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.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 750 (EMISSION CONTROL SYSTEM)DUTY VACUUM SWITCHING VALVE (3MZ-FE)REPLACEMENT

2004 Toyota Matrix XR, FWD, Standard

Duty Vacuum Switching Valve (3MZ-FE): Replacement

2004 Toyota Matrix XR, FWD, StandardSECTION Replacement

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

DISCONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
REMOVE V-BANK COVER SUB-ASSY (See THROTTLE BODY ASSY (3MZ-FE) )
REMOVE EMISSION CONTROL VALVE SET
1. Disconnect the 2 VSV connectors.
2. Remove the wire harness clamp.
  
  Fig 1: Disconnecting 2 VSV Connectors
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Disconnect the fuel vapor feed hose No. 1.
4. Disconnect the fuel vapor feed hose No. 2.
5. Disconnect the vacuum hose.
6. Remove the vacuum hose from the clamp.
7. Remove the 2 nuts, then remove the emission control valve set.
  
  Fig 2: Disconnecting Vacuum Hose
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE DUTY VACUUM SWITCHING VALVE
1. Disconnect the 2 vacuum hoses.
2. Remove the screw, then remove the duty vacuum switching valve.
  
  Fig 3: Removing Duty Vacuum Switching Valve
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL DUTY VACUUM SWITCHING VALVE
INSTALL EMISSION CONTROL VALVE SET
Torque: 8.0 N.m (82 kgf.cm, 71 in.lbf)
CHECK CONNECTION OF VACUUM HOSE
INSTALL V-BANK COVER SUB-ASSY (See THROTTLE BODY ASSY (3MZ-FE) )
CONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
Torque: 5.4 N.m (55 kgf.cm, 48 in.lbf)
SYSTEM INITIALIZATION (See PRECAUTION )

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

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.