General Information

Tire Pressure Monitoring System

C1665 Initiator supply circuit short to ground - General Information

Component Location





General Description

The TPMS system is the shorten word of 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. Among components of TPMS system, the initiator is only applied to TPMS High F43specifications. And its role is to control each TPMS sensor via the low frequency. This initiator enable a driver to see which tire has a low pressure.

DTC Description

The TPMS ECU monitors the power of initiator and if it is detected as a short circuit to ground, this DTC is set.

DTC Detecting Condition





Diagnostic Circuit Diagram