Electric Shift Program (Esp: Te/Fe Model) Troubleshooting ('00 '02) - Honda TRX350TM Rancher Service Manual

ELECTRIC SHIFT PROGRAM (ESP: TE/FE models)
TROUBLESHOOTING ('00 '02)
TROUBLESHOOTING FEATURE
When the ECU detects a system abnormality, it has a built-in self-diagnostic function that stops the Electronic Shift (ES)
activity or resets the system entirely (just as when the ignition switch is turned from ''OFF'' to ''ON''). The ECU does not have
the capability to inform the operator of the cause of the abnormality, except that the ES function stops immediately when the
ECU detects a failure condition.
When the ECU is in ''failure'' mode, the shift function is immediately deactivated and will remain so until the ignition switch
is turned to ''OFF''. When the ignition switch is turned back to ''ON'', the ECU will be reactived unless it immediately detects
another fail condition. If the ECU does not immediately detect a fail condition, the operator can then document the conditions
that lead to another ''failure'' mode.
BEFORE TROUBLESHOOTING
When the operator detects the abnormality, check the following before proceeding with the diagnosis:
Make sure the battery is fully charged and in good condition.
Make sure the clutch is adjusted properly.
Ask the operator about the following.
1. How often did the abnormality occur.
2. Vehicle speed, road situation (level, climbing and etc.), engine revolution
3. Mileage
4. Clutch maintenance history
The gear position indicator can indicate '' '' when the engine is stopped.
When the engine is running, the indicator may indicate '' '' under very limited conditions. This is just a temporary
symptom and occurs when shifting the transmission while the engine speed is high. When this occurs, throttle-back to
decrease engine speed and then shift the transmission. The proper gear position will then appear on the display (it will
replace the '' ''). Be aware that this is not a problem, and in fact seldom occurs.
Procedure for ''Fail'' recurrence
Attempt to recreate the ''Fail'' situation from information from the operator and record the vehicle speed, engine revolution
and shift position. Proceed with the diagnosis from this information.
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