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?

Question

Quizplus · Accepted Answer

Both technicians are correct. Technician A is correct in stating that indirect tire-pressure monitoring systems were used by some vehicle manufacturers on vehicles before the 2008 model year. Technician B is correct in describing how the system works, by comparing the rotational speeds of the tires to detect a low tire, as a tire with lower pressure will have a smaller diameter and thus rotate faster than a tire with proper inflation.

Two Technicians Are Discussing the Indirect Tire-Pressure Monitoring System