Fuel rail pressure sensor is mounted to fuel rail and it senses fuel rail pressure.
GDI ECM operates fuel pressure control valve with the signal from fuel rail pressure sensor to control optimized RPM and rail pressure.
If sensor signal input is higher than 4.7V during 0.5 sec, ECM sets DTC P0193.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Signal check, high | 1. Poor connection 2. Open or short to power in signal circuit 3. Open in ground circuit 4. FPS |
Threshold Value |
•
Sensor voltage > 4.7V | |
Diagnostic Time |
•
0.5 sec. | |
MIL ON Condition |
•
3 driving cycle |
Fig.1) Normal waveform of FPS at acceleration.
