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Home >> Infiniti >> 2013 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Introduction >> 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.

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

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
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