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Home >> Infiniti >> 2017 >> QX80 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Introduction, Wiring Diagrams And Basic Inspection) >> Basic Inspection >> Fuel Pressure >> 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.

G-20 WITH CONSULT

  1. Start engine.
  2. Check "FUEL PRES SEN V" in "DATA MONITOR" mode with CONSULT.
    Monitor Item Condition Values/Status
    FUEL PRES SEN V Idle 980 - 1, 200 mV
    Revving engine from idle to 4, 000 rpm quickly 1, 100 - 2, 900 mV

G-21 WITHOUT CONSULT

  1. Start the engine.
  2. Check fuel rail pressure sensor signal voltage.
+ -  
Condition
Value
(Approx.)
Fuel rail pressure sensor
Connector Terminal
F26 2 Ground Engine speed: idle 0.98 - 1.2 V
Engine speed: Revving engine from idle to 4, 000 rpm quickly 1.1 - 2.9 V