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: Installation

INSTALL THROTTLE BODY ASSEMBLY
1. Install a new gasket to the intake air connector.
2. Install the throttle body with the 2 bolts and the 2 nuts.
  Torque: 11 N*m (112 kgf*cm, 8 ft.*lbf)
3. Connect the No. 3 water by-pass hose.
4. Connect the No. 2 water by-pass hose.
5. Connect the throttle motor connector.
INSTALL AIR CLEANER CAP SUB-ASSEMBLY
Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf)
ADD ENGINE COOLANT (See REPLACEMENT )
CHECK FOR ENGINE COOLANT LEAKAGE
(See ON-VEHICLE INSPECTION )
INSTALL V-BANK COVER SUB-ASSEMBLY
1. Fit the 2 retainers and install the V-bank cover.
2. Using a socket hexagon wrench 5, tighten the 3 nuts.
  Torque: 7.9 N*m (81 kgf*cm, 70 in.*lbf)

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.