Tech A says the direct TPMS measures tire pressure, sometimes via a sensor that is installed inside each wheel. Tech B says the indirect TPMS measures the air pressure indirectly by monitoring individual wheel speeds and other signals available in the vehicle using the ABS (antilock brake system) wheel speed sensors. Who is right?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Tech A is correct because direct TPMS uses sensors inside each wheel to measure tire pressure. Tech B is correct because indirect TPMS estimates tire pressure by monitoring wheel speeds using ABS sensors.

Tech a Says the Direct TPMS Measures Tire Pressure, Sometimes