Quiz 3
List 3 ways to identify if a vehicle has TPMS system.
model year, dash light, stem id
What is the difference between faults when the TPMS warning lamp is on compared with when it is flashing?
on-low, flashing-system fault
Explain the difference between a base and a premium TPMS systems.
base-show tire light, premium-displays tire location and pressure
Describe how the use of wheel speed sensors can detect a tire with low inflation pressure?
compare speeds of all tires. diganol, front to rear and left to right.
All vehicles sold in the United States must have a tire pressure monitoring system, starting with model year ________.
2008
A tire has a recommended pressure of 32 psi. The TPMS should light the lamp when the pressure in this tire reaches ________.
24 psi
The TREAD Act requires that the driver be notified if the tire inflation pressure drops how much?
25%
What are the 2 RF frequencies used in TPMS systems?
315 MHz and 434 MHz
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?
Both technicians
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?
Both technicians
List 2 benefits to the Direct type TPMS system
Can be more accurate than Indirect systems, can still read accurate pressure when aftermarket wheel/tire sizes are put on
Which tire inflation information should be checked to determine the proper tire inflation pressure?
Cold placard inflation pressure
On a General Motors vehicle, sensor position relearning starts with which wheel?
Left front
What type of valve core is used in stem-mounted sensors?
Nickel plated
List 2 benefits to the Indirect type system
No battery to fail, Dismounting and servicing tires have a lower risk and rotations are simpler with a press of a reset button.
What mode does a direct pressure sensor enter when the vehicle is stopped?
Sleep mode
The two basic types of direct TPMS sensors include ________.
Stem mounted and banded
A vehicle with TPMS has 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. Which technician is correct?
Technician A only
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?
Technician A only
A 2015 vehicle with TPMS has a flashing TPMS warning lamp. This means ________.
The TPMS has detected a fault with the system
