EVAP Vacuum Switching Valve (All Models)
WARNING:
On Prius, read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS .
- Remove EVAP Vacuum Switching Valve (VSV). For location of EVAP VSV, see EVAP VACUUM SWITCHING VALVE LOCATION table and Figure-Figure
.EVAP VACUUM SWITCHING VALVE LOCATION
Application Location Camry On Air Cleaner Housing & Contains 2-Pin Electrical Connector With Black/White & Black/Red Wires Camry Solara On Air Intake Hose, Near Air Cleaner Assembly & Contains 2-Pin Electrical Connector With Black/White & Black/Red Wires Celica On Bracket At Rear Of Air Cleaner Housing & Contains 2-Pin Electrical Connector With Green/Orange & Black/White Wires Corolla On Bracket At Rear Of Air Cleaner Housing & Contains 2-Pin Electrical Connector With Blue/Black & Black Wires ECHO On Bracket At Side Of Air Cleaner Housing & Contains 2-Pin Electrical Connector With Black & White/Green Wires Highlander On Rear Of Air Cleaner Housing & Contains 2-Pin Electrical Connector With Black/White & Black/Red Wires Matrix On Bracket At Rear Of Air Cleaner Housing & Contains 2-Pin Electrical Connector With Blue/Black & Black Wires MR2 On Air Intake Hose, Near Air Cleaner Assembly & Contains 2-Pin Electrical Connector With Black/Red & White Wires Prius At Passenger's Side Front Corner Of Engine Compartment, Near Air Intake Hose & Contains 2-Pin Electrical Connector With Red/Blue & Black Wires RAV4 On Air Intake Hose, Near Air Cleaner Assembly & Contains 2-Pin Electrical Connector With Black/Red & Pink Wires Tacoma On Bracket Bolted To Inside Of Driver's Side Front Fender Panel & Contains 2-Pin Electrical Connector With White/Green & White/Red Wires - Using ohmmeter, ensure continuity exists between electrical terminals on EVAP VSV and that resistance is within specification. See EVAP VACUUM SWITCHING VALVE RESISTANCE table. Replace EVAP VSV if no continuity exists or resistance is not within specification.EVAP VACUUM SWITCHING VALVE RESISTANCE
Application Ohms @ 68°F (20°C) Camry & Camry Solara, Highlander, RAV4 & Tacoma 30-34 Celica, Corolla, ECHO, Matrix, MR2 & Prius 27-33 - Using ohmmeter, ensure no continuity exists between each electrical terminal and body of EVAP VSV. Replace EVAP VSV if continuity exists between electrical terminal and body of EVAP VSV.
- To test EVAP VSV operation, apply air pressure to port "E". Ensure air does not flow from port "F". Perform STEP 1 in illustration. See Fig 1-Fig 5 .
- Apply battery voltage and ground to electrical terminals on EVAP VSV. Apply air pressure to port "E". Ensure air flows from port "F". Perform STEP 2 in illustration. See Fig 1-Fig 5 . Replace EVAP VSV if defective.