The 2002 Camry has electronic throttle control, no IAC.
Operation
General
The ECM drives the throttle control motor by determining the target throttle valve opening in accordance
with the respective vehicle operating condition.
Idle Speed Control
Shift Shock Reduction Control
Cruise Control
Idle Speed Control
Controls the ECM and the throttle valve in order to constantly effect ideal idle speed control.
The early Benz electronic throttles were somewhat of a hybrid
There was a cable going from the accelerator pedal to the accelerator pedal position sensor, which was under the hood. And the throttle body was motorized, no cables, no separate TPS or IAC