4-5
Troubleshooting
Service
Data
Symptom
Check point/method
Possible cause/check Part replacement/action
Charged the battery pack, but
the residual battery capacity
display lamp on the display
unit does not show [FL].
Was the charging started
immediately after driving, or
when the battery pack
tem perature was high?
Recharge the battery in a
location where the tempera-
ture is suitable for charging (0
to 45°C).
All four residual residual
bat tery capacity display lamp
on the battery pack are slow
flashing simultaneously while
charging the battery pack.
This is not a malfunction.
On standby for charging.
The charging will start once
the internal temperature of
the battery pack is within the
0 to 45°C range.
When pressing the battery
capacity indicator button on
the battery pack, all four
bat tery capacity indicator
lamps flash slowly at the
same time.
This is not a malfunction.
See Chapter 2 “Temperature
protection function”.
The battery pack automati-
cally recovers when the
bat tery pack’s internal
temperature returns to the
allowable temperature for
charging.
When pressing the battery
capacity indicator button on
the battery pack, lamps [1]/[3]
and [2]/[4] or [1]/[2] and [3]/[4]
turn on alternately.
Hold down the battery
capac ity indicator button on
the bat tery pack for 10
seconds.
(See Chapter 2 “Recoverable
errors of battery pack or
battery charger”.)
(See Chapter 2 “List of
battery pack/battery charger
diagnosis items”.)
Replace the parts according
to “List of battery pack/battery
charger diagnosis items”.
The battery capacity indicator
lamps [1] and [4] on the
bat tery pack flash simulta-
neously.
Hold down the battery
capac ity indicator button on
the bat tery pack for 10
seconds.
(See Chapter 2 “Non-
recoverable errors of battery
pack”.)
(See Chapter 2 “List of
battery pack/battery charger
diagnosis items”.)
Replace the battery pack.
After disconnecting the
charging plug on the battery
charger from the battery
pack, the battery capacity
indicator lamps continue to
light.
Charging connector on the
battery pack.
Charging connector and
charging plug are wet.
Clean the charging connector
and charging plug, and dry
them.
Abnormal sound is produced
from the Drive Unit assembly.
Assist driving
Abnormal sound is produced
during assist driving.
Check for sprocket wear or
stretched chain
Abnormal sound is produced
when the motor is operating.
Disassemble the Drive Unit.
Inspect the driven gear.
Replace the motor assembly.
Turn the crank.
Turning the crank produces
periodic abnormal sound.
Inspect the housing bearing.
Inspect the bearing.
Turn off the power for manual
pedalling.
Stepping on the pedal
pro duces abnormal sound
and vibration (clicking).
Check the joints.
If further tightening does not
improve the problem, replace
parts.