Vapor Pressure Sensor: Inspection

2005 Toyota Celica GT-S, StandardSECTION 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 1 and 3 of the wiring harness side.

      Voltage: 4.5 - 5.5 V 

      Fig 1: Measuring Voltage Between Vapor Pressure Sensor Connector Terminals 1 & 3
      G02600842Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Turn the ignition switch to LOCK.
    5. Reconnect the vapor pressure sensor connector.
  2. 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 

      Fig 2: Connecting Voltmeter To Terminals 2 & 3
      G02600843Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Reinstall the fuel tank cap.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.