Hyundai Ioniq: Fuel Delivery System / Fuel Pump Control Module (FPCM). Description and operation

Hyundai Ioniq (AE) 2017-2025 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 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.
2.
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.
3.
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.

    Accelerator Pedal. Repair procedures

    Removal 1.Turn the ignition seitch OFF and disconnect the battery negative (-) cable. 2.Disconnect the accelerator position snesor connector (A).3.Remove the installation nut (A), and then remove the accelerator pedal module...

    Fuel Pump Control Module (FPCM). Schematic diagrams

    C..

    Other information:

    Hyundai Ioniq (AE) 2017-2025 Service Manual: High voltage shut-off procedures


    High Voltage Shut-off Procedures    • Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries...

    Hyundai Ioniq (AE) 2017-2025 Service Manual: Auto Light Sensor. Repair procedures


    InspectionCheck if the auto light control operates like a timing chart shown below. Tail lamp output and head lamp (Low) output is controlled based on the auto light sensor's input (illumination intensity) when the Auto Light Switch in Multi-Function Switch is turned ON, and the vehicle is in IGN1 or IGN2 ON Mode...

    Categories

    Hybrid Vehicle Engine Compartment

    Hyundai Ioniq. Hybrid Vehicle Engine Compartment

    1. Engine oil filler cap
    2. Engine oil dipstick
    3. Engine coolant cap
    4. Engine coolant reservoir
    5. Inverter coolant reservoir

    read more


     
    Copyright © 2025 www.hioniqae.com