Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSHYUNDAI2014EQUUS SIGNATUREREPAIR AND DIAGNOSISENGINE MECHANICALFUEL SYSTEMFUEL DELIVERY SYSTEMFUEL PUMP CONTROL MODULE (FPCM)DESCRIPTION AND OPERATIONOPERATION
2014 Hyundai Equus Signature
Description And Operation: Operation
2014 Hyundai Equus SignatureSECTION Operation
- The ECM receives the target fuel pressure signal through CAN communication with the FPCM.
- The FPS applies the current low fuel pressure value to the FPCM
- The FPCM controls the 3-phase duty function of the low pressure fuel pump
- The FPS applies the current low fuel pressure value to the FPCM.
- It controls the low pressure fuel pump based on the RPM and vehicle load to provide a consistent flow rate.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.