2004-2006 Honda FourTrax Rancher TRX350TE/TM/FE/FM Service Manual, Page 399Get this manual
ELECTRIC SHIFT PROGRAM (ESP: TEFE model)
SERVICE INFORMATION
GENERAL
When checking the Electric Shift Program (ESP) systemalways follow the steps in the troubleshooting flowchart (page 22-6) The ESP parts can be serviced with th engine installed in the frame The ECU may be damaged if droppedAlso, if the connector is disconnected when current is flowingthe excessive volt age may damage the ECU Always turn off the ignition switch before disconnecting or connecting the connectors Use digital tester for ESP system inspection See page 21-14 for vehicle speed sensor and gear position switch inspection