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.

2006 Toyota Sienna CEFACTORY OEM SERVICE PROCEDURE

Throttle Body: Removal

DRAIN ENGINE COOLANT (See REPLACEMENT )
REMOVE V-BANK COVER SUB-ASSEMBLY
1. Using a socket hexagon wrench 5, remove the 3 nuts.
2. Remove the V-bank cover.
  
  Fig 1: Removing V-Bank Cover Sub-Assembly
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE AIR CLEANER CAP SUB-ASSEMBLY
1. Disconnect the mass air flow meter connector.
2. Disconnect the 3 vacuum hoses.
3. Remove the fuel vapor feed hose from the 2 hose clamps.
4. Disconnect the ventilation hose.
5. Loosen the 2 air cleaner cap bolts.
6. Loosen the hose clamp bolt and remove the air cleaner cap together with the No. 1 air cleaner hose.
7. Remove the air cleaner filter element.
  
  Fig 2: Removing Air Cleaner Cap Sub-Assembly
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE THROTTLE BODY ASSEMBLY
1. Disconnect the throttle motor connector.
  
  Fig 3: Disconnecting Throttle Motor Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the No. 2 water by-pass hose.
3. Disconnect the No. 3 water by-pass hose.
4. Remove the 2 bolts, the 2 nuts and the throttle body.
  
  Fig 4: Removing Throttle Body
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Remove the gasket from the intake air connector.

Factory Service Tools

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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.