WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Locating Throttle Position Sensor, Idle Air Control Motor & PCM
Courtesy of DAIMLERCHRYSLER CORP.
1 - IAC
2 - PCM
3 - TPS
The throttle body mounts to the intake manifold. The throttle position sensor and idle air control motor attach to the throttle body.