2013 Toyota Prius ThreeFACTORY OEM SERVICE PROCEDURE

Throttle Body: Removal: Removal

  1. REMOVE NO. 1 ENGINE UNDER COVER 
  2. DRAIN ENGINE COOLANT (for Engine)  . Refer to REPLACEMENT - Step 2
  3. REMOVE NO. 2 CYLINDER HEAD COVER  . Refer to REMOVAL - Step 29
  4. REMOVE AIR CLEANER CAP SUB-ASSEMBLY 
    1. Disconnect the connector.
      Fig 1: Identifying Mass Air Flow Meter Connector
      GTY224333Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Loosen the hose clamp and disconnect the air cleaner hose assembly.
      Fig 2: Hose Clamp & 2 Clamps
      GTY366746Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 2 clamps and air cleaner cap subassembly.
  5. REMOVE INLET AIR CLEANER ASSEMBLY 
    1. Remove the 2 bolts and inlet air cleaner assembly.
      Fig 3: Identifying Inlet Air Cleaner Assembly
      GTY327354Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE AIR CLEANER CASE 
    1. Remove the air cleaner filter element sub-assembly.
    2. Separate the hose from the 3 clamps.
      Fig 4: Identifying Air Cleaner Filter Element, Hose, Clamps, Air Cleaner Case & Bolts
      GTY224213Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 3 bolts and air cleaner case.
  7. REMOVE AIR CLEANER HOSE ASSEMBLY 
    1. Disconnect the ventilation hose from the cylinder head cover sub-assembly.
      Fig 5: Identifying Air Cleaner Hose Assembly, Hose Clamp & Ventilation Hose
      GTY223684Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Loosen the hose clamp and remove the air cleaner hose assembly.
  8. REMOVE THROTTLE BODY ASSEMBLY 
    1. Type A:
      1. Disconnect the throttle body connector and the 2 water by-pass hoses.
        Fig 6: Identifying Throttle Body Assembly, Connector, Bypass Hoses, Bolts & Nuts
        GTY223851Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Remove the 2 bolts, 2 nuts and throttle body assembly.
      3. Remove the gasket from the intake manifold.
        Fig 7: Identifying Gasket
        GTY329009Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Type B:
      1. Disconnect the connector.
        Fig 8: Identifying Connector, No. 1 Water By-Pass Hose, No. 2 Water By-Pass Hose & Bolts
        GTY384180Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Disconnect the No. 1 water by-pass hose and No. 2 water bypass hose.
      3. Remove the 4 bolts and throttle body assembly.
      4. Remove the gasket from the intake manifold.
        Fig 9: Identifying Gasket
        GTY379628Courtesy 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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