Prepare for the Automotive Service Technician Period 1 exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Direct tire pressure monitoring systems measure tire pressure using sensors located where?

Direct TPMS works by reading the air pressure directly from inside each tire with a sensor mounted in the wheel assembly. These sensors are typically integrated into the valve stem or mounted inside the wheel, one sensor per tire, and they wirelessly send the readings to the TPMS control module. Because each tire has its own sensor, the system can detect an underinflated tire on any corner of the vehicle and alert you accordingly. This per-tire sensing is what distinguishes direct TPMS from methods that infer pressure from other signals, such as wheel speed.

Direct TPMS works by reading the air pressure directly from inside each tire with a sensor mounted in the wheel assembly. These sensors are typically integrated into the valve stem or mounted inside the wheel, one sensor per tire, and they wirelessly send the readings to the TPMS control module. Because each tire has its own sensor, the system can detect an underinflated tire on any corner of the vehicle and alert you accordingly. This per-tire sensing is what distinguishes direct TPMS from methods that infer pressure from other signals, such as wheel speed.