OEM 2005 Toyota MR2 Spyder Throttle Body

2005 Toyota MR2 Spyder Throttle Body Parts Q&A

• Q: How to service and repair the Throttle Body (SMT) on 2005 Toyota MR2 Spyder?

  A: Starting the repair process for the Throttle Body (smt) requires draining engine coolant and eliminating the suspension upper brace followed by disconnecting the vsv for the evap hose and extracting the vsv for the evap with its attached air cleaner hose. The procedure to remove the throttle body begins with accelerator cable removal and continues with unhooking the throttle position sensor connector, throttle control motor connector, pcv hose, two water bypass hoses, then extracting the two bolts and throttle body bracket before removing two bolts, two nuts and throttle body and two gaskets from the intake manifold. Install the throttle body with new gaskets on the intake manifold by using two bolts and two nuts at a torque of 30 n.m (305 kgf.cm, 22 ft.lbf) post connector connection of the accelerator position sensor. The work continues with throttle body bracket installation using two bolts tightened at 49 n.m (500 kgf.cm, 36 ft.lbf). Next, head to the two water bypass hose connection along with the pcv hose. Finally, reconnect the control motor and throttle position sensor connectors before proceeding. The repair process involves connecting the accelerator cable followed by installation of vsv for the evap with the air cleaner hose and vsv for the evap hose. Reinstallation of the suspension upper brace occurs after radiator engine coolant filling. The inspection process involves measuring a resistance of 0.3 to 100 Ohms at 20 degrees Celsius (68 degrees Fahrenheit) between terminals m+ (1) and m- (2) of the throttle control motor and another check of 4.2 to 5.2 Ohms at 20 degrees Celsius (68 degrees Fahrenheit) between terminals cl- (3) and cl+ (4). Plugs the throttle position sensor for examination by testing resolution across terminals vc and e2 at 20 degrees Celsius (68 degrees Fahrenheit) through 1.2 - 3.2 kOhms and runs the same test on the accelerator position sensor. Install the new sensor using proper set screw torques of 2.0 n.m (20 kgf.cm, 18 in.lbf) after adjusting it to its specified position with a throttle valve opening angle of 4°. Use the dlc3 to connect the throttle position sensor connector and a hand-held tester or obd II scan tool before turning on the ignition switch while leaving the accelerator pedal unaffected. Set the throttle valve opening percentage to its standard value of 15.2 plus or minus 0.8%. Check the throttle valve opening percentage one last time to verify standard operation between 10 and 14% while painting the two set screws before switching the ignition off and discontiuing the tester. The accelerator position sensor replacement requires a four-bolt removal followed by sensor reinstallation using those bolts tightened to 5.4 n.m (55 kgf.cm, 48 in.lbf) and verification of the accel pos #1 (vpa) voltage reaches the standard range of 0.3 - 0.9 V after connecting the sensor and the tester. Executively test the operational system after the throttle body replacement.