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Home >> Infiniti >> 2013 >> M56 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0190 To P1084 >> DTC P0191: FRP Sensor >> Component Inspection (Fuel Rail Pressure Sensor)
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Component Inspection (Fuel Rail Pressure Sensor)

  1. CHECK FRP SENSOR 

    WITH CONSULT

    1. Turn ignition switch OFF.
    2. Reconnect harness connector disconnected.
    3. Start the engine.
    4. Select "DATA MONITOR" mode with CONSULT.
    5. Check that the "FUEL PRES SEN V" indication.
      Monitor Item Condition Values/Status
      FUEL PRES SEN V Engine speed: Idle 820 - 1, 220 mV
      Engine speed: Revving engine from idle to 4, 000 rpm quickly 820 - 3, 060 mV

    WITHOUT CONSULT

    1. Turn ignition switch OFF.
    2. Reconnect harness connector disconnected.
    3. Start the engine.
    4. Check FRP sensor signal voltage.
      + - Condition Value (Approx.)
      ECM
      Connector Terminal Connector Terminal
      F110 31 F110 40 [Engine is running]
      • Warm-up condition
      • Idle speed
      0.82 - 1.22 V
      [Engine is running]
      • Warm-up condition
      • Revving engine from idle to 4, 000 rpm quickly
      0.82 - 3.06 V

      Is the inspection result normal? 

      YES: INSPECTION END.

      NO: Replace FRP sensor. Refer to "EXPLODED VIEW ".