OEM Scion tC Throttle Body

Scion tC Throttle Body Parts and Q&A

• Throttle Body
  22030-0H021
  Q: How to service and repair the throttle body assembly on Scion tC?

  A:

  Service and repair efforts for the throttle body assembly start with coupling drain of engine coolant followed by negating battery connection. Uninstall the Engine Cover Sub-Assembly No. 1 by removing its two retaining nuts. Disassembly of the air cleaner cap sub-assembly requires connecting the detachment of the mass air flow meter connector and VSV connector followed by unscrewing the wire harness clamp and disconnection of ventilation hose No. 2 from the cylinder head cover and fuel vapor feed hose No. 1 from the VSV then fuel vapor feed hose No. 2 from the throttle body along with air cleaner hose No. 1 from the throttle body. The final step involves unfastening the 2 hook clamps for air cleaner filter element removal from the air cleaner case. Proceed by removing the throttle body assembly though disconnecting water by-pass hoses and throttle body hose No. 1 together with throttle control motor connector and wire harness clamp followed by fuel tube from its clamp and removal of 4 bolts securing fuel pipe support before removing the throttle body and losing its gasket from intake manifold. To complete the installation fit a new gasket onto the intake manifold before attaching the throttle body and fuel pipe clamp with 4 bolts that need to reach 30 N.m (305 kgf.cm, 22 ft.lbf) torque while placing the fuel tube into the clamp and finally installing the wire harness clamp. The throttle body hose No. 1 needs to be connected with the throttle control motor connector while adjusting both water by-pass hoses to match their installed paint mark and hose clamp angle. The air cleaner filter element should receive proper directional placement before you install the hinge part into the air cleaner case while securing the 2 hook clamps. The matchmarks on the air cleaner hose No. 1 must face the throttle body before connecting and loosening the hose clamp No. 1. After connecting the fuel vapor feed hoses to throttle body and VSV and ventilation hose No. 2 to cylinder head cover users must install wire harness clamp and VSV connector and mass air flow meter connector. Rephrase the following sentence. Connect the battery negative terminal at 5.4 N.m (55 kgf.cm, 48 in.lbf) then add engine coolant before inspecting for leaks followed by installing the engine cover sub-assembly No. 1 with 2 nuts torqued to 7.0 N.m (70 kgf.cm, 62 in.lbf).
• Throttle Body
  22030-0H031
  Q: How to remove the throttle body on Scion tC?

  A:

  Draining the engine coolant represents the first step when removing the throttle body from the 2AZ-FE engine control system. You should disconnect the negative cable while waiting 90 seconds before Air Bag and seat belt pretensioner activation occurs. You must remove the engine cover through delayed removal of its 2 fastening nuts. Familiarize with the throttle body by disconnecting the mass air flow meter connector and purge VSV connector before loosening the wire harness clamp point which enables you to disconnect and remove the No. 2 ventilation hose from the cylinder head cover and the purge line hose from both purge VSV and throttle body. Begin by turning the No. 1 air cleaner clamp and severing its hose from the throttle body before unhooking both hook clamps and pulling out the air cleaner filter element from the air cleaner case. The throttle body removal requires detachment of the water by-pass hose together with the No. 2 water by-pass hose and the No. 1 throttle body hose from the throttle body. First disconnect the throttle position sensor connector along with its control motor and then remove the clamp covering the wire harness before removing the fuel tube from its clamp. After removing the 4 bolts of the fuel pipe support and throttle body the gasket can be taken off from the intake manifold.