Vapor Pressure Sensor (Avalon, Camry Solara, Land Cruiser & Tundra)

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tundra, 2002 Toyota Tacoma, 2002 Toyota Sienna, 2002 Toyota Sequoia, and 2002 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

Ensure ignition is off. To test vapor pressure sensor supply voltage, disconnect electrical connector at vapor pressure sensor. See Figure, Figure, Figure, Figure and Figure . See VAPOR PRESSURE SENSOR LOCATION table.

VAPOR PRESSURE SENSOR LOCATION

Application	Location
Avalon	On Charcoal Canister, Near Fuel Tank & Contains Black 3-Pin Electrical Connector With White, Pink & Blue/Red Wires
Camry Solara	On Charcoal Canister, Near Fuel Tank & Contains Black 3-Pin Electrical Connector With Brown, Blue/Red & Yellow Wires
Land Cruiser	On Rear Corner Of Charcoal Canister & Contains Black 3-Pin Electrical Connector With Brown/White, Blue/Red & Blue/Black Wires
Tundra	On Rear Corner Of Charcoal Canister & Contains Black 3-Pin Electrical Connector With Green/White, Red/Green & Green/Black Wires

Turn ignition on. Using voltmeter, measure vapor pressure sensor supply voltage between terminals VC and E2 on wiring harness side of electrical connector for vapor pressure sensor. See Fig 1. The VC and E2 terminals are the 2 outer terminals. DO NOT use center terminal. Vapor pressure sensor supply voltage should be 4.5-5.5 volts.

Fig 1: Measuring Typical Vapor Pressure Sensor Supply Voltage (Avalon, Camry Solara, Land Cruiser & Tundra)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
If vapor pressure sensor supply voltage is within specification, turn ignition off. Reinstall electrical connector on vapor pressure sensor. Go to next step. If vapor pressure sensor supply voltage is not within specification, check wiring circuit between Engine Control Module (ECM) and vapor pressure sensor. See ECM LOCATION table. See WIRING DIAGRAMS article.
To test vapor pressure sensor output voltage, turn ignition on. Disconnect vacuum hose from vapor pressure sensor. See Fig 2-Fig 4 .

Fig 2: Disconnecting Vacuum Hose At Vapor Pressure Sensor (Avalon, & Camry Solara)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Disconnecting Vacuum Hose At Vapor Pressure Sensor (Land Cruiser)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: Disconnecting Vacuum Hose At Typical Vapor Pressure Sensor (Tundra)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Obtain access to Engine Control Module (ECM). See ECM LOCATION table. Connect voltmeter between specified ECM terminals. See Fig 5-Fig 8 . See ECM TERMINAL APPLICATION table.

ECM LOCATION

Model

⁽¹⁾ Location

Avalon

Behind Glove Box, Near Passenger's Side Kick Panel

Camry Solara

Behind Glove Box

Land Cruiser

Above Glove Box, Near Passenger's Side Of Instrument Panel

Tundra

Behind Glove Box & Heater Duct

⁽¹⁾	For illustration of ECM location, see THEORY & OPERATION article.

ECM TERMINAL APPLICATION

Application & Terminal		Wire Color
Avalon
E2		White
PTNK		Pink
Camry Solara
E2		Brown
PTNK		Blue/Red
Land Cruiser
E2		Brown/White
PTNK		Blue/Black
Tundra
E2		Green/White
PTNK		Red/Green

Using vacuum pump, apply.59 in. Hg of vacuum to vapor pressure sensor and note vapor pressure sensor output voltage. Ensure vapor pressure sensor output voltage is within specification. See VAPOR PRESSURE SENSOR OUTPUT VOLTAGE table.
Release vacuum from vapor pressure sensor and note vapor pressure sensor output voltage. Ensure vapor pressure sensor output voltage is within specification. See VAPOR PRESSURE SENSOR OUTPUT VOLTAGE table.

Apply.22 psi (.015 kg/cm² ) to vapor pressure sensor and note vapor pressure sensor output voltage. Ensure vapor pressure sensor output voltage is within specification. See VAPOR PRESSURE SENSOR OUTPUT VOLTAGE table. Replace vapor pressure sensor if vapor pressure sensor output voltage is not within specification. See VAPOR PRESSURE SENSOR under EMISSION SYSTEMS & SUB-SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION - V6 & V8 article. Reconnect vacuum hose.

VAPOR PRESSURE SENSOR OUTPUT VOLTAGE

Condition	Volts
Vacuum Applied	1.3-2.1
Vacuum Released	3.0-3.6
Pressure Applied	4.2-4.8

Fig 5: Measuring Vapor Pressure Sensor Output Voltage (Avalon & Camry Solara)

Fig 6: Measuring Vapor Pressure Sensor Output Voltage (Land Cruiser)

Fig 7: Measuring Vapor Pressure Sensor Output Voltage (Tundra 3.4L V6)

Fig 8: Measuring Vapor Pressure Sensor Output Voltage (Tundra 4.7L V8)