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Hyundai Equus: Fuel Pump Control Module (FPCM) Description and Operation - Fuel Delivery System - Engine Control/Fuel System - Hyundai Equus VI 2009-2026 Service ManualHyundai Equus: Fuel Pump Control Module (FPCM) Description and Operation

Description
The fuel pump control module (FPCM) is installed on the right side of the trunk compartment. It controls the BLDC (Brushless DC) motor mounted inside the variable low pressure fuel pump. This module compares the target fuel pressure data received from the ECM to the current fuel pressure measured by the fuel pressure sensor (FPS) and, based on the data from the FPS, controls the 3-phase duty function of the low pressure fuel pump to generate the target pressure.
Operation

1.
The ECM receives the target fuel pressure signal through CAN communication with the FPCM.
2.
The FPS applies the current low fuel pressure value to the FPCM.
3.
The FPCM controls the 3-phase duty function of the low pressure fuel pump.
4.
The FPS applies the current low fuel pressure value to the FPCM.
5.
It controls the low pressure fuel pump based on the RPM and vehicle load to provide a consistent flow rate.
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