Vapor Pressure Sensor: Inspection

INSPECT POWER SOURCE VOLTAGE OF VAPOR PRESSURE SENSOR
1. Turn the ignition switch ON.
2. Using a voltmeter, measure the voltage between connector terminals VC and E2 of the wiring harness side.
  Voltage: 4.5 - 5.5 V
3. Turn the ignition switch OFF.
Fig 1: Measuring Voltage Between Connector Terminals VC And E2
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 terminals 2 and 3, and measure the output voltage.
  Voltage: 3.0 - 3.6 V
4. Reinstall the fuel tank cap.
Fig 2: Connecting Voltmeter To Terminals 2 And 3
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002