Quiz 3

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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


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