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.
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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 23 (ENGINE CONTROL SYSTEM & COMPONENT TESTING - 4-CYLINDER)EMISSION SYSTEMS & SUB-SYSTEMSFUEL EVAPORATIVE SYSTEMEVAP VACUUM SWITCHING VALVE (ALL MODELS)
2004 Toyota Matrix XR, FWD, Standard
EVAP Vacuum Switching Valve (All Models)
2004 Toyota Matrix XR, FWD, StandardSECTION EVAP Vacuum Switching Valve (All Models)
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tacoma, 2002 Toyota RAV4, 2002 Toyota Prius, 2002 Toyota MR2, and 2002 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
On Prius, read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS .
- Remove EVAP Vacuum Switching Valve (VSV). See EVAP VACUUM SWITCHING VALVE LOCATION table. See Figure-Figure
.EVAP VACUUM SWITCHING VALVE LOCATION
Application Location Camry On Air Cleaner Housing & Contains Blue or Black 2-Pin Electrical Connector With Black/White & Black/Red Wires Camry Solara On Air Intake Hose, Near Air Cleaner Assembly & Contains Black 2-Pin Electrical Connector With Black/White & Black/Red Wires Celica On Bracket At Rear Of Air Cleaner Housing & Contains Black 2-Pin Electrical Connector With Green/Orange & Black/White Wires Corolla On Bracket At Rear Of Air Cleaner Housing & Contains Black 2-Pin Electrical Connector With Blue/Black & Black Wires ECHO On Bracket At Side Of Air Cleaner Housing & Contains Blue 2-Pin Electrical Connector With Black/Yellow & White/Green Wires Highlander On Rear Of Air Cleaner Housing & Contains Blue 2-Pin Electrical Connector With Black/White & Black/Red Wires MR2 On Air Intake Hose, Near Air Cleaner Assembly & Contains Blue 2-Pin Electrical Connector With Black/Red & White Wires Prius At Passenger's Side Front Corner Of Engine Compartment, Near Air Intake Hose & Contains Blue 2-Pin Electrical Connector With Red/Blue & Black Wires RAV4 On Air Intake Hose, Near Air Cleaner Assembly & Contains Black 2-Pin Electrical Connector With Black/Red & Pink Wires Tacoma On Bracket Bolted To Inside Of Driver's Side Front Fender Panel & Contains Black 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 30-34 Celica, Corolla, ECHO, MR2 & Prius 27-33 Highlander, RAV4 & Tacoma 30-34 - 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.
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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.