Kia Niro: Engine Control System / Rail Pressure Sensor (RPS) Repair procedures

Inspection
1.

Connect the KDS/GDS on the Data Link Connector (DLC).

2.

Measure the output voltage of the RPS during idle at various engine speeds.

Pressure
Output Voltage (V) [Vref=5V]
bar
[MPa (kgf/cm², psi)]
0
0 (0, 0)
0.5
140
14 (142, 2031)
2.5
280
28 (286, 4061)
4.5

Removal
1.

Release the residual pressure in fuel line.

(Refer to Fuel Delivery System - “Release Residual Pressure in Fuel Line”).

2.

Switch "OFF" the ignition and disconnect the negative (-) battery terminal.

3.

Remove the intake manifold.

(Refer to Engine Mechanical System - "Intake Manifold")

4.

Remove the injector foam.

5.

Disconnect the rail pressure sensor connector, and then remove the sensor (A) from the delivery pipe.

Rail Pressure Sensor :

30.0 - 34.3 N·m (3.0 - 3.5 kgf·m, 22.1 - 25.3 lb·ft)

Installation
  

Install the component to the specified torque.

Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing.

1.

Install in the reverse order of removal.

Rail Pressure Sensor (RPS) Schematic diagrams
Circuit Diagram Harness Connector ...

Rail Pressure Sensor (RPS) Troubleshooting
Signal Waveform ...

Other information:

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