Kia Sportage: Engine Control System / Rail Pressure Sensor (RPS) Description and operation
Rail Pressure Sensor (RPS) is installed on the delivery pipe and measures the
instantaneous fuel pressure in the delivery pipe. The sensing element (Semiconductor
element) built in the sensor converts the pressure to voltage signal. By using
this signal, the ECM can control correct injection amount and timing and adjusts
the fuel pressure with the fuel pressure regulator valve if the target pressure
and the actual pressure calculated by the RPS output signal are different.

Specification
Pressure
Output Voltage (V) [Vref=5V]
bar
[MPa (kgf/cm², psi)]
0
0 (0, 0)
...
Circuit Diagram
Terminal Information
Terminal Illustration
Terminal Function
No.
Function
Connected ...
Other information:
Replacement
1.
Remove the stopper (B) from the glove box (A).
2.
Remove the air damper (A) from the glove box (B).
3.
Remove the filter cover (A) by pressing the knob.
...
Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the PCSV connector.
3.
Measure resistance between the PCSV terminals 1 and 2.
4.
Check that the resistance is within ...