Question 1

If an immobilizer-related fault occurs, what symbol is likely to be displayed on the dash?

Accepted Answer

A)  "IM" 
B)  The "check engine" light 
C)  A padlock symbol 
D)  The "service engine soon" light 
A)  "IM" 
B)  The "check engine" light 
C)  A padlock symbol 
D)  The "service engine soon" light C

Question 2

What does the battery in the key fob power?

Accepted Answer

A)  The remote keyless entry (RK
E)  transmitter 
B)  Both the remote keyless entry and the immobilizer circuit 
C)  The shock sensor 
D)  The immobilizer circuit 
A)  The remote keyless entry (RK
E)  transmitter 
B)  Both the remote keyless entry and the immobilizer circuit 
C)  The shock sensor 
D)  The immobilizer circuit A

Question 3

How is data transmitted between the key and the steering column (lock cylinder)?

Accepted Answer

A)  Transferred from the key to the BCM using a small transmitter in the key 
B)  Transmitted from the key to the vehicle using the battery inside the key 
C)  By inductive coupling 
D)  By electrical contacts inside the lock cylinder 
A)  Transferred from the key to the BCM using a small transmitter in the key 
B)  Transmitted from the key to the vehicle using the battery inside the key 
C)  By inductive coupling 
D)  By electrical contacts inside the lock cylinder C

Question 4

What is the purpose and function of an immobilizer system?

Accepted Answer

A)  Only allows the use of the ignition key that is properly matched to the lock cylinder 
B)  Prevents the vehicle from starting or running if the correct key is not used 
C)  To prevent entry inside the vehicle 
D)  Requires that the driver enter a password to start the vehicle 
A)  Only allows the use of the ignition key that is properly matched to the lock cylinder 
B)  Prevents the vehicle from starting or running if the correct key is not used 
C)  To prevent entry inside the vehicle 
D)  Requires that the driver enter a password to start the vehicle

Question 5

Immobilizer diagnostic trouble codes are often found under what area?

Accepted Answer

A)  Engine-related "P" codes 
B)  Body-related "B" codes 
C)  Chassis related "C" codes 
D)  Either B or C 
A)  Engine-related "P" codes 
B)  Body-related "B" codes 
C)  Chassis related "C" codes 
D)  Either B or C

Question 6

Tamper mode is when what occurs?

Accepted Answer

A)  The engine will start and run as normal except that the security warning light on the dash will be on all the time. 
B)  The security lamp flashes about once per second if the system detects a bad key, lock cylinder, or security-related wiring problem. The engine will not start or if it does start, will not continue to run. 
C)  The security dash lamp comes on for 2 to 5 seconds for a bulb check when the ignition is turned on, then goes out. 
D)  Any of the above, depending on the make, model, and year of the vehicle. 
A)  The engine will start and run as normal except that the security warning light on the dash will be on all the time. 
B)  The security lamp flashes about once per second if the system detects a bad key, lock cylinder, or security-related wiring problem. The engine will not start or if it does start, will not continue to run. 
C)  The security dash lamp comes on for 2 to 5 seconds for a bulb check when the ignition is turned on, then goes out. 
D)  Any of the above, depending on the make, model, and year of the vehicle.

Question 7

Diagnosing an immobilizer requires the use of ________ and accurate service information.

Accepted Answer

A)  a locksmith 
B)  jumper wires 
C)  a key code writing device 
D)  a scan tool 
A)  a locksmith 
B)  jumper wires 
C)  a key code writing device 
D)  a scan tool

Question 8

A shock sensor is part of the vehicle ________ system.

Accepted Answer

A)  speed sensor 
B)  fuel injection 
C)  content theft protection 
D)  immobilizer 
A)  speed sensor 
B)  fuel injection 
C)  content theft protection 
D)  immobilizer

Question 9

If an immobilizer-related module is replaced, what needs to be performed?

Accepted Answer

A)  The key(s) will need to be replaced to match the new module. 
B)  The module will need to be programmed with the security information to be able to function with the existing key. 
C)  All of the immobilizer-related modules need to be replaced at the same time so they will all work together. 
D)  Any of the above, depending on the make, model, and year of vehicle. 
A)  The key(s) will need to be replaced to match the new module. 
B)  The module will need to be programmed with the security information to be able to function with the existing key. 
C)  All of the immobilizer-related modules need to be replaced at the same time so they will all work together. 
D)  Any of the above, depending on the make, model, and year of vehicle.

Question 10

The vehicle security transceiver antenna may be located ________.

Accepted Answer

A)  under the passenger seat 
B)  on the rear window defogger grid 
C)  in the console 
D)  at the key lock cylinder 
A)  under the passenger seat 
B)  on the rear window defogger grid 
C)  in the console 
D)  at the key lock cylinder

Question 11

To view immobilizer codes a ________ must be used.

Accepted Answer

A)  generic scan tool 
B)  factory scan tool 
C)  factory test light 
D)  Any of these, depending on the vehicle 
A)  generic scan tool 
B)  factory scan tool 
C)  factory test light 
D)  Any of these, depending on the vehicle

Question 12

A typical Chrysler immobilizer system is called ________.

Accepted Answer

A)  Passlock 
B)  SKIS 
C)  VATS 
D)  PATS 
A)  Passlock 
B)  SKIS 
C)  VATS 
D)  PATS

Question 13

What will happen if a fault occurs in the immobilizer system when the engine is running?

Accepted Answer

A)  The security light will come on and the engine will shut off 
B)  The engine will run at reduced power 
C)  The security light will come on but the engine will not be shut off 
D)  None of these 
A)  The security light will come on and the engine will shut off 
B)  The engine will run at reduced power 
C)  The security light will come on but the engine will not be shut off 
D)  None of these

Question 14

An immobilizer fault may occur if the ________.

Accepted Answer

A)  key is exposed to any kind of magnetic field 
B)  key gets wet 
C)  key is dropped onto a hard surface 
D)  Any of the above 
A)  key is exposed to any kind of magnetic field 
B)  key gets wet 
C)  key is dropped onto a hard surface 
D)  Any of the above

Question 15

A typical Ford immobilizer system is called ________.

Accepted Answer

A)  Passlock 
B)  VATS 
C)  PATS 
D)  SKIS 
A)  Passlock 
B)  VATS 
C)  PATS 
D)  SKIS

Question 16

To prevent an unauthorized scanning of the vehicle security ID number, the code ________ with each use of the system.

Accepted Answer

A)  changes 
B)  is reversed 
C)  is erased 
D)  is incremented by 1 
A)  changes 
B)  is reversed 
C)  is erased 
D)  is incremented by 1

Question 17

What can occur if the immobilizer system is not working as designed?

Accepted Answer

A)  The engine cranks but does not start 
B)  The engine starts but then almost immediately stalls 
C)  No crank condition (the starter does not operate) 
D)  Any of the above 
A)  The engine cranks but does not start 
B)  The engine starts but then almost immediately stalls 
C)  No crank condition (the starter does not operate) 
D)  Any of the above

Question 18

A General Motors Passkey III system has the transponder located in the ________.

Accepted Answer

A)  cylinder coil 
B)  head of the key 
C)  lock magnets 
D)  key fob 
A)  cylinder coil 
B)  head of the key 
C)  lock magnets 
D)  key fob

Question 19

Some Ford security system keys can be programmed using ________.

Accepted Answer

A)  one original key 
B)  a lock programmer 
C)  two programmed keys 
D)  a door lock key 
A)  one original key 
B)  a lock programmer 
C)  two programmed keys 
D)  a door lock key

Question 20

The immobilizer module communicates with the PCM using ________.

Accepted Answer

A)  a serial data line 
B)  FM radio waves 
C)  a battery sender 
D)  the key fob 
A)  a serial data line 
B)  FM radio waves 
C)  a battery sender 
D)  the key fob

Exam 12: Immobilizer Systems

If an immobilizer-related fault occurs, what symbol is likely to be displayed on the dash?

What does the battery in the key fob power?

How is data transmitted between the key and the steering column (lock cylinder)?

What is the purpose and function of an immobilizer system?

Immobilizer diagnostic trouble codes are often found under what area?

Tamper mode is when what occurs?

Diagnosing an immobilizer requires the use of ________ and accurate service information.

A shock sensor is part of the vehicle ________ system.

If an immobilizer-related module is replaced, what needs to be performed?

The vehicle security transceiver antenna may be located ________.

To view immobilizer codes a ________ must be used.

A typical Chrysler immobilizer system is called ________.

What will happen if a fault occurs in the immobilizer system when the engine is running?

An immobilizer fault may occur if the ________.

A typical Ford immobilizer system is called ________.

To prevent an unauthorized scanning of the vehicle security ID number, the code ________ with each use of the system.

What can occur if the immobilizer system is not working as designed?

A General Motors Passkey III system has the transponder located in the ________.

Some Ford security system keys can be programmed using ________.

The immobilizer module communicates with the PCM using ________.

The Diagnostic Process

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