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

Hyundai Sonata LF 2014-2019 Service Manual / Engine Control / Fuel System / 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.

Check the power supply voltage provided to the fuel pressure sensor (FPS).

Specification: 5V

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

Specification: 1.9 ~ 3.2 V

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

C..

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...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Occupant Classification Sensor (OCS) Repair procedures

Removal OCS ECU 1. Disconnect the battery negative cable, and wait for at least three minutes before beginning work. 2. Remove the front passenger seat assembly. (Refer to Body - "Front Seat Assembly") 3. Disconnect the OCS ECU connector (A)...

Hyundai Sonata LF 2014-2019 Service Manual: Description and Operation