2004-2006 Honda FourTrax Rancher TRX350TE/TM/FE/FM Service Manual, Page 405Get this manual
ELECTRIC SHIFT PROGRAM (ESP: TEFE model) Problem Code 2: ES Switch System (Up and Down)
1ECU and Gear Shift Switch Connection Inspection
Check the connections of the ECU and hand lebar switch connectors
Are al connections OK?
NO YESLoose or poor connections in ECU or hand lebar switch connectorsGO TO STEP 2
2Shift Switch Inspection at ECU Connector
Disconnect the ECU connector (22P Brown)Check fo continuity at the wire harness side connector whi le pushing the shift switches up or downConnections: Shift up switch: BlackredWhiteblue Shift down switchBlackredWhiteyellow
Is there continuity?
NO YESGO TO STEP 3- GO TO STEP 5
3Handlebar Switch Housing Inspection
Check for mud or water in the left handlebar switch housing
Is there water or mud in the handlebar switch housing?