1997-2004 Honda Fourtrax Recon TRX250TE/TM Service Manual, Page 337Get this manual
ELECTRIC SHIFT PROGRAM (After 2001: TE modell Problem Code 1: ECU (writing and recording circuit) Delete the problem code numberCheck the ES system failure (the1st" gear indicator blinks) when turning the ignition switch from "OFF" to "ON", Blinks Replace the ECU with new one and troubleshoot again
No blinks
No problem (temporary failure )
Problem Code 2: ES Shift Switch System (Up And Down)
Check the connectors of the ECUgear shift switch and related circuit-Abnormal Loose or poor connections in related circuit
Disconnect the ECU connector (22 PBlack)Check for continuity at the wire harness side connector while pushing the shift switches up or downCONTROL NIT
Abnarmal -
Check for mud or water in the left handlebar switch housing
Abnormal
Clean the left handlebar switch housing