Yamaha PASC4 User manual

MANUAL
Drive Unit
Display Unit
Battery Pack
Battery Charger
* This manual is original instruction.
* Product and specifications are subject to change without notice.
+Read this manual carefully before operating the system.
This manual should stay with this system if it is sold.

Introduction
These original instructions have been prepared for your Drive Unit, Display Unit, Battery
Pack and Battery Charger.
TIP
This manual is not intended as a comprehensive use, service, repair or maintenance
manual. Please see your dealer for all service, repairs or maintenance. Your dealer may
also be able to refer you to classes, clinics or books on bicycle use, service, repair or
maintenance.
Drive Unit, Display Unit,
Battery Pack, Battery Charger
©2023 by Yamaha Motor Co., Ltd.
C edition, February 2023
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.

Contents
General
warning
p.
1
1.
Electric
bike
components
p.
2
A.
Introduction
p.
2
B.
Consumer
information
p.
2
Drive
Unit
data
recording
p.
2
C.
Location
of
the
warning
and
specification
labels
p.
3
D.
Description
p.
5
E.
e
-
Bike
Systems
p.
6
The
e
-
Bike
Systems
are
designed
to
give
you
the
optimal
amount
of
power
assist.
p.
6
Multiple
power
assist
modes
are
available.
p.
6
Automatic
Support
Mode
is
available.
p.
6
Conditions
that
could
decrease
range
(remaining
assist
distance)
p.
7
F.
Safety
information
p.
8
G.
Instrument
and
control
functions
p.
11
Display
Unit
(Display
A2)
p.
11
Display
Unit
(Display
B)
p.
18
Display
Unit
(Display
C)
p.
38
Display
Unit
(Interface
X)
p.
66
H.
Battery
Pack
and
charging
procedure
p.
79
Appropriate
charging
environments
p.
81
Inappropriate
charging
environments
and
solutions
p.
81
Charging
the
Battery
Pack
mounted
on
the
bicycle
(Down
Tube
Battery)
p.
82
Charging
the
Battery
Pack
mounted
on
the
bicycle
(Multi
Location
Battery,
External
Crossover
Battery)
p.
82
Charging
the
Battery
Pack
removed
from
the
bicycle
p.
84
Reading
the
charging
status
for
Battery
Pack
p.
89
Reading
the
charging
status
for
Display
Unit
(Applies
only
to
models
equipped
with
the
Multi
Location
Battery.)
p.
91
Charging
time
guidelines
p.
94
I.
Checking
the
residual
battery
capacity
p.
95
Residual
battery
capacity
indicator
display
and
estimate
of
residual
battery
capacity
for
Display
Unit
p.
95
Display
of
the
battery
capacity
indicator
lamps
and
the
estimate
of
the
residual
battery
capacity
p.
98
J.
Pre
-
operation
check
p.
101
K.
Cleaning,
maintenance
and
storage
p.
101
Caring
for
the
Battery
Pack
p.
101
Maintenance
for
the
Drive
Unit
p.
102
Storage
p.
102
Long
storage
period
(1
month
or
longer)
and
using
it
again
after
a
long
storage
period
p.
102
L.
Transport
p.
102
M.
Disposal
p.
103
N.
Troubleshooting
p.
104
e
-
Bike
Systems
p.
104
Walk
assist
function
p.
112
Power
supply
of
external
devices
via
USB
connection
p.
113
Wireless
communication
p.
114
Battery
Pack
and
Battery
Charger
p.
115
O.
Specifications
p.
119

General warning
FAILURE TO FOLLOW THE WARNINGS CONTAINED IN THIS MANUAL CAN
RESULT IN SERIOUS INJURY OR DEATH.
Particularly important information is distinguished in this manual by the following
notations:
1
WARNING
This is the safety alert symbol. It is used to alert
you to
potential personal injury hazards. Obey all safety messages
that follow this symbol to avoid possible injury or death.
A WARNING indicates a hazardous situation which, if
not
avoided, could result in death or serious injury.
A NOTICE indicates special precautions that must be taken to
avoid damage to the vehicle or other property.
NOTICE
A TIP provides key information to make procedures easier
or
clearer.
TIP

1. Electric bike components
A.
Introduction
Bluetooth®
The Bluetooth®word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc.
and any use of such marks by YAMAHA MOTOR CO., LTD. is under license.
* Applies to Display C and Interface X.
ANT+
TM
Featuring certified wireless
ANT+
TM connectivity.
Visit www.thisisant.com/directory for compatible products.
* Applies to Interface X.
B.
Consumer information
Drive Unit data recording
This model stores certain Drive Unit data to assist in the diagnosis of malfunctions and for re-
search, statistical analysis and development purposes.
Although the sensors and recorded data will vary by model, the main data points are:
Drive Unit status and Drive Unit performance data
This data will be uploaded only when a special Yamaha diagnostic tool is attached to the Drive
Unit, such as when maintenance checks or service procedures are performed.
Yamaha will not disclose this data to a third party except in the following cases. In addition,
Yamaha may provide Drive Unit data to a contractor in order to outsource services related to the
handling of the Drive Unit data. Even in this case, Yamaha will require the contractor to properly
handle the Drive Unit data we provided and Yamaha will appropriately manage the data.
With the consent of the owner
Where obligated by law
For use by Yamaha in litigation
For general Yamaha-conducted research purposes when the data is not related to an individual
Drive Unit or owner
2

C.
Location of the warning and specification labels
Read and understand all of the labels on your Battery Pack and Battery Charger. These labels con-
tain important information for safe and proper operation. Never remove any labels from your Bat-
tery Pack and Battery Charger:
* The contents of the label affixed to the product might differ from the contents of the label on this
page. Be sure to check the label affixed to the product.
Battery Pack
Down Tube Battery 500
Multi Location Battery 500
External Crossover Battery 500
3

Battery Charger
PASC4
PASC8/PASC11
Familiarize yourself with the following pictograms and read the explanatory text, then make sure
to check the pictograms that apply to each part.
4
How
to
disconnect
the
plug.
1.GRASP
2.PULL
Read Manual Do not disassemble
Do not dispose of in a fire For indoor use only

D.
Description
1 2 3 4 5
6 7 8 9 10
11 12 13 14 15
16
1. Drive Unit (PWseries CE/C2)
2. Drive Unit (PWseries ST)
3. Drive Unit (PW-X3)
4. Drive Unit (PWseries S2)
5. Drive Unit (PW-XM)
6. Speed Sensor Set
a) Spoke magnet
b) Speed sensor
7. Speed Sensor Set
a) Rotor magnet
b) Speed sensor
8. Display Unit (Display A2)
9. Display Unit (Display B)
a) Display (detachable)
b) Display holder
c) Remote switch
10.Display Unit (Display C)
a) Display
b) Clamp
c) Remote switch
11.
Display Unit (Interface X)
a) Communication unit
b) Mounting spacer
c) Remote switch
12.
Battery Pack (Down Tube
Battery 500)
13.
Battery Pack (Multi Location
Battery 500)
14.
Battery Pack (External Crosso-
ver Battery 500)
15.
Battery Charger (PASC4)
16.
Battery Charger
(PASC8/PASC11)
5
c
a
b
b
a
b
a
a
a
c
c
b
b

E.
e-Bike Systems
The e-Bike Systems are designed to give you the optimal amount of
power assist.
It assists you within a standard range based on factors such as your pedaling strength, bicycle
speed, and current gear.
The e-Bike Systems do not assist in the following situations:
When the Display power is off.
When you are moving 20 mph (32 km/h) or faster.
When you are not pedaling.
When walk assist is not operated.
When there is no residual battery capacity.
When the automatic power off function* works.
* Power turns off automatically when you do not operate the e-Bike Systems for 5 minutes.
When the assist mode is set to Off Mode.
When setting the language. (Applies to display B and Display C.)
When the display is removed of display holder. (Applies to display B.)
Multiple power assist modes are available.
Choose from Extra Power Mode*1, High-Performance Mode, Standard Mode, Eco Mode, +Eco
Mode and Off Mode to suit your riding conditions.
See and switching the assist for information on switching between assist modes.
*1 Applies to the Drive Unit (PW-X3, PW-XM).
*2 The Display Unit (Interface X) is displayed by the indicator.
Automatic Support Mode is available.
The Automatic Support Mode, which enables automatic change to the optimal assist mode accord-
ing to the riding conditions, can also be used. The Automatic Support Mode automatically changes
to weak assist on flat roads and stronger assist on steep slopes.
6
Assist mode Display*2 Example of recommended driving environment
Extra Power Mode*1 EXPW Use when climbing rough terrain.
High-Performance
Mode HIGH Use when you want to ride more comfortably, such as when climbing a steep hill.
Standard Mode STD Use when riding on flat roads or climbing gentle hills.
Eco Mode ECO Use when you want to ride as far as possible.
+Eco Mode +ECO
Off Mode OFF Use when you want to ride without power assist. You can still
use the other Display Unit functions.

Conditions that could decrease range (remaining assist distance)
The range (remaining assist distance) will decrease when riding in the following conditions:
Frequent starts and stops
Numerous steep inclines
Poor road surface conditions
When riding together with children
Riding into a strong head wind
Low air temperature
Worn-out Battery Pack
When using the headlight (applies only to models equipped with lights powered by the Battery
Pack)
Frequent acceleration
Heavier rider and luggage weight
Higher assist mode
Higher riding speed
Range (Remaining assist distance) will also decrease if the bicycle is not maintained properly.
Examples of inadequate maintenance that could decrease range (remaining assist distance):
Low tire pressure
Chain not turning smoothly
Brake engaged constantly
7

F.
Safety information
Never use this Battery Charger to charge other electrical appliances.
Do not use any other charger or charging method to recharge the Battery Packs.
Using any other charger could result in fire, explosion, or damage the Battery
Packs.
This Battery Charger can be used by children aged from 8 years and above and
persons with reduced physical, sensory or mental capabilities or lack of experi-
ence and knowledge if they have been given supervision or instruction concern-
ing use of the Battery Charger in a safe way and understand the hazards in-
volved. Children shall not play with the Battery Charger. Cleaning and user
maintenance shall not be made by children without supervision.
Although the Battery Charger is waterproof, never allow it to become immersed
in water or other fluids. In addition, never use the Battery Charger if the terminals
are wet.
Never handle the power plug, charging plug or touch the Battery Charger con-
tacts with wet hands. This could result in electric shock.
Do not touch Battery Charger contacts with metallic objects. Do not allow foreign
material to cause short circuit of the contacts. This could result in electric shock,
fire, or damage the Battery Charger.
Periodically remove dust from the power plug. Dampness or other issues could
reduce the effectiveness of the insulation, resulting in fire.
Never disassemble or modify the Battery Charger. This could result in fire or
electric shock.
Do not use with a power strip or extension cord. Using a power strip or similar
methods may exceed rated current and can result in fire.
Do not use with the cable tied or rolled up, and do not store with the cable
wrapped around the Battery Charger main body. Cable damage can result in fire
or electric shock.
Firmly insert the power plug and the charging plug into the socket. Failure to in-
sert the power plug and the charging plug completely can result in fire caused
by electric shock or overheating.
Do not use the Battery Charger near flammable material or gas. This could result
in fire or explosion.
Never cover the Battery Charger or place other objects on top of it while charg-
ing. This could result in internal overheating leading to fire.
Do not drop the Battery Charger or expose it to strong impacts. Otherwise, it
could cause a fire or electric shock.
Store the Battery Pack and Battery Charger out of reach of children.
Do not touch the Battery Pack or Battery Charger while it is charging. As the Bat-
tery Pack or Battery Charger reaches 104 158 °F (40 70 °C) during charging,
touching it could result in burns.
8

Do not use if the Battery Pack case is damaged, cracked, or if you smell any unu-
sual odors. Leaking battery fluid can cause serious injury.
Do not short the contacts of the Battery Pack. Doing so could cause the Battery
Pack to become hot or catch fire, resulting in serious injury or property damage.
Do not disassemble or modify the Battery Pack. Doing so could cause the Bat-
tery Pack to become hot or catch fire, resulting in serious injury or property dam-
age.
If the power cable is damaged, stop using the Battery Charger and have it in-
spected at a bicycle dealer.
Do not turn the pedals or move the bicycle while the Battery Charger is connect-
ed. Doing so could cause the power cable to become tangled in the pedals, re-
sulting in damage to the Battery Charger, power cable, and/or plug.
Handle the power cable with care. Connecting the Battery Charger from indoors
while the bicycle is outdoors could result in the power cable becoming pinched
and damaged in a doorway or window.
Do not run over the power cable or plug with the wheels of the bicycle. Doing so
could result in damage to the power cable or plug.
Do not drop the Battery Pack or subject it to impact. Doing so could cause the
Battery Pack to become hot or catch fire, resulting in serious injury or property
damage.
Do not dispose of the Battery Pack in a fire or expose it to a heat source. Doing
so could cause fire, or explosion, resulting in serious injury or property damage.
Do not modify or disassemble the e-Bike Systems. Do not install anything other
than genuine parts and accessories. Doing so could result in product damage,
malfunction, or increase your risk of injury.
When stopped, be sure to apply the front and rear brakes and keep both feet on
engage the power assist function, which could result in loss of control and seri-
ous injury.
Do not ride the bicycle if there is any irregularity with the Battery Pack or e-Bike
Systems. Doing so could lead to loss of control and serious injury.
Be sure to check the residual battery capacity before riding at night. The head-
light powered by the Battery Pack will turn off soon after the residual battery ca-
pacity has decreased to where power assisted riding is no longer possible. Rid-
ing without an operating headlight can increase your risk of injury.
Do not start off by running with one foot on a pedal and one foot on the ground
and then mounting the bicycle after it has reached a certain speed. Doing so
could result in loss of control or serious injury. Be sure to start riding only after
you are seated properly on the bicycle seat.
Do not use the walk assist if the rear tire is off the ground. Otherwise, the tire will
turn at high speed in the air and you could be injured.
For Display Unit with detachable display, do not remove the display while riding
the bicycle. Doing so will turn off the power assist, and could result in the bicy-
cle falling over.
9

Do not use the wireless communication functions in areas such as hospitals or
medical institutions where use of electronic equipment or wireless communica-
tion devices are prohibited. Otherwise, this could affect the medical equipment,
etc. and cause an accident.
When using the wireless communication functions, keep the display at a safe
distance from heart pacemakers in use. Otherwise, the radio waves could affect
the heart pacemaker function.
Do not use the wireless communication functions near automatic control equip-
ment such as automatic doors, fire alarms, etc. Otherwise, the radio waves could
affect the equipment and cause an accident through possible malfunction or un-
intentional operation.
Before equipping the bicycle with a Multi Location Battery, make sure that there
is no foreign matter or water in the connector on the bicycle. Otherwise, it could
lead to heat generation, smoke and/or a fire owing to short-circuiting of the ter-
minals.
For bicycles equipped with a Multi Location Battery, do not remove the Battery
Pack from the bicycle when cleaning the bicycle. Otherwise, water could enter
the connector and cause heat generation, smoke and/or a fire.
10

G.
Instrument and control functions
Display Unit (Display A2)
USB port Assist mode
indicator
Speedometer
Automatic Support
Mode indicator
Assist mode
switch (up)
Assist mode
switch (down)
Battery capacity
indicator
Function display
Walk assist
switch Light switch Power switch
TIP
The USB port is for connecting the designated YAMAHA diagnostic tool; it cannot be used as a
power supply.
11

Display Unit (Display A2)
The Display Unit offers the following operations and infor-
mation displays.
Power on/off
Each time you press the power switch, the power is turned
on and off.
When you turn on the power, all of the displays come up.
After that, the main riding display is shown.
TIP
When you turn on the power, the assist mode is auto-
matically set to Off Mode.
Keep your feet off the pedals when turning on the Dis-
play Unit. Also, do not start riding immediately after
turning on the Display Unit. Doing so could weaken the
assist power. (Weak assist power in either of these
cases is not a malfunction.) If you did either of the
above by accident, remove your feet from the pedals,
turn on the power again, and wait a moment (approxi-
mately two seconds) before starting to ride.
Displaying and switching the assist mode
You can select the assist mode by using the assist mode
switches (up) or (down).
The selected assist mode is displayed by the assist mode
indicator.
When you press the assist mode switch (up), the mode
When you press the assist mode switch (down), the
mode changes from to or from
TIP
Bicycles equipped with the PWseries CE, PWseries
C2, PWseries ST, and PWseries S2 Drive Unit have no
Extra Power Mode.
Further pressing of the assist mode switch will not cy-
cle the assist mode selections.
12

Automatic Support
Mode indicator
The Automatic Support Mode, which enables automatic
change to the optimal assist mode according to the riding
conditions, can also be used.
To use the Automatic Support Mode, press the assist
mode switch (up) for 1 second or longer. The Automat-
ic Support Mode indicator will light up and the mode
will be changed to the Automatic Support Mode.
To cancel the Automatic Support Mode, press the as-
sist mode switch (up) for 1 second or longer. The Auto-
matic Support Mode indicator will go off and the Auto-
matic Support Mode will be canceled.
TIP
Even if you press the assist mode switches (up) or (down)
while in Automatic Support Mode, the assist mode cannot
be changed.
PWseries CE Drive Unit
PWseries C2 Drive Unit
PW-X3 Drive Unit
PW-XM Drive Unit
PWseries ST Drive Unit
PWseries S2 Drive Unit
13
Function
Assist
mode
indicator
Automatic
Support
Mode
1 second or
longer
1 second or
longer
Assist
mode
Assist
mode
indicator
HIGH
STD
ECO
+ECO
OFF
Function
Assist
mode
indicator
Automatic
Support
Mode
1 second or
longer
1 second or
longer
Assist
mode
Assist
mode
indicator
HIGH
STD
ECO
+ECO
OFF
1 second or
longer
1 second or
longer
Assist
mode
Assist
mode
indicator
EXPW
HIGH
STD
ECO
+ECO
OFF
Function
Assist
mode
indicator
Automatic
Support
Mode

Speedometer
Battery capacity indicator
Function display
Speedometer
The speedometer displays your bicycle speed (in kilome-
ter per hour or mile per hour). To select the km/mile, see
TIP
If your bicycle speed is less than 2.0 km/h or 1.2 MPH, the
Battery capacity indicator
The battery capacity indicator displays an estimate of how
much capacity is left in the Battery Pack.
Function display
The function display can display the following functions.
Odometer
Trip meter
Range (Remaining assist distance)
Push the assist mode switch (down) for 1 second or long-
er, the display changes as follows:
Odometer Trip meter Range Odometer
You can reset the data for trip meter.
Odometer
This displays the total distance (in kilometers or miles) rid-
den while the power was on.
The odometer cannot be reset.
Trip meter
This displays the total riding distance (in kilometers or
miles) since it was last reset.
When you turn off the power, the data up to that point will
be saved.
To reset the trip meter and begin counting a new total,
press the assist mode switch (up) and assist mode switch
(down) simultaneously for 2 seconds or longer when the
trip meter is displayed.
14

Range (Remaining assist distance)
This displays an estimate of the distance (in kilometers or
miles) that can be ridden with assist on the residual bat-
tery capacity of the Battery Pack installed. If you switch
the assist mode when the range (remaining assist dis-
tance) is displayed, the estimate of the distance that can
be ridden with assist changes.
The range (remaining assist distance) estimate cannot be
reset.
TIP
Actual range (remaining assist distance) changes de-
pending on the riding situation (hills, headwind, etc.)
and as the Battery Pack runs down.
If in is displayed.
Headlight on/off
For models equipped with a headlight or taillight powered
by the Battery Pack, each time you press the light switch,
the headlight and taillight will turn on and off.
TIP
When the power is turned on, the lights will return to the
last on/off setting.
15

km/mile setting
Use the following steps to set the km/mile setting.
1. Make sure that the Display Unit is turned on.
2. Select the odometer display in the function display.
3. Press the assist mode switch (up) and assist mode
switch (down) simultaneously for 2 seconds or longer.
4.
switch.
5. Use the assist mode switches (up) or (down) to set ei-
ther the km or mile unit.
6. While the unit that you want to set is flashing, press the
assist mode switch (down) for 1 second or longer, and
release the switch when the display returns to the main
riding display.
For all setting procedures, be sure to stop the bicycle
and perform the required settings in a safe location.
Otherwise, lack of attention to surrounding traffic or
other hazards could cause an accident.
TIP
The settings cannot be adjusted while riding.
If you do the following during setting, the item that you
are setting will be canceled and the display will return
to the main riding display.
Turning the crank (pedal) in the traveling direction
Turning the rear wheel at 1.2 mph (2 km/h) and more
Pushing the walk assist switch
16
WARNING