Throttle Position (TP) Sensor
- Disconnect TP sensor connector. Turn ignition on. Measure voltage between TP sensor connector terminals No. 1 and 2, and terminals No. 1 and 3. See Fig 1
. If 4.5-5.5 volts is not present, check for faulty wiring or ECM.
- If 4.5-5.5 volts is present, measure resistance between TP sensor connector terminals No. 1 and 2 (component side). Resistance should be 1500-2600 ohms. With throttle closed, measure resistance between TP sensor connector terminals No. 2 and 3 (component side). Resistance should be 750-1300 ohms.
- Slowly open throttle to fully open position. Resistance should increase to 3600 ohms maximum. If resistance is as specified, TP sensor is okay. If resistance is not as specified, replace TP sensor.
Courtesy of AUDI OF AMERICA, INC.