2006 Honda TRX680 Rincon Factory Service Manual, Page 312Get this manual
DRIVETRAIN SYSTEM 5AT Clutch Pressure Control Solenoid Line Short Circuit Inspection Check the for continuity between the AT clutch pressure control solenoid 2P (Black) connector terminals of the wire harness side and groundConnection: BlueredGround YellowredGround Is there continuity? YES NOShort circuit in the Bluered wire Short circuit in Yellowred wire- GO TO STEP 6ATT CLUTCH PC SOLENOID 2P (BLACK) CONNECTOR (Wire side of female terminal)
6RecheckDTC Turn the ignition switch ON and test-ride the vehicle, then recheck the current DTCIs DTC 4-1 or 4-3 indicated? YES NOReplace the PCM with new one and recheck- Intermittent failure
DTC 4-2 (AT CLUTCH PRESSURE CONTROL SOLENOID HIGH INPUT)