Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Vapor Pressure Sensor: Inspection
- INSPECT POWER SOURCE VOLTAGE OF VAPOR PRESSURE SENSOR
- Disconnect the vapor pressure sensor connector.
- Turn the ignition switch ON.
- Using a voltmeter, measure the voltage between connector terminal 1 and 3 of the wiring harness side.
Voltage: 4.5 - 5.5 V
- Turn the ignition switch OFF.
- Reconnect the vapor pressure sensor connector.
- INSPECT POWER OUTPUT OF VAPOR PRESSURE SENSOR
- Turn the ignition switch ON.
- Remove the fuel tank cap.
- Connect a voltmeter to terminal 2 and 3, and measure the output voltage.
Voltage: 3.0 - 3.6 V
- Reinstall the fuel tank cap.
- Turn the ignition switch OFF.
Use the Manual With the Right Hardware
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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.
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