Giant MY20 User manual

MY20
SERVICE MANUAL

2

3
TABLE OF CONTENTS
1. Intro .......................................................................................................... 5
2. MY20 G-Systems components overview.................................7
3. Tools....................................................................................................... 33
4. Assembly guides .............................................................................. 39
5. Trouble shooting ................................................................................81
6. Supplement......................................................................................... 93

4

5
WELCOME TO THE E-BIKE SERVICE
MANUAL MY20.
This Service Manual contains specific information about the e-bike system
components of recent Giant, Liv & Momentum e-bikes. It is designed to be
used by a workshop mechanic, as a technical guide and reference work for
servicing our E-Bikes.
For information about the basic operation and functionality of e-bikes, please
refer to the regular user manual.
Updated or additional information might become available after the initial
release of this manual. If the provided information is insufficient or missing,
please contact the local Giant Service Team for further assistance.
1. INTRO

6

7
2. MY20 G-SYSTEMS COMPONENTS
OVERVIEW
CHAPTER CONTENTS
2.1 G-System ..................................................................................... 8
2.2 SyncDrive .................................................................................... 9
SyncDrive Pro MY20............................................................................9
SyncDrive Sport .................................................................................. 11
SyncDrive Life .....................................................................................13
2.3 Pedalplus ................................................................................... 15
6-sensor technology.......................................................................... 15
2.4 RideControl ..................................................................................17
RideControl One..................................................................................17
RideControl Evo.................................................................................. 22
RideControl Charge ...........................................................................25
Remote (charge & Evo) ...................................................................... 27
RideControl features overview .........................................................28
2.5 EnergyPak ...................................................................................29
Carrier EnergyPak ..............................................................................29
Side Release EnergyPak ...................................................................29
EnergyPak SMART.............................................................................29
The first charge (all EnergyPaks)......................................................30
EnergyPak range table ......................................................................30
2.6 Charger ....................................................................................... 31
Smart charger......................................................................................31
Storage mode (60% charge function) ..............................................31
Standard fast charger.........................................................................31
Charging duration table..................................................................... 32

8
2.1 G-SYSTEM
G-System is the group name for the different components and technologies
that make a Giant/Liv/Momentum bike an e-bike. It utilizes the CANBUS pro-
tocol for digital communication between these components.
Below a quick overview of the main G-System components:
SYNCDRIVE:
SYNCDRIVE is the motor that provides the power assistance to the rider.
The SyncDrive motors contain the main processing unit and all but one of the
sensors.
There are 3 different types of SyncDrive motors in MY20: Life, Sport & Pro. All
three are updated with the latest 6-sensor technology. For MY20 the output
for lights has also been increased to 9 Watt max. (6V/1.5A).
PEDALPLUS:
PEDALPLUS 6-sensor technology are all the sensors that register various
inputs, like speed, cadence, input torque, motor rotation speed, slope and
acceleration. This gives all SyncDrive motors Smart Assist features, to auto-
matically select an assist level based on all sensor data.
RIDECONTROL:
RIDECONTROL is the control unit on the handlebars. It’s the interface that
gives the user control over the e -bike functions.
• The CHARGE and EVO displays are basically unchanged compared
to previous model years, but did receive some small updates in the
firmware.
The RideControl ONE combines core functionality and visual feedback in a
compact and ergonomic unit with minimalistic aesthetics. For MY20, an ANT+
capability has been added to wirelessly connect to various (3rd party) de-
vices.
ENERGYPAK
The ENERGYPAK is the power source of the system. The Integrated batteries
as introduced last year are completely integrated into the frame, and together
with the 6A Smart Charger they can be charged faster and more efficiently.
For MY20, a more compact, 375Wh battery has been added to the line-up,
and an optional 250Wh range extender is added as an opional accessory to
increase the range even more. Integrated batteries compatible with the range
extender are dubbed EnergyPak Smart (500, 400, 375)
Other batteries used for MY19 are semi-integrated side release type, and
carrier types, with can be charged with the standard 4A Fast Charger.

9
2.2 SYNCDRIVE
SYNCDRIVE PRO MY20
FEATURES:
The SyncDrive Pro motor is designed for performance use. Compared to Syn-
cDrive Sport some specific features are enhanced for performance:
• Light and compact
• Most powerful (360% power ratio)
• Faster engagement and response (more teeth and pawls in clutch
ratchet mechanism)
• Increased max cadence
• 128mm wide Hollow BB axle with ISIS interface
SMART ASSIST:
Each MY20 SyncDrive Motor is equipped with PedalPlus 6-sensor tech-
nology. Switching the assist level down to off, and then one level further, acti-
vates the Smart Assist function (AUTO mode). The Smart Assist will automat-
ically select the optimal power ratio depending on the input of all six sensors.
While this allows the rider to focus on the ride, it also provides an efficient
power consumption
MAXIMUM
CADENCE MY 19 MY20
Power 120 rpm 170 rpm
Sport 120 rpm 170 rpm
Active 120 rpm 155 rpm
Basic 110 rpm 155 rpm
Eco 110 r p m 155 rpm

10
.TUNING:
The SyncDrive Pro motor provides a power ratio of in a range of 0- 360%. The
RideControl displays have 5 default modes to choose from, that correspond
to 5 power ratio presets in the motor. These modes can be custom tuned, by
using the RideControl mobile app, which allows the user to select a different
power ratio for each mode. More information about the RideControl app can
be found in the app manual.
MOTOR FIRMWARE:
The motor firmware has several layers of programming, that could be de-
scribed as a core layer, a properties layer and a top layer.
The motor’s core firmware and properties are written during the manufac-
turing stage, and are not accessible to any others beyond this stage. Only the
top layer of the firmware is partly accessible to dealers and users, through
the app, to allow the tuning of the power ratios. Dealers have read access to
certain information stored in the motor, like error codes and motor ODO, by
using the Giant Service Tool software and dongle.
SENSORS:
The MY20 SyncDrive Pro motor uses PedalPlus 6 sensor technology to op-
erate: Speed, pedaling torque, pedaling cadence, motor rpm, slope & accel-
eration. More information about the sensors can be found in the PedalPlus
chapter further on in this manual.
CONNECTIONS:
The SyncDrive motor is a central part of the G-system and is connected to all
the other G-System parts, like the RideControl display and EnergyPak. There
are 3 connectors coming directly from the motor:
1. Main Power wire:
2 pin large connector
Red and Black wires (+ and -)
2. Speed Sensor wire:
3 Pin connector
Green, Dark blue, red wire
3. Main communication signals and 5-6V output wires
8 pin connector
Black, Red, White, Dark Blue, Orange, Green, Brown, Pink wire
Please notice: Most signal or power wires are split and routed to other
components via other wires. For example, the 8 pin connector will split into
several connections including the RideControl connector and front and/or rear
light power supply. See the pages on wiring for more details.
ASSEMBLY OF THE SYNCDRIVE PRO MOTOR:
See the SyncDrive Pro motor assembly guide for more details.
12
3
1
2 3

11
SYNCDRIVE SPORT
FEATURES:
The SyncDrive Sport motor is designed for all-round performance. It is
applied on various models ranging from MTB, trekking, commuter and city
bikes. Some core features are:
• Powerful: 70Nm Torque (max 350% power ratio)
• Linear support profile (natural and smooth)
• High max cadence (140 rpm)
• Square taper (JIS) BB axle
SMART ASSIST:
Each MY20 SyncDrive Motor is equipped with PedalPlus 6-sensor tech-
nology. Switching the assist level down to off, and then one level further, acti-
vates the Smart Assist function (AUTO mode). The Smart Assist will automat-
ically select the optimal power ratio depending on the input of all six sensors.
While this allows the rider to focus on the ride, it also provides an efficient
power consumption.
MAXIMUM
CADENCE MY 19 MY20
Power /
Sport+ 110 r pm 140 rpm
Sport 110 rpm 140 rpm
Normal 110 rpm 130 rpm
Eco+ 110 rpm 130 rpm
Eco 110 r p m 130 rpm

12
TUNING:
The SyncDrive Sport motor provides a power ratio of in a range of 0- 350%.
The RideControl displays have 5 default modes to choose from, that corre-
spond to 5 power ratio presets in the motor. These modes can be custom
tuned, by using the RideControl mobile app, which allows the user to select a
different power ratio for each mode. More information about the RideControl
app can be found in the app manual.
MOTOR FIRMWARE:
The motor firmware has several layers of programming, that could be de-
scribed as a core layer, a properties layer and a top layer.
The motor’s core firmware and properties are written during the manufac-
turing stage, and are not accessible to any others beyond this stage. Only the
top layer of the firmware is partly accessible to dealers and users, through
the app, to allow the tuning of the power ratios. Dealers have read access to
certain information stored in the motor, like error codes and motor ODO, by
using the Giant Service Tool software and dongle.
SENSORS:
The SyncDrive Sport motor uses PedalPlus 6 sensor technology to operate:
Speed, pedaling torque, pedaling cadence, motor rpm, slope & acceleration.
More information about the sensors can be found in the PedalPlus chapter
further on in this manual.
CONNECTIONS:
The SyncDrive motor is a central part of the G-system and is connected to all
the other G-System parts, like the RideControl display and EnergyPak. There
are 3 connectors coming directly from the motor:
1. Main Power wire:
2 pin large connector
Red and Black wires (+ and -)
2. Speed Sensor wire:
3 Pin connector
Green, Dark blue, red wire
3. Main communication signals and 5-6V output wires
8 pin connector
Black, Red, White, Dark Blue, Orange, Green, Brown, Pink wire
Please notice: Most signal or power wires are split and routed to other
components via other wires. For example, the 8 pin connector will split into
several connections including the RideControl connector and front and/or rear
light power supply. See the pages on wiring for more details.
ASSEMBLY OF THE SYNCDRIVE SPORT MOTOR:
See the SyncDrive Sport motor assembly guide for more details.
12
3
1
2 3

13
SYNCDRIVE LIFE
FEATURES:
The SyncDrive Life motor is designed for recreational and leisure riding. It is
applied mostly on models with hub gears and low instep frames. Some core
features are:
• PedalPlus 6-sensor technology
• Smart Assist function (automatic optimal power ratio selection)
• Capable: 60Nm Torque (max 300% power ratio)
• Quiet: 5x quieter than the previous version
• Linear support profile (natural and smooth)
• High max cadence (110 rpm)
• Square taper (JIS) BB axle
SMART ASSIST:
Each MY20 SyncDrive Motor is equipped with PedalPlus 6-sensor tech-
nology. Switching the assist level down to off, and then one level further, acti-
vates the Smart Assist function (AUTO mode). The Smart Assist will automat-
ically select the optimal power ratio depending on the input of all six sensors.
While this allows the rider to focus on the ride, it also provides an efficient
power consumption.
TUNING:
The SyncDrive Life motor provides a power ratio of in a range of 0- 300%.
The RideControl displays have 5 fixed modes to choose from, that corre-
spond to 5 power ratio presets in the motor. Also on the new Life motor,
these modes can be custom tuned, by using the RideControl mobile app,
which allows the user to select a different power ratio for each mode. More
information about the RideControl app can be found in the app manual.

14
MOTOR FIRMWARE:
The motor firmware has several layers of programming, that could be de-
scribed as a core layer, a properties layer and a top layer.
The motor’s core firmware and properties are written during the manufac-
turing stage, and are not accessible to any others beyond this stage. Only the
top layer of the firmware is partly accessible to dealers and users, through
the app, to allow the tuning of the power ratios. Dealers have read access to
certain information stored in the motor, like error codes and motor ODO, by
using the Giant Service Tool software and dongle.
SENSORS:
The SyncDrive Life motor uses PedalPlus 6 sensor technology to operate:
Speed, pedaling torque, pedaling cadence, motor rpm, slope & acceleration.
More information about the sensors can be found in the PedalPlus chapter
further on in this manual.
CONNECTIONS:
The SyncDrive motor is a central part of the G-system and is connected to all
the other G-System parts, like the RideControl display and EnergyPak. There
are 3 connectors coming directly from the motor:
1. Main Power wire:
2 pin large connector
Red and Black wires (+ and -)
2. Speed Sensor wire:
3 Pin connector
Green, Dark blue, red wire
3. Main communication signals and 5-6V output wires
8 pin connector
Black, Red, White, Dark Blue, Orange, Green, Brown, Pink wire
Please notice: Most signal or power wires are split and routed to other
components via other wires. For example, the 8 pin connector will split into
several connections including the RideControl connector and front and/or rear
light power supply. See the pages on wiring for more details.
ASSEMBLY OF THE SYNCDRIVE LIFE MOTOR:
See the SyncDrive Life motor assembly guide for more details.
12
3
1
2 3

15
2.3 PEDALPLUS
6-SENSOR TECHNOLOGY
From MY20, Giant uses 6-sensor technology on the new Life, Sport and Pro
motors.
1. PEDALING TORQUE SENSOR
The torque sensor is mounted on the BB axle. It measures the force that the
rider is applying on the pedals.
2. PEDALING CADENCE SENSOR
The cadence sensor is mounted on the BB axle. It measures the rotation
speed of the axle.
3. SLOPE SENSOR
The slope sensor is mounted on the circuit board. It measures the bicycle’s
current angle as opposed to horizontal.
4. ACCELERATION SENSOR
The acceleration sensor (accelerometer) is mounted on the circuit board. It
detects whether the bicycle is accelerating or decelerating.
5. MOTOR ROTATION SENSOR
The motor rotation sensor is integrated into the electro motor itself. It meas-
ures the rotation speed of the motor.
6. EXTERNAL SPEED SENSOR
The speed sensor is placed on the inside of the rear chainstay, and a magnet
is placed on a spoke in the rear wheel. Speed is calculated by the RideCon-
trol based on the wheel rotation speed.
6. INTEGRATED SPEED SENSOR
New in MY20 is the integrated speed sensor. This sensor works the same as
the external sensor, but is integrated into the left rear dropout. The magnet is
mounted on the disc-brake rotor using 2 of the 6 rotor mounting bolts.

16
SMART ASSIST
The six separate sensor signals are processed by the G-System software,
which optimizes the motor output while riding within any set assist mode. The
Smart Assist mode (Auto) goes a step further, by using the sensor data to
continuously adjust and balance the power ratio automatically between the
available 50-360% (depending on motor type).
So for example, when coming from cruising on a flat, at an economic 50%
power ratio, into an short uphill, the power ratio will automatically increase to
a higher support ratio, up until the maximum 300-360% if necessary. When
the gradient eases a little, so will the power ratio. This results in a very effi-
cient battery power consumption and allows the rider to set the mode once
and just enjoy the ride with optimized support in all circumstances.
SENSOR ERRORS
If any of the sensors is transmitting an abnormal signal, this should usually
result in an error message by the system. An error in an internal sensor will
show up on the RideControl as a “SyncDrive Error”.
Detailed information about the error is stored in the motor memory. Always
use the Service Tool software to test and create a pdf export of the extensive
test results, where the precise error codes are displayed. The integrated
Service Tool manual contains a table of all error codes and short description
of the error. Make sure this information is available when contacting the
service department for support.

17
2.4 RIDECONTROL
RIDECONTROL ONE
The RideControl One is a new RideControl unit in a minimalistic design. It has
all the important controls, large ergonomically placed buttons, and integrated
clear visual feedback using bright LED lights.
ANT+
In MY20, ANT+ connectivity is added to the RideControl One. Bike computers
and other devices that support the ANT+ LEV (Light Electric Vehicle) profile
can display various E-bike fields, like battery capacity, remaining range and
assist level. If the RC One has the ANT+ logo on it, these features are sup-
ported. Consult the device manufacturers information for supported data
fields and how to pair the e-bike.
BUTTONS
5 PHYSICAL BUTTONS OF RIDECONTROL ONE:
On/Off button Short press to turn on the system
Long press (3 sec.) to turn system off.
Assist UP button Press to increase assist level. (In Walk Assist mode, press to activate
walk assist.)
Assist DOWN button Press to decrease assist level.
Walk Assist button
Press to unlock Walk Assist mode for 3 seconds. Press “Assist Up” but-
ton within 3 seconds to activate walk assist. (Walk Assist strength and
speed depend on current assist level and gear ratio.)
Light/Mode button
Long press to switch Lights On/Off (If lights are connected to the system)
Short press to toggle between options (On an external bluetooth acces-
sory)
Assist Down
Walk Assist
Light (long press)
Mode (short press)
On (short press)
Off (long press)
Assist Up

18
LED INDICATORS:
BATTERY CHARGE LEVEL INDICATOR
The row of 5 LEDS (B1 - B5) located near the edge of the RideControl One
indicate the battery charge level. Each LED represents a block of approx.
20% battery charge. So when all battery LEDS are on, this would mean that
the battery is charged to about 80-100%.
When the charge level drops below 10%, the bottom LED (B1) will turn from
white to orange. Finally, when the charge level drops below 3%, the bottom
LED (B1) will also start blinking (still orange).
CHARGING
When the charger is connected to the battery on the bike, the RideControl
One will not show any indication of the charging process. The lights on the
charger will indicate the charging status.
B5
B4
B3
B2
B1
B1

19
ASSIST LEVEL INDICATOR
The row of 5 LEDS (L1 - L5) located next to the Assist UP/DOWN buttons
indicate the selected assist level. More lights on means more power assist.
When all assist lights are off, the motor assist will be off.
SMART ASSIST INDICATOR
Press Assist Down button a few times down to Assist OFF, and 1 press more
to activate the Smart Assist function. On the assist level indicator only the
middle LED (L3) will be on, to indicate Smart Assist is active.
LIGHT INDICATOR
The light indicator LED (LT) The light indicator LED (LT) will light up in white
color when the light is switched ON. Also, the brightness of all LEDs will be
reduced.
L5
L4
L3
L2
L1
L3
Assist
DOWN
LT

20
ERRORS
In the case of an error, the RideControl One will indicate with the LT LED
blinking in red that there is an error, and one of the white Assist LEDS (L1, L2,
L3 or L5). will blink to show which component the error is related to. Below an
overview of the errors the RideControl One can show.
Use the Service Tool Software to diagnose the error and generate an exten-
sive report to learn more.
LED STATE COLOUR ERROR
LT Blinking Red On all errors
+
L5 Blinking White System overheating protection
L4 - - none
L3 Blinking White Speed sensor issue
L2 Blinking White SyncDrive issue
L1 Blinking White Battery issue
SERVICE TOOL
When connected to the Service Tool Software, RideControl One will show the
middle 3 LEDs (L3,LT,B3) to indicate the connection is active. Follow the
instructions in the Service Tool. When testing is finished and the RideControl
is disconnected by the Service Tool, the RideControl One will be on in the
normal riding state.
LT
L5
L3
L2
L1
B3
LT
L3