1998-2001 Honda Fourtrax Foreman TRX450S, TRX450ES Factory Service Manual, Page 393Get this manual
ELECTRIC SHIFT PROGRAM (ESP) ELECTRI.C SHIFT DOES NOT OPERATE WHEN ENGAGING THE REVERSE GEAR Inspect the fol lowing before diagnosing the systemMake sure the battery is fully charged and in good conditlon- Clutch adjustment- Blown main or sub fuse Turn the ignition switch Shift the gear manually uSfng, the gear change tooll
Abnormal
Faulty transmission or gearshift linkage (section 9l1}
GEAR CHANGE
Norma Inspect the reverse shift sw itch (page 21-17)
Abnormal fFau lty reverse shift switch
Normal Disconn,e.ct the control unit 16P and reverse shift Abnormal switch 2P (red) connectorf- - Open circuit in related ire Loose or poor contacts of re lated termina l! Check for continu ity between the cont rol unit 16P connector and :reverse shift 2P red) connector terminal of the ire harfiess sideCONNECTION: GravRedGrcayRed