General Information

Tire Pressure Monitoring
C1212 First Speed Input Fault - General Information

Component Location





General Description

The TPMS is the acronym for Tire Pressure Monitoring System. This system monitors the pressure of the tire and when it drops below a certain pressure, the TPMS ECU makes the warning lamp turn on for notifying the driver. This system consists of TPMS ECU (or TPMS Receiver), Initiators and TPMS sensors. The TPMS ECU gets signals of the vehicle speed and then uses those for auto-learning and judgment for DTC.

DTC Description

The TPMS ECU monitors signals of vehicle speed and if it is detected as a fault in the vehicle speed signal 1 circuit, this DTC is set.

DTC Detecting Condition





Diagnostic Circuit Diagram