General Information

Electronic Stability Control
C1235 Primary Pressure Sensor-Electrical - General Information

Component Location





General Description

The pressure sensor, installed in the HECU, senses the brake oil pressure to judge a driver's brake intention when the ESC program is operated. If pressure of master cyclinder is applied to pressure sensor, the strain of the piezo element is changed and then the resistance of bridge circuit is changed according to the changed strain. Therefore this changed resistance changes the output voltage of bridge circuit and the output voltage changes linearly. The sensor output is an analog signal in proportion to the supply voltage, and the HECU recognizes a pressure value according to signal ratio about supply voltage.

DTC Description

A failure is detected if the output signal voltage of the pressure sensor is out of specified range.

DTC Detecting Condition





Diagnostic Circuit Diagram