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Home >> Infiniti >> 2014 >> Q50 Base, RWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (Introduction) (Except Hybrid) >> System Description >> System >> Fuel Pump Control Module (FPCM) >> FUEL PUMP CONTROL MODULE (FPCM): System Description >> System Description
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System Description

The fuel pump control module (FPCM) controls the discharging volume of the fuel pump by the FPCM control signals (Low/Mid/High) depending on driving conditions.

Conditions Amount of fuel flow Supplied voltage
For 1 second after turning ignition switch ON Low/Mid Approximately 9.9 V
  • Engine cranking
  • Engine coolant temperature is below 10°C (50°F)
  • Engine is running under high load and high speed conditions
 High Battery voltage (11 - 14 V)
Except the above Low/Mid Approximately 9.9 V
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