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Vapor Pressure Sensor: Inspection

  1. INSPECT POWER SOURCE VOLTAGE OF VAPOR PRESSURE SENSOR 
    1. Disconnect the vapor pressure sensor connector.

      HINT:

      Near the fuel tank.

    2. Turn the ignition switch ON.
    3. Using a voltmeter, measure the voltage between connector terminals VC and E2 of the wiring harness side.

      Voltage: 4.5 - 5.5 V 

      4. Fig 1: Inspecting Power Source Voltage Of Vapor Pressure Sensor
      G04241394Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Turn the ignition switch OFF.
    5. Reconnect the vapor pressure sensor connector.
  2. INSPECT POWER OUTPUT OF VAPOR PRESSURE SENSOR 
    1. Turn the ignition switch ON.
    2. Connect a voltmeter to terminals PTNK and E2, and measure the output voltage.
      Fig 2: Measuring Vapor Pressure Sensor Output Voltage
      G04241395Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Voltage: 3.0 - 3.6 V 

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