Engine Control Module (ECM)

Based on signals from the related switches and sensors, the engine control module (ECM) controls all the following control functions: (Turbo models, SOHC U5 models)
Constant speed control; speed setting control; deceleration control; acceleration control; resume control; manual cancel control; low speed limit control; electronic control throttle control
The engine control module (ECM) (A) is located at the legroom of the front passenger's seat.

Fig 1: Identifying Engine Control Module
Courtesy of SUBARU OF AMERICA, INC.