Vapor Pressure Sensor: Inspection

INSPECT POWER SOURCE VOLTAGE OF VAPOR PRESSURE SENSOR
1. Disconnect the vapor pressure sensor connector.
2. Turn the ignition switch ON.
3. Using a voltmeter, measure the voltage between connector terminal 1 and 3 of the wiring harness side.
  Voltage: 4.5 - 5.5 V
4. Turn the ignition switch OFF.
5. Reconnect the vapor pressure sensor connector.
  
  Fig 1: Inspecting Power Source Voltage Of Vapor Pressure Sensor
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT POWER OUTPUT OF VAPOR PRESSURE SENSOR
1. Turn the ignition switch ON.
2. Remove the fuel tank cap.
3. Connect a voltmeter to terminal 2 and 3, and measure the output voltage.
  Voltage: 3.0 - 3.6 V
4. Reinstall the fuel tank cap.
5. Turn the ignition switch OFF.
  
  Fig 2: Inspecting Power Output Of Vapor Pressure Sensor
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002