2000-2003 Honda TRX350 Rancher factory service manual, Page 333Get this manual
ELECTRIC SHIFT PROGRAM (ESP: TEFE models) (From previous page: Normal)
Measure the input voltage of the gearshift switch at the 10P connector (page 21-24)
Abnormal
Open or short circuit in related wire Loose or poor contact of related terminal Faulty ECU
Check for continuity of the gear position switch at the 8P (white) connector (page 20-7)
Abnormal
Faulty gear position switch
Check for continuity between the 8P connector and control unit 22P connector terminals in the same harness colors of the gear position switch
No continuity
Open circuit in related wire Loose or poor contact of related terminal