4-4
Troubleshooting
Service
Data
Symptom
Check point/method
Possible cause/check Part replacement/action
All segments of the assist
mode display and battery
capacity indicator are flash ing
alternately, and “Er” is
displaying on the speedome-
ter section.
Check the error log according
to the display on the display
unit when the error occurred.
(See Chapter 2 “How Drive
Unit malfunctions are
displayed”.)
Drive Unit assembly error.
Check “List of error codes and
corresponding power assist
operations”.
Replace parts according to
“List of error codes and
corresponding power assist
operations”.
One of the assist mode lamps
in the display unit
1
is
flashing.
Speed sensor set
(See Chapter 2 “How speed
sensor malfunctions are
displayed”.)
A state persists where the
speed sensor unit cannot
detect the signal correctly.
Inspect the speed sensor set
lead wires, pick up, and
mag net sensor spoke type.
Although the power to the
display unit is turned on, all
segments turn on for 4
sec onds, and then the power
turns off automatically.
Battery pack signal lead wires
(See Chapter 2 “When the
battery pack signal lead wire
becomes disconnected”.)
Disconnection of signal lead
wires in the battery pack.
Replace the lead wires for the
DC plug or the power supply.
Alternately
flashes
1
after
4 seconds
