General Information

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

Component Location





General Description

The pressure sensor, installed in the HECU, sense the brake oil pressure to judge driver's brake intention when ESC is operating.
If pressure of master cyclinder is applied to pressure sensor, the strain of the piezo element is changed and then the resistance of brige circuit is chanded according to changed strain.
Therefore this changed resistance changes output voltage of brige circuit and output voltage changes linearly.
The sensor output is a analog signal in proportion to 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