A failure is detected if the output signal voltage of the pressure sensor is out of specified range.
Item | Detecting Condition | Possible cause | |
DTC Strategy |
•
Voltage Monitoring | 1. Open or short of pressure sensor circuit 2. Faulty pressure sensor 3. Faulty HECU | |
Case 1 | Monitoring Period |
•
Continuous | |
Enable Conditions |
•
A sensor supply failure is detected if Sensor Supply Voltage shows under 4.75V or over 5.25V for 60ms. | ||
Case 2 | Monitoring Period |
•
Continuous | |
Enable Conditions |
•
A Fault is set if the sensor values(PRS1,PRS2) keep under 0.6V or over 4.5V for 100ms. - PRS1 : Sensor output 1 - PRS2 : Sensor output 2(Inverse image of PRS1) | ||
Case 3 | Monitoring Period |
•
Continuous | |
Enable Conditions |
•
A Fault is set if the if sum of the sensor values(PRS1+PRS2) keep under 4.4V or over 5.4V - PRS1 : Sensor output 1 - PRS2 : Sensor output 2(Inverse image of PRS1) | ||
Fail Safe |
•
The ABS/ESP(ESC) functions are inhibited
•
The ABS/ESP(ESC) warning lamps are activated | ||
