OEM 2005 Toyota Prius Throttle Body

2005 Toyota Prius Parts Questions & Experts Answers

• Q: How to replace the throttle body on 2005 Toyota Prius?

  A: A replacement of the throttle body requires initial steps that involve disassembly of the radiator support opening cover through removal of its 6 clips followed by the engine under cover LH. Start by draining the engine coolant before removing rear floor board No. 2 together with the deck floor box rear and rear floor board No. 3. Begin by disconnecting negative engine wire No.3 (at the battery terminal) and proceed to remove the air cleaner assembly by disconnecting the mass air flow meter connector and unfastening the wire harness from its clamp before loose clamp bolt to detach air cleaner inlet No.1 followed by removing the 2 bolts and separarting the air cleaner through its disjointed clamp bolt. The throttle with motor body assembly removal starts with disconnecting ventilation hoses, fuel vapor feed hose No. 1, water by pass hoses, throttle control motor connector, and throttle position sensor connector before removing the bolt and 2 nuts to take off the throttle with motor body and gasket from the intake manifold. Install a new gasket onto the intake manifold then install the throttle with motor body assembly while tightening the bolt and 2 nuts to 20 Nm (204 kgf.cm, 15 ft.lbf). Next reconnect the throttle position sensor and throttle control motor connectors followed by water by pass hoses, fuel vapor feed hose No. 1 and ventilation hoses. Reinstall the air cleaner assembly by torquing the 2 bolts up to 7.0 Nm (71 kgf.cm, 62 in.lbf) and then tight the hose clamp bolt to 3.0 Nm (31 kgf.cm, 27 in.lbf) before connecting air cleaner inlet No. 1 with its clamp bolt also reconnecting the mass air flow meter connector. When engine wire No. 3 is reconnected to the battery negative terminal the mechanic should check and refill engine coolant while searching for fluid leaks. The next steps include installing rear floor board No. 3 and deck floor box rear followed by rear floor board No. 2 and engine under cover LH and radiator support opening cover. The power window control system needs to be initialized before completion.