Question 1

A sunroof is opening slower than normal and appears to be "jerky" in its operation. The most likely cause of this problem is:

Accepted Answer

A)  A shorted armature or field coil in the sunroof motor. 
B) A stuck open limit switch. 
C) A stuck closed limit switch. 
D)  A stuck OPEN switch. 
A)  A shorted armature or field coil in the sunroof motor. 
B) A stuck open limit switch. 
C) A stuck closed limit switch. 
D)  A stuck OPEN switch. C

Question 2

Horn relays are sometimes included in the horn circuit for which of the following reasons?

Accepted Answer

A) To allow the use of two horns in the circuit. 
B) To decrease the amount of current needed by the horns. 
C) To decrease the amount of current that flows through the horn switch. 
D)  To allow the horn button to be placed on the end of a stalk on the steering column. 
A) To allow the use of two horns in the circuit. 
B) To decrease the amount of current needed by the horns. 
C) To decrease the amount of current that flows through the horn switch. 
D)  To allow the horn button to be placed on the end of a stalk on the steering column. C

Question 3

What is the LEAST likely cause of slow windshield wiper operation?

Accepted Answer

A)  Binding mechanical linkage. 
B) Excessive resistance in the motor's ground circuit. 
C) Short to power at the low-speed brush. 
D)  Worn common brush. 
A)  Binding mechanical linkage. 
B) Excessive resistance in the motor's ground circuit. 
C) Short to power at the low-speed brush. 
D)  Worn common brush. C

Question 4

The power seats do not move fore or aft. The technician notices that the motor attempts to move the seat then stops. The least likely cause of this is:

Accepted Answer

A) A binding track 
B) A short in the motor armature 
C) A faulty PTC 
D)  An obstruction under the seat 
A) A binding track 
B) A short in the motor armature 
C) A faulty PTC 
D)  An obstruction under the seat

Question 5

All of the following can cause the horn to sound continuously EXCEPT:

Accepted Answer

A)  Circuit between relay and horn shorted to power. 
B) Short to ground between relay and horn. 
C) Horn switch contacts stuck closed. 
D)  Short to ground between the relay coil and the horn switch. 
A)  Circuit between relay and horn shorted to power. 
B) Short to ground between relay and horn. 
C) Horn switch contacts stuck closed. 
D)  Short to ground between the relay coil and the horn switch.

Question 6

How do depressed-park windshield wiper systems generally park the blades?

Accepted Answer

A) By turning off B+ to the motor 
B) By applying B+ to the motor 
C) By ungrounding the switch 
D)  By reversing the motor direction 
A) By turning off B+ to the motor 
B) By applying B+ to the motor 
C) By ungrounding the switch 
D)  By reversing the motor direction

Question 7

Which component within the wiper motor ensures that when the motor is turned off the wiper arms will be brought to the bottom position?

Accepted Answer

A) Wiper switch 
B) Park contacts 
C) Recycle relay 
D)  None of these choices 
A) Wiper switch 
B) Park contacts 
C) Recycle relay 
D)  None of these choices

Question 8

An electric window with a two wire motor operates only in one direction. Which of the following could cause this problem?

Accepted Answer

A) Faulty window switch 
B) Faulty window motor 
C) Faulty system circuit breaker 
D)  All of these choices 
A) Faulty window switch 
B) Faulty window motor 
C) Faulty system circuit breaker 
D)  All of these choices

Question 9

Sound from the horn is generated by:

Accepted Answer

A)  Heat causing the diaphragm to vibrate. 
B) Vibrating a column of air. 
C) Pulse-width modulating of the horn relay. 
D)  All of these choices. 
A)  Heat causing the diaphragm to vibrate. 
B) Vibrating a column of air. 
C) Pulse-width modulating of the horn relay. 
D)  All of these choices.

Question 10

When diagnosing a memory seat system, you find that the driver's seat does not move at all. The first procedure you should perform is:

Accepted Answer

A) To check the system for codes. 
B) A visual inspection. 
C) To check for voltage to the motor. 
D) To replace the defective seat motor. 
A) To check the system for codes. 
B) A visual inspection. 
C) To check for voltage to the motor. 
D) To replace the defective seat motor.

Question 11

What do the two-speed wiper motors generally use to achieve the two speeds?

Accepted Answer

A) Cams 
B) Reduction gears 
C) Speed-control brushes 
D) A combination of all of the above 
A) Cams 
B) Reduction gears 
C) Speed-control brushes 
D) A combination of all of the above

Question 12

Which statement about permanent magnet wiper motors is true?

Accepted Answer

A)  The more armature windings between the high-speed and common brushes results in less magnetism in the armature and lower CEMF. 
B) The lower the CEMF in the armature, the greater the armature current. 
C)  The fewer windings between the low-speed and common brushes results in increased magnetism and higher CEMF. 
D)  All of these choices. 
A)  The more armature windings between the high-speed and common brushes results in less magnetism in the armature and lower CEMF. 
B) The lower the CEMF in the armature, the greater the armature current. 
C)  The fewer windings between the low-speed and common brushes results in increased magnetism and higher CEMF. 
D)  All of these choices.

A sunroof is opening slower than normal and appears to be "jerky" in its operation. The most likely cause of this problem is:

Horn relays are sometimes included in the horn circuit for which of the following reasons?

What is the LEAST likely cause of slow windshield wiper operation?

The power seats do not move fore or aft. The technician notices that the motor attempts to move the seat then stops. The least likely cause of this is:

All of the following can cause the horn to sound continuously EXCEPT:

How do depressed-park windshield wiper systems generally park the blades?

Which component within the wiper motor ensures that when the motor is turned off the wiper arms will be brought to the bottom position?

An electric window with a two wire motor operates only in one direction. Which of the following could cause this problem?

Sound from the horn is generated by:

When diagnosing a memory seat system, you find that the driver's seat does not move at all. The first procedure you should perform is:

What do the two-speed wiper motors generally use to achieve the two speeds?

Which statement about permanent magnet wiper motors is true?

Introduction to Automotive Electrical and Electronic Systems Safety

Basic Theories Special Tools and Procedures

Electrical and Electronic Components Basic Electrical Troubleshooting and Service

Wiring and Circuit Diagrams Wiring Repair and Reading Circuit Diagrams

Automotive Batteries Battery Diagnosis and Service

Starting Systems and Motor Designs Starting System Diagnosis and Service

Charging Systems Charging System Testing and Service

Lighting Circuits Lighting Circuits Repair and Diagnosis

Introduction to the Body Computer Body Computer System Diagnosis

Computer Input Sensor Diagnostic Routines

Vehicle Communication Networks Vehicle Multiplexing Diagnostics

Advanced Lighting Circuits Advanced Lighting Systems Diagnosis and Service

Instrumentation and Warning Lamps and Warning Lamp System Diagnosis and Repair

Radio Frequency and Infotainment Systems Servicing Radio Frequency and Infotainment Systems

Passive Restraint Systems Servicing Passive Restraint Systems

Vehicles With Alternative Power Sources Hybrid and High-Voltage System Service

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Exam 14: Accessories Electrical Accessories Diagnosis and Repair

A sunroof is opening slower than normal and appears to be "jerky" in its operation. The most likely cause of this problem is:

Horn relays are sometimes included in the horn circuit for which of the following reasons?

What is the LEAST likely cause of slow windshield wiper operation?

The power seats do not move fore or aft. The technician notices that the motor attempts to move the seat then stops. The least likely cause of this is:

All of the following can cause the horn to sound continuously EXCEPT:

How do depressed-park windshield wiper systems generally park the blades?

Which component within the wiper motor ensures that when the motor is turned off the wiper arms will be brought to the bottom position?

An electric window with a two wire motor operates only in one direction. Which of the following could cause this problem?

Sound from the horn is generated by:

When diagnosing a memory seat system, you find that the driver's seat does not move at all. The first procedure you should perform is:

What do the two-speed wiper motors generally use to achieve the two speeds?

Which statement about permanent magnet wiper motors is true?

Introduction to Automotive Electrical and Electronic Systems Safety

Basic Theories Special Tools and Procedures

Electrical and Electronic Components Basic Electrical Troubleshooting and Service

Wiring and Circuit Diagrams Wiring Repair and Reading Circuit Diagrams

Automotive Batteries Battery Diagnosis and Service

Starting Systems and Motor Designs Starting System Diagnosis and Service

Charging Systems Charging System Testing and Service

Lighting Circuits Lighting Circuits Repair and Diagnosis

Introduction to the Body Computer Body Computer System Diagnosis

Computer Input Sensor Diagnostic Routines

Vehicle Communication Networks Vehicle Multiplexing Diagnostics

Advanced Lighting Circuits Advanced Lighting Systems Diagnosis and Service

Instrumentation and Warning Lamps and Warning Lamp System Diagnosis and Repair

Radio Frequency and Infotainment Systems Servicing Radio Frequency and Infotainment Systems

Passive Restraint Systems Servicing Passive Restraint Systems

Vehicles With Alternative Power Sources Hybrid and High-Voltage System Service

Filters