2005-2011 Honda Recon TRX250TE/TM service manual, Page 362Get this manual
ELECTRIC SHIFT PROGRAM (ESP: TE model)
SERVICE INFORMATION
GENERAL
When checking the Electric Shift Program (ESP) system, always follow the steps in the troubleshooting flowchart (page 20-6) The ESP parts can be serviced with the engine installed in the frame The ECU may be damaged if roppedAlso, if the connector is disconnected when current is flowing, the excessive voltage may damage the ECU Always turn off the ignition switch before disconnecting or connecting the connectors Check for loose connectors, especially at the shift motor and ECU Ensure that all connectors are clean, dry and free of corrosion (repack with dielectric grease) Use digital tester for ESP system inspection See page 19-9 for vehicle speed sensor and page 19-8 for gear position switch inspection