Hyundai Sonata LF: Fuel Delivery System / Fuel Pressure Sensor (FPS) Repair procedures

Hyundai Sonata LF 2014-2019 Service Manual / Engine Control / Fuel System / Fuel Delivery System / Fuel Pressure Sensor (FPS) Repair procedures

Inspection

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

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

Specification : Refer to “Specification”

Removal

1.	Turn the ignition seitch OFF and disconnect the battery negative (-) cable.

2.	Remove the rear seat cushion. ( Refer to Body - "Rear Seat Assembly" )

3.	Remove the fuel pump sservice cover (A).

4.	Disconnect the fuel pressure sensor connector (A).

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

6.	Remove the fuel pressure sensor (C) from the fuel pump.

Installation

1.	Install in the reverse order of removal.

Fuel Pressure Sensor (FPS) Schematic Diagrams

Circuit Diagram Fail-Safe Mode Item Fail-Safe Output Voltage (V) 12 If the fuel pressure sensor malfunctions, it enters fail safe mode...

Fuel Line Repair procedures

Removal Whenever the high pressure fuel pump, fuel pipe, deliverypipe, or injector is removed immediately after shutting offthe engine, an injury may be caused by the release ofhighly pressurized fuel...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Fuel Pressure Sensor (FPS) Description and Operation

Description The fuel pressure sensor (FPS) is installed on the top of the low pressure fuel pump and measures the pressure in the low pressure fuel line. Based on the fuel pressure measured by the FPS and the amount of fuel consumed, the fuel pump control module (FPCM) determines whether to activate the low pressure fuel pump...

Hyundai Sonata LF 2014-2019 Service Manual: Troubleshooting