General Information

Active Hydraulic Booster
C1235 Primary Pressure Sensor-Electrical - General Information

Component Location





General Description

There are three pressure sensors in HPU(Hydraulic Power Unit). They each measure high pressure accumulator pressure, booster pressure, padal simulator pressure. AHB ECU(Electronic Control Unit) uses these measured values to monitor AHB operatoring status and control AHB.
After replacing AHB ECU, pressure sensor calibration is essential.

DTC Description

A failure is detected if the output signal voltage of the pressure sensor is out of specified range.
Each pressure sensor has two output signals which are called "Negative output" and "Positive output".

DTC Detecting Condition





Diagnostic Circuit Diagram