1997-2004 Honda Fourtrax Recon TRX250TE/TM Service Manual, Page 346Get this manual
ELECTRIC SHIFT PROGRAM (After 2001TE model) Connect the ECU 22P (Black) connector Measure the input voltage between the BlackRed (+) and BlueGreen terminals of the angle sensor 3P connector with the ignition switch turned
to "ON"STANDARD: 4.75.3 V
If the input voltage is abnormal, or if there is no input voltage, check or an open or short circuit in the wire harness, or loose or poor connections in the wire harness
REMOVAL
Remove the two bolts and sensor coverDisconnect the 3P connector