General Information

Component Location





General Description

The one pressure sensor, installed in the master cylinder, sense the brake oil pressure to judge driver's brake intention when ESC is operating.
There are movable and unmovable ceramic disk in pressure sensor.
When the pressure is applied to the disk, the distance between the disks changes.
Therefore the distance between the disks changes linearly when the pressure is applied to the movable disk by break operation.
Max. measurable pressure is 170 bar.
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

Each unfiltered input signal voltage is monitored to be in the range of 0.2V ± 0.1V< input signal voltage < 4.8V ± 0.1V.
A failure is detected if the output signal value is out of specified range for more than 1s or pressure sensor self test form is against to specification during self test.

DTC Detecting Condition





Schematic Diagram





Signal Waveform