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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

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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