OEM 2004 Scion xA Throttle Body

2004 Scion xA Throttle Body Parts Q&A

• Q: How to service and repair the throttle body on 2004 Scion xA?

  A: A driver should begin throttle body servicing and repairs by draining engine coolant. The air cleaner service begins with unfastening connections for the mass air flow meter connector along with VSV connector and wire harness clamp and fuel vapor feed hoses No. 1 and No. 2 and ventilation hose before unlocking the 2 clamp hooks then loosening the hose clamp to extract the air cleaner cap and filter element followed by removing the 4 bolts securing the air cleaner case. Unfasten the nut connecting parts of the accelerator control cable assembly. Separated transmission oil level gauge and oil filler tube assemblies by disconnecting throttle position sensor wire along with hose and unthreading clamp bolt and oil cooler tube but also disconnecting transmission oil pipe and its O-ring to remove. The procedure to remove throttle body assembly starts by disconnecting ISC valve connector and throttle position sensor connector (M/T transaxle) before removing the wire harness clamp and the bolt and 2 nuts to separate the accelerator control cable bracket and throttle body while also removing the gasket from the intake manifold and disconnecting water bypass hoses. Workplace requires the removal of ISC valve through 3 screw and gasket extraction followed by throttle position sensor removal operated through 2 screws. The throttle position sensor needs to be installed with closed throttle valve position while rotating it 45 degrees clockwise before tightening it to 2.0 N.m (20 kgf.cm, 17 in.lbf). Place a new gasket on the throttle body followed by installing the ISC valve through its three screws while torquing to 3.4 N.m (35 kgf.cm, 30 in.lbf). The installation involves connecting water bypass hoses while using a new intake manifold gasket before bolt and nut installation of the throttle body and accelerator control bracket which requires 30 N.m (306 kgf.cm, 22 ft.lbf) torque followed by wire harness clamp and throttle position sensor connector (M/T transaxle) and ISC valve connector. Connect and tighten the transmission oil filler tube sub-assembly using a new O-ring, bolt, 5.5 N.m torque (56 kgf.cm, 49 in.lbf) and the oil cooler tube clamp with the bolt at 5.5 N.m (56 kgf.cm, 49 in.lbf) followed by hose and throttle position sensor connector. The technician should install the transmission oil level gauge sub-assembly and then the accelerator control cable assembly while torquing both components to 13 N.m (133 kgf.cm, 10 ft.lbf). You will complete the air cleaner installation by using three bolts to join the air cleaner case to its bracket with 7.8 N.m torque (80 kgf.cm or 69 in.lbf) before fastening the inlet to the engine compartment using a bolt torqued to 7.5 N.m (76 kgf.cm or 66 in.lbf). Engine coolant addition follows then a leak check must be performed.