Subaru 2002 Impreza Service Manual page 236

TRANSMISSION CONTROL MODULE (TCM)
Automatic Transmission
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).
A: CONTROL SYSTEM
Ordinary lock-up control
Smooth control
Hvdraulic oil temDerature control
2ontrol item
Throttle position sensor
Rear vehicle speed sensor
Front vehicle speed sensor
Engine speed
Inhibitor switch
Throttle position sensor
ATF temDerature sensor
Shift control
-ock-up control
Ordinary shift control
ABS-in-operation control
Hydraulic oil temperature control
Reverse inhibiting control
Shift pattern (Base/Power) select control
Input signal
Throttle position sensor
Rear vehicle speed sensor
Front vehicle speed sensor
Engine speed
Inhibitor switch
ABS signal
Throttle position sensor
Rear vehicle speed sensor
Front vehicle speed sensor
Brake switch
ATF temperature sensor
Throttle position sensor
Rear vehicle speed sensor
Front vehicle speed sensor
Inhibitor switch
Throttle position sensor
Rear vehicle speed sensor
Front vehicle speed sensor
Inhibitor switch
Grade control
Throttle position sensor
Rear vehicle speed sensor
Front vehicle speed sensor
Brake switch
Inhibitor switch
Engine speed
Intake manifold pressure
AT-1 4