Hyundai Sonata: Fuel Delivery System / Fuel Pump Control Module (FPCM) Repair procedures

Removal
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
emove the rear seat cushion.
( Refer to Body - "Rear Seat Assembly")
3.
Remove the fuel pump service cover (A).

4.
Disconnect the fuel pump control module connector (A).
5.
Remove the fuel pressure control module (A) after removing the screws.

Installation
1.
Install in the reverse order of removal.
Inspection
1.
Connect the GDS to the vehicle's data link connector (DLC).
2.
Check any DTCs and if exist, repair according to the DTC guide.
3.
Check the power supply voltage provided to the fuel pressure sensor (FPS).

Specification: 5V

4.
Check the voltage provided to the fuel pressure sensor (FPS) at idle.

Specification: 1.9 ~ 3.2 V

5.
Check the fuel pressure in the low fuel line.
(Refer to Fuel Delivery System - "Fuel Pressure Test")
Items
Specification
start
Max. 600 KPa (Max. 6.1 kgf/cm?, Max. 87.0 psi)
in operation
350 ~ 500 KPa (3.5 ~ 5.1 kgf/cm?, 50.7 ~ 72.5 psi)

Fuel Pump Control Module (FPCM) Schematic Diagrams
Circuit Diagram Fuel Pressure Control Module (FPCM) Terminal And Input/Output signal FPCM Terminal Function Pin No.DescriptionConnected to1Fuel sender ground Fuel Pump 2Fuel pressure sensor (FPS) ...

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 ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Start/Stop Button Repair procedures
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