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Home >> Infiniti >> 2018 >> QX60 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Introduction And Basic Inspection) >> Basic Inspection >> Fuel Pressure Check >> Work Procedure >> High Fuel Pressure Check
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High Fuel Pressure Check

NOTE: Since the fuel pressure gauge kit cannot be connected, follow the method shown below to check high fuel pressure.

SYMBOL With CONSULT

  1. Start engine.
  2. Check "FUEL PRES SEN V" in "Data Monitor" mode of "ENGINE".

    Monitor Item

    Condition

    Values/Status

    FUEL PRES SEN V

    • Engine: After warming up
    • Selector lever: P or N
    • Air conditioner switch: OFF
    • No load

    Idle

    1.120 - 1.310 V

    2, 000 RPM

    1.215 - 1.425 V

SYMBOL Without CONSULT

  1. Start engine.
  2. Check fuel rail pressure Sensor voltage.

ECM

Condition

Voltage

Connector

+

-

Terminal

F78

53

83

[Engine is running]

  • Warm-up condition
  • Idle speed

1.12 - 1.31 V

[Engine is running]

  • Warm-up condition
  • Engine speed: 2, 000 RPM

1.22 - 1.42 V