1998-2001 Honda Fourtrax Foreman TRX450S, TRX450ES Factory Service Manual, Page 385Get this manual
ELECTRIC SHIFT PROG RAM (ESP) ELECTRIC SHIFT DOES NOT OPERATE Inspect the following before diagnosing the system- Make Sure th battery is fully charged and in good co nditon- ClutchBlown main or sub fuse
Tu rn the ignition switch Abnormal Shift the ge ar manually using the gear change 1- - Fa ulty transmission or gearsh ift link age 100 {s ectio 911
GEAR CHANGE
Normal Turn the ignition switchOFF" Disco nnect the contro unit 16P (black) connector ith the ignition switch "ON", measur, the voltage between the BlackG re en conn ecto term inal of the wire harness side and body groundOut of range