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Home >> Lexus >> 2015 >> GS 350 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System - Service Information >> Fuel Pressure Sensor >> Inspection [09/2014 - 10/2015] >> Procedure

Inspection [09/2014 - 10/2015]: Procedure

  1. INSPECT FUEL DELIVERY PIPE SUB-ASSEMBLY (FUEL PRESSURE SENSOR) 
    NOTE:
    • Do not remove the fuel pressure sensor from the fuel delivery pipe sub-assembly.
    • If a fuel pressure sensor is removed, replace the fuel delivery pipe sub-assembly (fuel pressure sensor) with a new one.
    1. Check the fuel pressure sensor output voltage.
      GTY397085Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Apply 5 V between terminals 3 (VC) and 1 (E2).
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Fuel Pressure Sensor)
        *b Voltage applied bet ween terminals
        NOTE:
        • Be careful when connecting the leads, as the fuel pressure sensor may be damaged if the leads are connected to the wrong terminals.
        • Do not apply 6 V or more of voltage to terminals 3 (VC) and 1 (E2).

        HINT: 

        If a stable power supply is not available, use 4 1.2 V nickel-metal hydride batteries, etc.

      2. GTY407464Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Measure the voltage between terminals.

        Standard Voltage

        Tester Connection Condition Specified Condition
        2 (PR) - 1 (E2) Pressure not applied to fuel pressure sensor Approximately 0.5 V*

        *: The output voltage changes depending on the voltage applied to the terminals.

        Output voltage = (0.1 x Voltage applied to terminals)

        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Fuel Pressure Sensor)

        If the result is not as specified, replace the fuel delivery pipe sub-assembly (fuel pressure sensor).