Throttle Position Sensor (TPS)
Throttle position sensor should input a .5-volt reference signal to TCM at closed throttle. At full throttle, signal should be approximately 4 volts. Voltage should change smoothly as throttle valve is opened and closed. If voltage is not as specified, check throttle position sensor wiring circuit. See WIRING DIAGRAMS . Individual component testing of throttle position sensor is not available from manufacturer.
NOTE:
If problem in throttle position sensor exists, throttle position sensor may set fault code No. 3 in TCM. Refer to FAULT CODE NO. 3
trouble shooting flow chart under DIAGNOSTIC FLOW CHARTS.