Deck 110: Tire Pressure Monitoring Systems

Question 1

A tire with lower than specified inflation pressure could lead to what condition?

A)Reduced fuel economy
B)Increased chances of roadside faults or accidents
C)Reduced tire life
D)All of the above

Answer 1

All of the above

Question 2

Which tire inflation information should be checked to determine the proper tire inflation pressure?

A)32 PSI in all tires
B)The maximum pressure as stated on the sidewall of the tire
C)Cold placard inflation pressure
D)Any of the above

Answer 2

Cold placard inflation pressure

Question 3

Two technicians are discussing tire pressure and temperature. Technician A says that tire pressure will drop 1 PSI for every 10 degrees drop in temperature. Technician B says that the tire pressure will increase as the vehicle is being driven. Which technician is correct?

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

Answer 3

Both technicians A and B

Question 4

Two technicians are discussing the indirect tire-pressure monitoring system. Technician A says that it was used by some vehicle manufacturers on vehicles before the 2008 model year. Technician B says that it uses the speeds of the RF and LR tires and compares the rotating speeds of the LF and RR tires to detect a low tire. Which technician is correct?

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

Question 5

The FMVSS 138 law requires that the driver be notified if the tire inflation pressure drops how much?

A)20%
B)15%
C)25%
D)30%

Question 6

The two basic types of direct TPMS sensors include ________.

A)Rubber stem and aluminum stem
B)Stem mounted and banded
C)Beru and Schrader
D)Indirect and direct

Question 7

What mode does a direct pressure sensor enter when the vehicle is stopped?

A)Storage mode
B)Alert mode
C)Sleep mode
D)Active mode

Question 8

To activate or learn a direct pressure sensor, what does the service technician need to do?

A)Use a handheld tester
B)Enter learn mode and use a magnet
C)Enter learn mode and decrease inflation pressure
D)Any of the above, depending on the vehicle and system

Question 9

What does the "delta pressure method" mean?

A)Activate the sensor so it broadcasts the pressure to the scan tool
B)Using a handheld tester to read the pressure as reported by the sensor
C)Inflating the tire to the specified pressure
D)Change the inflation pressure

Question 10

What type of valve core is used in stem-mounted sensors?

A)Steel
B)Aluminum
C)Nickel plated
D)Brass

Question 11

Technician A says that a tire pressure monitor system that uses a valve-stem-type transmitter is the direct reading type of TPMS. Technician B says that a tire pressure monitoring system that uses a sensor inside and strapped to the wheel is an indirect reading type of TPMS. Which technician is correct?

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

Question 12

A 2008 vehicle with TPMS has a flashing TPMS warning lamp. This means ________.

A)The TPMS has detected a fault with a sensor
B)The vehicle has a flat tire
C)Either A or B
D)Neither A nor B

Question 13

All vehicles sold in the United States must have a tire pressure monitoring system, starting with model year ________.

A)2008
B)2006
C)2004
D)2010

Question 14

When rotating tires on a vehicle equipped with TPMS Technician A says that the sensors will be automatically relearned after driving a few miles. Technician B says that the sensor positions should be relearned, using a scan tool, before returning the vehicle to the customer. Who is correct?

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

Question 15

A vehicle with TPMS has the tire pressure warning light on steady. The owner says that all 4 tires have the correct pressure. Technician A says that the spare tire pressure could be low. Technician B says that a sensor may be bad. Who is correct?

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

Question 16

On a General Motors vehicle, sensor programming starts with which wheel?

A)Left front
B)Left rear
C)Right rear
D)Right front

Question 17

A tire has a recommended pressure of 32 PSI. The TPMS should light the lamp when the pressure in this tire reaches ________.

A)26 PSI
B)27 PSI
C)24 PSI
D)30 PSI

Question 18

Technician A says that the tire pressure can be 5 PSI below specification but not turn on the TPMS warning lamp. Technician B says that vehicles with TPMS do not need to have the tire pressure checked monthly. Who is correct?

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

Question 19

Which one of these valve stems has the TPMS sensor built in?

A)A
B)B
C)Both A and B
D)Not enough information

Question 20

A valve core torque wrench is needed to service TPMS tire valves.

Question 21

To ensure accuracy, a mechanical tire pressure gauge should be used with TPMS.