TPMS System Description - Overview
WARNING: This page is about a different car, the 2019 Honda Fit, 2018 Honda Fit, 2017 Honda Fit, 2016 Honda Fit, and 2015 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.
System Outline
The indirect Tire Pressure Monitoring System (TPMS) establishes a baseline tire pressure reading using the wheel speed sensors while, indirectly, monitoring tire pressure in order to detect pressure loss in any of the four tires. The low tire pressure/TPMS indicator turns on appear when the tire pressure of any tire, or tires, falls below the specified threshold or a system malfunction is detected.
The system configuration is shown below. The system is controlled by the VSA modulator-control unit.