Kia Stinger CK: Fuel Delivery System / Fuel Pressure Sensor (FPS)

Kia Stinger (CK) 2018-2023 Service Manual / Engine Control / Fuel System / Fuel Delivery System / Fuel Pressure Sensor (FPS)

Specifications

Specification

Pressure [kPa (kgf/cm², psi)]	Output Voltage (V) [Vref = 5V]
50 (0.51, 7.3)	0.3
600 (6.12, 87.0)	2.5
1100 (11.2, 159.5)	4.5

Description and operation

Description

Installed on top of the low pressure fuel pump, the fuel pressure sensor (FPS) measures the pressure in the low pressure line.

Based on the fuel pressure measured by the FPS and the fuel consumption, the fuel pump control module (FPCM) determines whether to activate the low pressure fuel pump.

After activating the low pressure fuel pump, the FPS continues to send the fuel pressure to the FPCM and the FPCM keeps controlling the fuel flow rate using the feedback from the FPS.

Schematic diagrams

Circuit Diagram

Terminal Information

Terminal Illustration

Terminal Function

No.	Function	Connected to
1	Fuel Pressure sensor (FPS) power supply	Fuel Pressure sensor (FPS)
2	Fuel Pressure sensor (FPS) ground	Fuel Pressure sensor (FPS)
3	Fuel Pressure sensor (FPS) signal input	Fuel Pressure sensor (FPS)

Repair procedures

Inspection

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

Check the output voltage of fuel pressure sensor (FPS).

Pressure [kPa (kgf/cm², psi)]	Output Voltage (V) [Vref = 5V]
50 (0.51, 7.3)	0.3
600 (6.12, 87.0)	2.5
1100 (11.2, 159.5)	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 rear seat cushion. (Refer to Body - "Rear Seat Assembly")

4.	Remove the fuel pump service cover (A) after loosening the mounting screws.

5.	Disconnect the fuel feed quick-connector (A).

6.	Remove the fuel pressure sensor fixing pin (B).

7.	Remove the fuel pressure sensor from the fuel pump.

Installation

1.	Install in the reverse order of removal.

Fuel Pump Control Module (FPCM)

Fuel Line

Other information:

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