Kia Stinger: Engine Control System / Rail Pressure Sensor (RPS)

Kia Stinger CK 2018-2025 Service Manual / Engine Control / Fuel System / Engine Control System / Rail Pressure Sensor (RPS)

Specifications

Specification

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

Description and operation

Description

Installed on the delivery pipe, the Rail Pressure Sensor (RPS) measures the instantaneous fuel pressure in the delivery pipe. The sensing element (semiconductor element) built into the sensor converts the pressure to voltage signal. By using this signal, the ECM controls the correct injection amount and timing and adjusts the fuel pressure with the fuel pressure regulator valve if the actual pressure calculated by the RPS output signal is different from the target pressure.

Schematic diagrams

Circuit Diagram

Harness Connector

Repair procedures

Inspection

1.	Connect the KDS on the Data Link Connector (DLC).

Measure the output voltage and fuel pressure of the RPS at idle and various engine speed.

Pressure		Output Voltage (V) [Vref=5V]
bar	[MPa (kgf/cm², psi)]	Output Voltage (V) [Vref=5V]
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 the 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 delivery pipe foam (A).

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

Installation

•	Install the component to the specified torques.

•	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.

Troubleshooting

Signal Waveform

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Specifications Specification Exhaust Gas Temperature Sensor (EGTS) #1, 2 ▷ Type : Thermistor type Temperature [°C (°F)] Resistance (kΩ) ...

CVVT Oil Temperature Sensor (OTS)

Specifications Specification Temperature [°C (°F)] Resistance (kΩ) -40 52.15 -20 28.82 ...

Other information:

Kia Stinger CK 2018-2025 Owners Manual: This device complies with Industry Canada licenceexempt RSS standard(s)

Operation is subject to the following two conditions: (1) This device may not cause interference, and (2) This device must accept any interference, including interference that may cause undesired operation of the device. ✽ NOTICE Changes or modifications not expressly approved by the party r ...

Kia Stinger CK 2018-2025 Owners Manual: System malfunction

When the FCA is not working properly, the FCA warning light () will illuminate and the warning message will appear for a few seconds. After the message disappears, the master warning light () will illuminate. In this case, have the vehicle inspected by an authorized Kia dealer. Th ...