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

Kia Stinger CK 2018-2020 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).

2.

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)
Description and operation Description Installed on the righthand side of the fuel tank, the fuel pump control module (FPCM) controls the DC motor mounted inside the low pressure fuel p ...

Fuel Line
Repair procedures Removal Low Pressure Fuel Line [Engine Room <-> Extension Fuel Line] 1. Release the residual pressure in fuel line. (Refer to the Fuel Deliver ...

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