TPMS System Description - Overview
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System Outline
The Indirect Tire Pressure Monitoring System (TPMS), establishes a baseline tire pressure reading using the wheel speed sensors and indirectly monitors tire pressure 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.