Leak Detection Sensor: Testing and Inspection

1. REMOVE LH FRONT FENDER LINER.
2. 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 terminals VC and E2 of the wiring harness side.

Voltage: 4.5 - 5.5 V

- Turn the ignition switch OFF.
- Reconnect the vapor pressure sensor connector.





3. INSPECT POWER OUTPUT OF VAPOR PRESSURE SENSOR.
- Turn the ignition switch ON.
- Disconnect the vacuum hose from the vapor pressure sensor.
- Connect a voltmeter to terminals PTNK and E2 of the ECM, and measure the output voltage under the following conditions:
- Apply vacuum (2.0 kPa (15 mm Hg, 0.59 in.Hg)) to the vapor pressure sensor.

Voltage: 1.3 - 2.1 V

- Release the vacuum from the vapor pressure sensor.

Voltage: 3.0 - 3.6 V

- Apply pressure (1.5 kPa (15 gf/cm2, 0.22 psi)) to the vapor pressure sensor.

Voltage: 4.2 - 4.8 V

- Reconnect the vacuum hose to the vapor pressure sensor.
4. REINSTALL LH FRONT FENDER LINER.