General Information

Tire Pressure Monitoring
C1123 Sensor 3 Battery Voltage Low - General Information

Component Location





General Description

The TPMS is the acronym for Tire Pressure Monitoring System. This system monitors the pressure in the tires. If the pressure drops below a certain amount, the TPMS ECU will turn on the warning lamp to notifying the driver. This system consists of TPMS ECU(or TPMS Receiver) and the TPMS sensors. A TPMS sensor is installed at each wheel. The sensor measures the air pressure, the temperature of the tire, and the senors battery and then transmits it to the TPMS ECU. The communication from TPMS sensors is done via RF(Radio Frequency) at a given frequency.

DTC Description

The TPMS ECU monitors the voltage of the sensor's battery and if it is below 2.2 V, the TPMS ECM will set this DTC.

DTC Detecting Condition