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.

2008 Scion xD AutomaticFACTORY OEM SERVICE PROCEDURE

Throttle Body: Removal

DRAIN ENGINE COOLANT (See REPLACEMENT )
REMOVE NO. 2 CYLINDER HEAD COVER (See REMOVAL )
REMOVE AIR CLEANER CAP SUB - ASSEMBLY WITH HOSE
1. Disconnect the wire harness clamp and mass air flow meter connector.
  
  Fig 1: Locating Wire Harness Clamp And Mass Air Flow Meter Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the No. 2 ventilation hose.
  
  Fig 2: Locating Ventilation Hose
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Loosen the hose clamp, unlock the 2 clamps and remove air cleaner cap sub-assembly with hose.
  
  Fig 3: Locating Hose Clamp
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE THROTTLE BODY ASSEMBLY
1. Disconnect the throttle body connector.
  
  Fig 4: Locating Throttle Body Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the water by-pass hose and the No. 2 water by-pass hose.
  
  Fig 5: Locating Water By-Pass Hoses
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Remove the 2 bolts and 2 nuts and remove the throttle body assembly.
  
  Fig 6: Locating Throttle Body Assembly Bolts And Nuts
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Remove the gasket from the intake manifold.
  
  Fig 7: Locating Intake Manifold Gasket
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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.

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