Impreza 2.5 RS Sedan AWD F4-2.5L SOHC (2002)
Control Module: Description and Operation
2. Transmission Control Module (TCM)
The TCM receives various sensor signals and determines the running conditions of the vehicle. It then sends control signals to each solenoid according
to the preset gearshift characteristic data, lock-up operation data, and transfer clutch torque data (duty ratios).
