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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 643 (INTAKE AIR CONTROL SYSTEM)INTAKE AIR CONTROL VALVE ASSY NO. 1 (1MZ-FE)REPLACEMENT
2004 Toyota Matrix XR, FWD, Standard

Intake Air Control Valve ASSY No. 1 (1MZ-FE): Replacement

2004 Toyota Matrix XR, FWD, StandardSECTION Replacement
WARNING: This page is about a different car, the 2004 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
  1. DRAIN ENGINE COOLANT (See  COOLANT (1MZ-FE/3MZ-FE)  ) 
  2. REMOVE FRONT SUSPENSION UPPER BRACE CENTER (W/ PERFORMANCE ROD) 
  3. REMOVE V-BANK COVER SUB-ASSY (See  REPLACEMENT  ) 
  4. REMOVE AIR CLEANER CAP SUB-ASSY 
  5. REMOVE THROTTLE BODY ASSY (See  THROTTLE BODY ASSEMBLY (1MZ-FE/3MZ-FE)  ) 
  6. REMOVE INTAKE AIR CONTROL VALVE ASSY 
    1. Disconnect the union to check valve hose.
    2. Disconnect the fuel vapor feed hose No. 2.
    3. Disconnect the vacuum hose.
      Fig 1: Removing Intake Air Control Valve Assy
      G02892361Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the 5 bolts, nut and IAC valve.
    5. Remove the gasket from the intake air surge tank.
  7. INSTALL INTAKE AIR CONTROL VALVE ASSY 
    1. Install a new gasket to the intake air surge tank.
    2. Install the IAC valve with the 5 bolts and nut.

      Torque: 

      21 N.m (214 kgf.cm, 15 ft.lbf) for bolt A and nut A 

      20 N.m (204 kgf.cm, 15 ft.lbf) for bolt B 

    3. Connect the vacuum hose.
    4. Connect the fuel vapor hose.
    5. Connect the union to check valve hose.
      Fig 2: Installing IAC Valve
      G02892362Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. INSTALL THROTTLE BODY ASSY (See  THROTTLE BODY ASSEMBLY (1MZ-FE/3MZ-FE)  ) 
  9. INSTALL AIR CLEANER CAP SUB-ASSY 
  10. ADD ENGINE COOLANT (See  COOLANT (1MZ-FE/3MZ-FE)  ) 
  11. CHECK FOR ENGINE COOLANT LEAKS (See  ON-VEHICLE INSPECTION  ) 
  12. INSTALL V-BANK COVER SUB-ASSY (See  REPLACEMENT  ) 
  13. INSTALL FRONT SUSPENSION UPPER BRACE CENTER (W/ PERFORMANCE ROD) 

    Torque: 80 N.m (815 kgf.cm, 59 ft.lbf) 

RENDER: 1.0x

NO RELATED

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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.