OEM 2005 Scion tC Throttle Body

2005 Scion tC Throttle Body Parts Q&A

• Q: How to service and repair the throttle body assembly on 2005 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).