2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 46Get this manual
TECHNICAL FEATURES
PCM (POWERTRAIN CONTROL MODULE)
The engine and drivetrain systems of this model are controlled by the peM; the ECM (Engine Control Module) and reM (Transmission Control Module) are integrated into the PCMThe peM controls the following systems:
Engine management systemPGM-FI systemIgnition systemCooling fan control system Drivetrain systemAfT (Automatic Transmission) system
- Selectable 4WD system