Yamaha PASC4 Owner's Manual page 112

Symptom
(Display A2)
The speed is not displayed even while
riding, and the function display is flashing.
(Power assist will decrease.)
(Display B)
The speed is not displayed even while
riding, and an error description is
indicated in the function display. (Power
assist will decrease.)
(Display C)
The speed is not displayed even while
riding, and an error description is
indicated in the function display. (Power
assist will decrease.)
(Interface X)
Assist mode indicator and battery capacity
indicator will flash. Flashing lamp depends
on the situation at that time. (Power assist
will decrease.)
Check
The speed sensor cannot
detect a correct signal.
Turn off the power to the
Display Unit and then turn
it on again.
Select the assist mode and
then ride for a short
distance.
Also, make sure the magnet
is mounted correctly.
The e-Bike Systems have a
function for detecting
unauthorized
modifications. If any
modifications are detected,
the same symptom will
appear. If the bicycle has
been modified, return it to
the original state.
108
Action