Hyundai Sonata: Fuel Delivery System / Fuel Pump Control Module (FPCM) Description and Operation

Hyundai Sonata LF 2014-2019 Service Manual / Engine Control / Fuel System / Fuel Delivery System / Fuel Pump Control Module (FPCM) Description and Operation

Description

The fuel pump control module (FPCM) is installed on the right side of the fuel tank on the fuel pump top plate and controls the DC motor mounted inside the low pressure fuel pump.

The module compares instantaneous fuel pressure information measured by the fuel pressure sensor (FPS) with target fuel pressure information provided by the ECM and generates the desired target fuel pressure by controlling the fuel pump motor and regulating fuel flow rate in the low pressure fuel line between the low and high pressure fuel pumps.

Operation

1.	The ECM provides target fuel pressure information to the FPCM via CAN network.

The FPS provides the FPCM with actual pressure information of the low pressure fuel line between the low and high pressure fuel pumps, and the FPCM forwards the information to the ECM.Also, the FPCM diagnoses faults in the FPCM, fuel pump motor and FPS and then provides the diagnosis information to the ECM.

The FPCM compares the actual fuel pressure information measured by the FPS with the target fuel pressure information provided by the ECM and controls the voltage that is provided to the low pressure fuel pump motor.The FPCM keeps regulating fuel flow rate by controlling the low pressure fuel pump, depending on engine speed (rpm) and vehicle loads.

Fuel Pressure Regulator Repair procedures

Removal 1. Remove the fuel pump. (Refer to Fuel Delivery System - "Fuel Pump") 2. Remove the fuel pressure regulator fixing clip (A). 3. Remove the fuel pressure regulator (B) from the fu ...

Fuel Pump Control Module (FPCM) Specifications

Specification ItemsSpecificationApplied Voltate (V)6~18Current Consumption (A)Max. 15Fuel Pressure StartMax. 600 KPa (Max. 6.1 kgf/cm?, Max. 87.0 psi)In operation350 ~ 500 KPa (3.5 ~ 5.1 kgf ...

Other information:

Hyundai Sonata LF 2014-2019 Owners Manual: Heating and Air Conditioning
1. Start the engine. 2. Set the mode to the desired position. To improve the effectiveness of heating and cooling : - Heating: - Cooling: 3. Set the temperature control to the desired position. 4. Set the air intake control to the outside (fresh) air or recirculated air position. 5. Set the fan ...

Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Removal 1. Remove the front bumper cover. (Refer to Body - "Front Bumper Cover") 2. Remove the high pitch horn (A) and low pitch horn (B) after disconnect the horn connector (C) and loosening the mounting the bolt. Installation 1. Install the horns after connect the horn connector ...