cruise control complains that the cruise control often stops working when driving over a rough or bumpy road. Technician A says that the brake switch may be out of adjustment. Technician B says that a defective servo unit is the most likely cause. Who is right?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Answer 1

Technician A only

Question 2

An open wire at point "A" would have what result?

A)The rear tilt motor only will not function.
B)None of the motors will function.
C)Not enough information
D)The SEAT circuit breaker will open due to high current flow.

Answer 2

None of the motors will function.

Question 3

A vehicle equipped with heated and cooled seats is in the shop for service. What special service may be required for the seats?

A)resetting the seat timer
B)Checking the heating/cooling element filter
C)Changing the Peltier elements
D)Refilling the seat coolant fluid

Answer 3

Checking the heating/cooling element filter

Question 4

Cruise control systems (without electric throttle) use what type of actuator?

A)Vacuum motor
B)Stepper motor
C)Either A or B
D)Neither A nor B

Question 5

A defective APP sensor will cause ________.

A)Malfunction of the cruise control system
B)Malfunction of the electronic throttle control
C)Both A and B
D)Neither A nor B

Question 6

When checking the operation of a rear-window defogger with a voltmeter ________.

A)The voltmeter should indicate decreasing voltage when grid is tested across width of glass
B)The voltmeter should be set to read AC volts
C)Voltage should be available anytime at the power side of the grid because the control circuit just completes the ground side of the heater grid circuit
D)The voltmeter should read close to battery voltage anywhere along the grid

Question 7

The temperature of heated seats is regulated by ________.

A)a heat sensor on top of the under-seat carpet
B)a seat cushion temperature sensor and seat module
C)thick seat insulation
D)None of these

Question 8

In an electronically controlled cruise control system, what component is used to monitor vehicle speed?

A)RPM sensor
B)Engine speed sensor
C)Vehicle speed sensor
D)Generator speed sensor

Question 9

Which of the following actions will deactivate cruise control operation?

A)Applying accelerator pedal
B)Applying the brakes
C)Releasing accelerator pedal
D)Driving up a steep hill

Question 10

Power window systems use ________ motors.

A)Stepper
B)Unidirectional
C)Reversible
D)Servo

Question 11

Technician A says that many power windows and power door locks use a reversible, permanent-magnet motor with a built-in circuit breaker. Technician B says that the control switches and relays direct the current through the motor(s). Who is right?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 12

Technician A says that a rear-window defogger can self-regulate the current flow. Technician B says that as the temperature of the grid decreases, its resistance decreases, reducing current flow. Who is right?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 13

Power windows are being discussed. Technician A says that when one control wire is disconnected all the power windows will fail to operate. Technician B says that a defective ground connection at the master control switch could cause the failure of all power windows. Who is right?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 14

A typical 6 way power seat uses ________.

A)6 separate grounded electric motors only
B)2 electric motors and a 3-way direct acting transmission
C)6-9 separate PM non-grounded electric motors
D)1-3 motors (depending on manufacturer)