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1. SERVICE MANUAL
LIT-18616-03-29 6Y9-28197-1N-11
COMMAND
LINK
PLUS

2. Preface
This manual has been prepared by Yamaha primarily for use by Yamaha dealers and their trained
mechanics when performing maintenance procedures and repairs to Yamaha equipment. It has
been written to suit the needs of persons who have the Bronze Technical Certificate of the YTA
(Yamaha Technical Academy) marine or the equivalent basic understanding of the mechanical and
electrical concepts and procedures inherent in the work, for without such knowledge attempted
repairs or service to the equipment could render it unsafe or unfit for use.
Because Yamaha has a policy of continuously improving its products, models may differ in detail
from the descriptions and illustrations given in this publication. Use only the latest edition of this
manual. Authorized Yamaha dealers are notified periodically of modifications and significant
changes in specifications and procedures, and these are incorporated in successive editions of this
manual. Also, up-to-date parts information is available on YDS (Yamaha Dealer System). Additional
information and up-to-date information on Yamaha products and services are available on YDS
(Yamaha Dealer System).
Important information
Particularly important information is distinguished in this manual by the following notations:
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS
INVOLVED!
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 damages to the out-
board motor or other property.
TIP:
A TIP provides key information to make procedures easier or clearer.
COMMAND LINK PLUS
SERVICE MANUAL
©2010 by Yamaha Motor Corporation, U.S.A.
1st Edition, July 2010
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Corporation, U.S.A.
is expressly prohibited.
Printed in U.S.A.
LIT-18616-03-29

3. Contents
General information GEN
INFO 0
Specification SPEC 1
Technical feature and description
TECH
FEA 2
Rigging information RIG
GING 3
Troubleshooting
TRBL
SHTG 4
Electrical system ELEC 5
Digital Electrical Control unit DIGIT
CONT 6
Index
Appendix A

5. GEN
INFO
0
1
2
3
4
5
6
7
8
9
10
A
General information 0
Safety while working .................................................... 0-1
Rotating part .............................................................................. 0-1
Hot part ...................................................................................... 0-1
Electric shock ............................................................................ 0-1
Handling of gasoline .................................................................. 0-1
Ventilation .................................................................................. 0-1
Self-protection ........................................................................... 0-2
Working with crane .................................................................... 0-2
Part, lubricant, and sealant ........................................................ 0-2
Handling of sealant .................................................................... 0-2
Special service tool ................................................................... 0-2
Tightening torque ...................................................................... 0-3
Non-reusable part ...................................................................... 0-3
Disassembly and assembly ....................................................... 0-3
How to use this manual .................................................... 0-4
Manual format ........................................................................... 0-4
Abbreviation .............................................................................. 0-5
Lubricant, sealant, and thread locking agent ................. 0-6
Symbol ...................................................................................... 0-6
Special service tool ........................................................... 0-7

6. 0-1
GEN
INFO General information
Safety while working
To prevent an accident or injury and to pro-
vide quality service, observe the following
safety procedures.
Rotating part
• Hands, feet, hair, jewelry, clothing, personal
flotation device straps, and so on, can
become entangled with internal rotating
parts of the engine, resulting in serious
injury or death.
• Keep the top cowling installed whenever
possible. Do not remove or install the top
cowling when the engine is running.
• Only operate the engine with the top cowl-
ing removed according to the specific
instructions in the manual. Keep hands,
feet, hair, jewelry, clothing, personal flota-
tion device straps, and so on, away from
any exposed moving parts.
Hot part
During and after operation, engine parts are
hot enough to cause burns. Do not touch any
parts under the top cowling until the engine
has cooled.
Electric shock
Do not touch any electrical parts while start-
ing or operating the engine. Otherwise, shock
or electrocution could result.
Handling of gasoline
• Gasoline is highly flammable. Keep gaso-
line and all flammable products away from
heat, sparks, and open flames.
• Gasoline is poisonous and can cause injury
or death. Handle gasoline with care. Never
siphon gasoline by mouth. If you swallow
some gasoline, inhale a lot of gasoline
vapor, or get some gasoline in your eyes,
see your doctor immediately. If gasoline
spills on your skin, wash with soap and
water. If gasoline spills on your clothing,
change your clothes.
Ventilation
• Gasoline vapor and exhaust gas are
heavier than air and extremely poisonous. If
gasoline vapor or exhaust gas is inhaled in
large quantities, it may cause loss of con-
sciousness and death within a short time.
• When test running an engine indoors (for
example, in a water tank) make sure to do
so where adequate ventilation can be main-
tained.

7. 0-2
Safety while working
0
1
2
3
4
5
6
7
8
9
10
A
Self-protection
• Protect your eyes by wearing safety
glasses or safety goggles during all opera-
tions involving drilling and grinding, or when
using an air compressor.
• Protect your hands and feet by wearing pro-
tective gloves and safety shoes when nec-
essary.
Working with crane
• Outboard motors weighing 18.0 kg (39.7 lb)
and over must be carried by a crane.
• Use the wire ropes of adequate strength,
and lift up the outboard motor using the
three-point suspension.
• If the outboard motor does not have three
or more points to be suspended, support it
using additional ropes, or the like, so that
the outboard motor can be lifted and carried
in a stable manner.
Part, lubricant, and sealant
Use only genuine Yamaha parts, lubricants,
and sealants, or those recommended by
Yamaha, when servicing or repairing the out-
board motor.
Handling of sealant
• Wear protective gloves to protect your skin,
when using the sealants.
• See the material safety data sheet issued
by the manufacturer. Some of the sealants
may be harmful to human health.
Special service tool
Use the recommended special service tools
to work safely, and to protect parts from dam-
age.

8. 0-3
GEN
INFO General information
Tightening torque
When tightening nuts, bolts, and screws, fol-
low the tightening instructions provided
throughout the manual. If the tightening order
is not specified, tighten the large sizes first,
and then tighten the small sizes, starting from
the center and moving outward.
Non-reusable part
Always use new gaskets, seals, O-rings, cot-
ter pins, and so on, when installing or assem-
bling parts.
Disassembly and assembly
• Use compressed air to remove dust and dirt
during disassembly.
• Apply specified grease to the contact sur-
faces of moving parts before assembly.
• Check that moving parts operate normally
after assembly.

9. 0-4
How to use this manual
0
1
2
3
4
5
6
7
8
9
10
A
How to use this manual
Manual format
The format of this manual has been designed to make service procedures clear and easy to under-
stand. Use the following information as a guide for effective and quality service.
• Parts are shown and detailed in an exploded diagram and are listed in the component list (see a
in the following figure for an example page).
• The component list consists of part names and quantities, as well as bolt and screw dimensions
(see b in the following figure).
• Symbols are used to indicate important aspects of a procedure, such as the grade of lubricant and
the lubrication points (see c in the following figure).
• Tightening torque specifications are provided in the exploded diagrams (see d in the following fig-
ure), and in the related detailed instructions. Some torque specifications are listed in stages as
torque figures or angles in degrees.
• Separate procedures and illustrations are used to explain the details of removal, checking, and
installation where necessary (see e in the following figure for an example page).
TIP:
For troubleshooting procedures, see Chapter 4, “Troubleshooting.”
5-51
ELEC
Electrical system
A Single engine type
B Twin and triple engine types
3. Check the engine start switch or main
switch for continuity at the engine start
switch coupler.
A Engine start switch
B Main switch
(*1) Engine start switch only
4. Connect the engine start switch or main
switch coupler.
Checking the engine start/stop
button
1. Disconnect the engine start/stop button
coupler.
2. Check the engine start/stop button for
continuity at the engine start/stop button
coupler.
Engine start switch or main switch input
voltage:
Red (R)–Ground
12.0 V (battery voltage)
B
R
b
a
a
B
b
e
A
c
d
c
d
OFF START
ON ON
OFF
Switch
position
Terminal
a b c d e
OFF
ON
START
(*1)
a
b
A
B
C dc
e f
dc
e f
6-4
Gear housing (single engine type [top mount])
0
1
2
3
4
5
6
7
8
9
10
A
Gear housing (single engine type [top mount])
skrameRyt’QemantraP.oN
1hctiwslartueN1
1etalP2
3M2wercshctiwslartueN3 10 mm
5M4wercsgnisuohraeR4 14 mm
1gnisuohraeR5
1raeG6
5M2wercsreniateR7 10 mm
1mraevirD8
1tfahsevirD9
1etalpnoitcirF01
1gnirpS11
1retpadA21
1relloR31
1gnirpS41
1rehsaW51
1tloB61
1pilcriC71
0.4 N·m (0.04 kgf·m, 0.30 ft·lb)
3 N·m (0.3 kgf·m, 2.2 ft·lb)
3 N·m (0.3 kgf·m, 2.2 ft·lb)
1
2 3
3
4
4
5
6
7
8
9
20
10
11
12
13
14
1516
17
18
19
ECM housing (single engine type [top mount]) /
Gear housing (single engine type [top mount])
e
b
c d
a
Safety while working / How to use this manual

10. 0-5
GEN
INFO General information
Abbreviation
The following abbreviations are used in this service manual.
Abbreviation Description
ABYC American Boat and Yacht Council
CAN Controller Area Network
DN Down side
ECM Electronic Control Module
Eng Engine
EUR Europe
EXH Exhaust
F Forward
GPS Global Positioning System
ID Identification
INT Intake
LAN Local Area Network
LED Light Emitting Diode
LPS Lever Position Sensor
Max. Maximum
Mfg./Dlr Manufacturer/Dealer
Min. Minimum
N Neutral
NMEA National Marine Electronics Association
OCV Oil Control Valve
PORT Port side
PTT Power Trim and Tilt
R Reverse
R/C Remote Control (Digital Electronic Control)
SPS Shift Position Sensor
STBD Starboard side
Temp Temperature
UP Up side
YDIS Yamaha Diagnostic System

11. 0-6
Lubricant, sealant, and thread locking agent
0
1
2
3
4
5
6
7
8
9
10
A
Lubricant, sealant, and thread locking agent
Symbol
Symbols in an exploded diagram or illustration indicate the grade of lubricant and the lubrication
points.
Symbol Name Application
Water resistant grease
(Yamaha grease A)
Lubricant
How to use this manual / Lubricant, sealant, and thread locking agent

12. 0-7
GEN
INFO General information
Special service tool
For U.S.A. and Canada
Special service tools numbered “YB-*****” are distributed by K & L.
Special service tools with Yamaha part numbers (90890-*****) are distributed by the Parts Division.
YDIS (CD-ROM, Ver. 1.33)
60V-WS853-06
YDIS USB adapter and cable
60V-WS850-00
Digital multimeter
YU-34899-A

13. SPEC
Specification 1
Model feature ..................................................................... 1-1
General feature ......................................................................... 1-1
Model designation ..................................................................... 1-3
Serial number ............................................................................ 1-3
Electrical technical data ................................................... 1-4
Digital Electronic Control system ............................................... 1-4
Y-COP ....................................................................................... 1-5
Specified tightening torque .............................................. 1-6
Digital Electronic Control system ............................................... 1-6
Y-COP ....................................................................................... 1-6
General tightening torque ................................................ 1-7

14. 1-1
SPEC
Specification
Model feature
General feature
Command Link Plus overall feature
• New network protocol
a Digital Electronic Control
• Command Link Plus network connecting
coupler (6 pins)
• Push-button engine start and stop
• Switchable starter circuit to be compatible
with both new and existing outboard motors
b Command Link Plus Multifunction
Color Gauge
• Color liquid crystal display
• Trolling speed control
• Displays engine information for up to three
outboard motors on a single display.
c Y-COP
• Equipped with Y-COP as an anti-theft mea-
sure
d Command Link Plus Multisensor
• Transmission of information on boat speed
(over water), water depth, and water sur-
face temperature
e Command Link Plus Analog Gauge
Interface
• Digital-to-analog signal conversion
• Output to an analog tachometer and an
analog trim meter
f Command Link Plus Gateway
• Data conversion between the Command
Link Plus network and an NMEA 2000 stan-
dard.

15. 1-2
Model feature
0
1
2
3
4
5
6
7
8
9
10
A
SET
MENU
CANCEL
SET
MENU
CANCEL
Y-COP
LPS LPS LPSLPS LPS LPS
Command Link
Plus Multifunction
Color Gauge
Command Link
Plus Multifunction
Color Gauge
Multi-Hub Multi-Hub
Engine start/stop
button
Engine shut-off
switch
Station
selector
switch
Control
lever
Control
lever
Digital
Electronic
Control ECM
(PORT)
Digital
Electronic
Control ECM
(STBD)
Digital
Electronic
Control ECM
(center)
Digital
Electronic
Control ECM
(PORT)
Digital
Electronic
Control ECM
(STBD)
Digital
Electronic
Control ECM
(center)
Control
lever
Control
lever
Station
selector
switch
Engine
start/stop
button
Main switch
Engine
ECM
Engine
ECM
Engine
ECM
ALL engine
start/stop
button
Command Link
Plus Analog
Gauge Interface
Command Link
Plus Gateway
Command
Link Plus
Multisensor

16. 1-3
SPEC
Specification
Model designation
This manual covers the following types.
Serial number
The Digital Electronic Control serial number
is stamped on the label attached to the Digi-
tal Electronic Control to the position of a.
A Single engine type (top mount)
B Twin engine type
C Triple engine type
D Single engine type (flush mount)
a Approved model code
b Type
c Serial number
d Blank
Type Station type
Out-
board
motor
A
Single station model
single
B twin
C
Dual station model
(main station)
single
D twin
F triple
G
Dual station model (sub
station)
single
H twin
K triple
a a
A B
C D
a
a
Approved
model code
Type
Starting
serial number
6X6 A 0003236–
B 0503218–
C 1001104–
D 1501366–
F 2500557–
G 3000143–
H 3500335–
K 5000122–
6X7 A 0000749–
YAMAHA MOTOR CO., LTD.
MADE IN JAPAN
PAYS D'ORIGINE JAPAN
a
b d
c

17. 1-4
Electrical technical data
0
1
2
3
4
5
6
7
8
9
10
A
Electrical technical data
Digital Electronic Control system
(*1) The figures are for reference only.
Item Unit
Model
6X6 6X7
Engine start switch
Input voltage V 12.0
Main switch
Input voltage V 12.0
Digital Electronic Control
Input voltage V 12.0
Digital Electronic Control ECM
Input voltage V 12.0
LPS
Output voltage
F fully open position V 4.41–4.71
F shift-in position V 2.66–2.92
N position V 2.07–2.33
R shift-in position V 1.47–1.74
R fully open position V 0.29–0.59
Throttle request
F fully open position % 100
F shift-in position % 0
N position % 0
R shift-in position % 0
R fully open position % 100
Shift request
F position % 100
N position % 0
R position % –100
Free throttle switch
Input voltage (*1) V 10.8
PTT switch
Input voltage V 12.0
Engine selector switch
Input voltage V 12.0 —
Station selector switch
Input voltage (*1) V 10.9 —
Model feature / Electrical technical data

18. 1-5
SPEC
Specification
Y-COP
(*1) The figures are for reference only.
Item Unit
Model
6Y8
Y-COP
Input voltage V 12.0
Buzzer
Input voltage V 12.0
Button cell battery
Battery voltage (*1) V 3.0

19. 1-6
Specified tightening torque
0
1
2
3
4
5
6
7
8
9
10
A
Specified tightening torque
Specified tightening torques are provided for specific nuts, bolts, and screws. When tightening these
fasteners, follow the tightening torque specifications indicated throughout the manual to meet the
design aims of the Command Link Plus.
Digital Electronic Control system
Y-COP
Part to be tightened Screw size
Tightening torques
N·m kgf·m ft·lb
Digital Electronic Control mounting nut (6X6) – 4 0.4 3.0
Side cover screw M5 2 0.2 1.5
Digital Electronic Control mounting nut (6X7) – 7 0.7 5.2
ECM bracket screw ø6 7 0.7 5.2
Side cover screw M5 2 0.2 1.5
Control lever bolt M8 23 2.3 17.0
Grip screw M5 3 0.3 2.2
Lever cover screw M5 3 0.3 2.2
Stopper screw M5 3 0.3 2.2
Lead cover screw M4 1 0.1 0.7
Pilot indicator screw M4 3 0.3 2.2
ECM cover screw M5 1 0.1 0.7
ECM mounting screw M5 3 0.3 2.2
Neutral switch screw M3 0.4 0.04 0.3
Rear housing screw M5 3 0.3 2.2
Retainer screw M5 3 0.3 2.2
PTT switch screw M4 2 0.2 1.5
Holder screw M4 2 0.2 1.5
Bracket screw M5 3 0.3 2.2
Engine shut-off switch nut – 4 0.4 3.0
Lock arm screw M5 3 0.3 2.2
Free throttle switch screw (6X7) M4 2 0.2 1.5
Part to be tightened Screw size
Tightening torques
N·m kgf·m ft·lb
Receiver screw M4 4 0.4 3.0
Control unit screw M6 4 0.4 3.0
Buzzer screw ø6 2 0.2 1.5
Transmitter screw ø2 0.1 0.01 0.1
Electrical technical data / Specified tightening torque

20. 1-7
SPEC
Specification
General tightening torque
This chart shows the tightening torques for
standard fasteners with a standard ISO
thread pitch.
Width
across
flats (A)
Screw
size (B)
General torque
specifications
N·m kgf·m ft·lb
8 mm
10 mm
12 mm
M5
M6
M8
5
8
18
0.5
0.8
1.8
3.7
5.9
13.3

21. TECH
FEA
0
1
2
3
4
5
6
7
8
9
10
A
Technical feature and description 2
Command Link Plus system ............................................ 2-1
Digital Electronic Control ................................................. 2-2
Digital Electronic Control component ........................................ 2-4
New functions and combination with existing control system .... 2-5
Authorization system ................................................................. 2-7
Engine start and stop control ..................................................... 2-8
Shift-in prevention control in high-speed range ....................... 2-11
Synchronizing control .............................................................. 2-12
PTT control .............................................................................. 2-13
Tilt limiter ................................................................................. 2-14
Triple outboard motor operation .............................................. 2-15
Dual station control (for triple outboard motor installation) ...... 2-19
Command Link Plus Multifunction Color Gauge .......... 2-21
Names and functions of parts .................................................. 2-21
Startup screen ......................................................................... 2-23
Status bar ................................................................................ 2-24
Display item ............................................................................. 2-25
Menu items and functions ....................................................... 2-34
Logs ......................................................................................... 2-35
Settings ................................................................................... 2-35
Alarms ..................................................................................... 2-36
Other views ............................................................................. 2-37
Y-COP ............................................................................... 2-38
Command Link Plus Multisensor .................................. 2-39
Command Link Plus Analog Gauge Interface .............. 2-40
Command Link Plus Gateway ........................................ 2-42

22. 2-1
TECH
FEA Technical feature and description
Command Link Plus system
The Command Link Plus system consists of the new Digital Electronic Control, main switch, push-
button type engine start/stop button, Command Link Plus Multifunction Color Gauge, Command
Link Plus network, Y-COP, Command Link Plus Gateway, Command Link Plus Analog Gauge Inter-
face, and Command Link Plus Multisensor.
Y-COP
Command Link Plus Multifunction
Color Gauge
Command Link Plus Analog
Gauge Interface
Command Link Plus Gateway
Multi-hub
New Digital Electronic Control
Engine start/stop button
Main switch
ALL engine start/stop button
Outboard motor

23. 2-2
Digital Electronic Control
0
1
2
3
4
5
6
7
8
9
10
A
Digital Electronic Control
The new Digital Electronic Control starts and stops the engine using a CAN signal, which allows the
operator to start the engine with a single touch combining it with an outboard motor capable of one-
touch engine starts.
For multi-engine applications, attaching an ALL engine start/stop button allows the operator to start
all outboard motors.
Unlike existing Digital Electronic Controls, the neutral position of the control lever is detected only by
the LPS.
This system is compatible with the Command Link Plus network so that it can be equipped with the
Command Link Plus Multifunction Color Gauge.
The new Digital Electronic Control is also compatible with Command Link network. However, the
Command Link Plus network cannot be used with the Command Link network simultaneously.
Switching the engine starter circuit will be required when using outboard motors compatible with
existing Digital Electronic Controls in combination with a new Digital Electronic Control (except for
single station models). The default setting is to use the engine starter circuit of outboard motors
compatible with the new Digital Electronic Control.
Single station type
LPS LPS
Control lever
Digital
Electronic
Control ECM
(PORT)
Actual control
lever position
Engine ECM
(PORT)
Request:
• Engine start request
• Shift position
• Throttle opening
angle
Feedback:
• Actual throttle
position
• Shift position
• Engine speed
Command:
• Actuator and engine
operation control
Feedback:
• Actual actuator and
engine condition
• Throttle valve actuator motor
• Shift actuator
• Ignition
• Fuel injection
Control lever
Digital
Electronic
Control ECM
(STBD)
Actual control
lever position
Engine ECM
(STBD)
Request:
• Engine start request
• Shift position
• Throttle opening
angle
Feedback:
• Actual throttle
position
• Shift position
• Engine speed
Command:
• Actuator and engine
operation control
Feedback:
• Actual actuator and
engine condition
• Throttle valve actuator motor
• Shift actuator
• Ignition
• Fuel injection
Command Link Plus system / Digital Electronic Control

24. 2-3
TECH
FEA Technical feature and description
Dual station type
A Sub station
B Main station
LPS LPS LPS
LPS LPSLPS
A
B
Control lever
Digital
Electronic
Control ECM
(PORT)
Actual control
lever position
Control lever
Digital
Electronic
Control ECM
(STBD)
Digital
Electronic
Control ECM
(center)
Actual control
lever position
Actual control
lever position
Control lever
Digital
Electronic
Control ECM
(PORT)
Actual control
lever position
Engine ECM
(PORT)
Request:
• Engine start
request
• Shift position
• Throttle opening
angle
Feedback:
• Actual throttle
position
• Shift position
• Engine speed
Command:
• Actuator and
engine operation
control Feedback:
• Actual actuator
and engine
condition
• Throttle valve actuator motor
• Shift actuator
• Ignition
• Fuel injection
Control lever
Digital
Electronic
Control ECM
(STBD)
Actual control
lever position
Engine ECM
(STBD)
• Throttle valve actuator motor
• Shift actuator
• Ignition
• Fuel injection
Request:
• Engine start
request
• Shift position
• Throttle opening
angle
Feedback:
• Actual throttle
position
• Shift position
• Engine speed
Request:
• Engine start
request
• Shift position
• Throttle opening
angle
Feedback:
• Actual throttle
position
• Shift position
• Engine speed
Command:
• Actuator and
engine operation
control Feedback:
• Actual actuator
and engine
condition
Command:
• Actuator and
engine operation
control Feedback:
• Actual actuator
and engine
condition
Actual control
lever position
Digital
Electronic
Control ECM
(center)
Engine ECM
(center)
• Throttle valve actuator motor
• Shift actuator
• Ignition
• Fuel injection
Communication:
• Actual lever position
• Lever selection
• Station selection

25. 2-4
Digital Electronic Control
0
1
2
3
4
5
6
7
8
9
10
A
Digital Electronic Control component
A Single engine type (top mount)
B Single engine type (flush mount)
C Twin engine type
D Triple engine type
a Control lever
b PTT switch
c LPS
d Free throttle switch
e Digital Electronic Control ECM
f Active indicator
g Alert indicator
h Engine selector switch
i Engine start switch
j Main switch
k Engine start/stop button (single engine
type)
l Engine start/stop button (twin engine type)
m Engine start/stop button (triple engine
type)
n ALL engine start/stop button
o Station selector switch
a
c
d
e
f
g
a ab
c
d
f
g
C
e
h
b
d
f
g
D
e
B
b
c
d
e
f
g
a
bA
i
j
k l onm
c

26. 2-5
TECH
FEA Technical feature and description
New functions and combination with existing control system
The Command Link Plus system can be used in combination with existing Digital Electronic Control,
engine start switches, and outboard motors that are compatible with existing Digital Electronic Con-
trol. However, the new functions of the Command Link Plus system are not available in some config-
urations.
The following table shows possible configurations and the functions achievable.
Single station, single engine type
Single station, twin engine type
Dual station, single engine type
Switch
panel
Digital
Electronic
Control
Outboard
motor (*1)
New functions
One touch engine start/
cranking protection
Simultaneous
start
Y-COP
New New New OK — OK
New Current New NO — NO
Current New New OK — OK
Current New Current NO — NO
New New Current NO — NO
New Current Current NO — NO
Current Current New OK — NO
Switch
panel
Digital
Electronic
Control
Outboard
motor (*1)
New functions
One touch engine start/
cranking protection
Simultaneous
start
Y-COP
New New New OK OK OK
Current New New OK NO OK
Current New Current NO NO NO
Current Current New OK NO NO
Main station Sub station New functions
Switch
panel
Digital
Elec-
tronic
Control
Out-
board
motor
(*1)
Switch
panel
Digital
Elec-
tronic
Control
One touch
engine start/
cranking pro-
tection
Simulta-
neous
start
Y-COP
New New New New New OK — OK
Current New New New New OK — OK
Current New New Current New OK — OK
Current New New Current Current OK — OK
Current Current New Current Current OK — NO
Current New Current Current Current NO — NO
Current New Current Current New NO — NO

27. 2-6
Digital Electronic Control
0
1
2
3
4
5
6
7
8
9
10
A
Dual station, twin and triple engine types
(*1) The following models are denoted as “New” in the preceding tables.
Main station Sub station New functions
Switch
panel
Digital
Elec-
tronic
Control
Out-
board
motor
(*1)
Switch
panel
Digital
Elec-
tronic
Control
One touch
engine start/
cranking pro-
tection
Simulta-
neous
start
Y-COP
New New New New New OK OK OK
New New Current New New NO NO NO
New New Current Current New NO NO NO
New New Current Current Current NO NO NO
Current New New New New OK NO OK
New New New Current New OK OK OK
New New New Current Current OK OK OK
Current New New Current New OK NO OK
Current New New Current Current OK NO OK
Current New Current New New NO NO NO
Current Current New Current Current OK NO NO
Current New Current Current Current NO NO NO
Current New Current Current New NO NO NO
Model name
Approved
model code
Starting
serial No.
F225CA 6CL 1000001–
LF225CA 6CM 1000001–
F250CA 6CG 1000001–
LF250CA 6CH 1000001–
F300CA 6CE 1000001–
LF300CA 6CF 1000001–
F350CA 6AW 1004795–
LF350CA 6AX 1002906–

28. 2-7
TECH
FEA Technical feature and description
Authorization system
The Digital Electronic Control ECM has its authentication ID recognized by the engine ECM, and the
Digital Electronic Control ECM verifies the engine ECM using the authentication ID when the system
is activated. If the authentication ID does not match, the engine cannot be started.
Reset the authentication ID on the engine ECM using YDIS Ver. 1.33 to allow the engine ECM to
recognize the Digital Electronic Control ECM again. Once the engine ECM is reset, connect the Dig-
ital Electronic Control ECM to the engine ECM, and the engine ECM will recognize the authentica-
tion ID of the Digital Electronic Control ECM automatically, allowing the Digital Electronic Control
ECM to take control of the engine operation.
When the engine ECM and Digital Electronic Control ECM authentication ID do not match, neither
the active indicator nor the alert indicator comes on.
A Authorization
B Unauthorization
If the authentication ID does not match, some engine operations will not function properly.
Shift operation Not available
Throttle operation Not available
PTT operation Available
Cranking Not available
Engine start Not available
A
B
Digital Electronic Control ECM
(Engine ECM ID: XX00010)
Digital Electronic Control ECM
(Engine ECM ID: XX99999)
Engine ECM
(ID: XX00010)
Engine ECM
(ID: XX99999)

29. 2-8
Digital Electronic Control
0
1
2
3
4
5
6
7
8
9
10
A
Engine start and stop control
Under the new Digital Electronic Control system, the Digital Electronic Control ECM sends an
engine start and stop request that causes the engine to start or stop.
When the engine start switch or engine start/stop button is used to send an engine start and engine
stop signal, the Digital Electronic Control ECM sends an engine start and stop signal to the engine
ECM based on the engine start and stop status.
The engine ECM starts or stops the engine, depending on its current state.
When starting the engine using the ALL engine start/stop button, an engine start signal is sent to
the engine ECM in order of PORT and STBD for twin engine installations, and to PORT, center and
STBD in order for triple engine installations.
Pushing the ALL engine start/stop button when any of the outboard engines are stopped causes the
Digital Electronic Control ECM to send a stop request to all engine ECMs.
A New Digital Electronic Control
B Existing Digital Electronic Control
(*1) Engine start/stop button: Twin and triple engine types
Engine start switch: Single engine type
LPS
SPS
LPS SPS
A
B
Digital Electronic Control
ECM
Engine start/stop button
(Engine start switch) (*1)
Digital Electronic Control
ECM
Engine start switch
Neutral switch
Neutral relay
Engine
ECM
Engine
ECM
Starter relay
Pulser coil
Pulser coil
Starter relay

30. 2-9
TECH
FEA Technical feature and description
Engine start control
A Engine start/stop button signal
B Engine start request
A
B
Digital Electronic
Control ECM (PORT)
Engine start/stop button
(PORT)
Engine ECM (PORT)
Digital Electronic
Control ECM (PORT)
ALL engine start/stop
button
Engine ECM (PORT)
1st
Digital Electronic
Control ECM (center)
Engine start/stop button
(center)
Engine ECM (center)
Digital Electronic
Control ECM (center)
Engine ECM (center)
2nd
Digital Electronic
Control ECM (STBD)
Engine start/stop button
(STBD)
Engine ECM (STBD)
Digital Electronic
Control ECM (STBD)
Engine ECM (STBD)
3rd

31. 2-10
Digital Electronic Control
0
1
2
3
4
5
6
7
8
9
10
A
Engine stop control
A Engine start/stop button signal
B Engine stop request
A
B
Digital Electronic
Control ECM (PORT)
Engine start/stop button
(PORT)
Engine ECM (PORT)
Digital Electronic
Control ECM (PORT)
ALL engine start/stop
button
Engine ECM (PORT)
Digital Electronic
Control ECM (center)
Engine start/stop button
(center)
Engine ECM (center)
Digital Electronic
Control ECM (center)
Engine ECM (center)
Digital Electronic
Control ECM (STBD)
Engine start/stop button
(STBD)
Engine ECM (STBD)
Digital Electronic
Control ECM (STBD)
Engine ECM (STBD)

32. 2-11
TECH
FEA Technical feature and description
Shift-in prevention control in high-speed range
When the control lever is moved quickly, for example, from the fully open F position a directly to the
fully open R position while the engine speed is higher than the predetermined level (approximately
1500 r/min), the Digital Electronic Control ECM prevents gear shift until the engine speed is
decreased to below the level for which the gear shift is enabled.
Shifting to neutral starts once the control lever is moved beyond the gear shift enabling threshold b.
The throttle valve is kept at fully closed position even after the control lever reaches notch point R.
The actual gearshift is kept at N by the engine ECM until the engine speed reaches point c where
the gearshift is enabled.
Once the engine speed is decreased to 1500 r/min, gear shift operation to R starts at point c. After
gear shift position d, the throttle opening is controlled to the position corresponding to the Digital
Electronic Control lever position. A similar control process occurs when the control lever is moved
quickly directly from the fully open R position to the fully open F position.
A Control lever position
B Actual gearshift position
C Actual throttle opening
D Engine speed (r/min)
a F to N switching threshold range
b R shift-in position
c Throttle position enabling gearshift
d Engine speed enabling gearshift
a b dc
A
B
C
D
F fully
F notch
N notch
R notch
R fully
F
N
R
Max.
Min.
5000 r/min
1500 r/min

33. 2-12
Digital Electronic Control
0
1
2
3
4
5
6
7
8
9
10
A
Synchronizing control
This control is used to synchronize engine speeds for twin outboard motor installations. When the
relative positioning of the control levers for the twin type stays within the synchronizing control range
for the specified period, the engine speed of the STBD outboard motor is synchronized with that of
the PORT outboard motor.
The same applies to the triple outboard motor installation. Under synchronizing control, the center
outboard motor runs at the same speed as the PORT outboard motor. The synchronization control
is canceled once the angular difference between the two control levers is out of the predetermined
control range.
a Angular difference of the 2 control levers
b Synchronization control range
c PORT lever position
d STBD lever position
e F fully closed
f Lower limit of the synchronization control
g Upper limit of the synchronization control
h F fully open
Conditions under which synchronization control is performed (*1) (when all the following
conditions are met.)
• The gear shift is in the F position for both the PORT and the STBD, or the center outboard motors.
• The Digital Electronic Control lever position (STBD) is within the synchronization control range.
• The angular difference of the control levers is within the synchronization control range.
• The throttle valve opening of the STBD and the center outboard motors is within the synchroniza-
tion control range.
• The engine speed is within the synchronization control range for both the PORT and the STBD, or
the center outboard motors.
a
d
c
e
e
f
g
h
h
b

34. 2-13
TECH
FEA Technical feature and description
• The difference in engine speed between the PORT and the STBD, or the center outboard motors
is within the synchronization control range.
• Synchronization control is canceled when the fail-safe control is activated.
(*1) Applicable to multiple engine installations.
Conditions under which the synchronization control is not performed (*1) (when any of the
following conditions are met.)
• The shift position of either the PORT, or the STBD, or the center outboard motor is in the N posi-
tion.
• Shift position is different between the PORT and the STBD, or the center outboard motor.
• The Digital Electronic Control lever position (STBD) is out of the synchronization control range.
• The angular difference of the control levers is out of the synchronization control range.
• The throttle valve opening of the STBD, or the center outboard motor is out of the synchronization
control range.
• The engine speed of either the PORT, or the STBD, or the center outboard motor is out of the syn-
chronization control range.
• The difference in engine speed between the PORT and the STBD, or the center outboard motors
is larger than the specified value.
• A failure that causes engine speed restrictions occurs.
(*1) Applicable to multiple engine installations
PTT control
The Digital Electronic Control ECM causes the PTT relay to activate the PTT mechanism in accor-
dance with the input from the switches which are installed at the main station, sub station, and the
bottom cowling respectively.
The following table shows the PTT operations corresponding to the independent or simultaneous
PTT switch operations. Operation at the sub station cannot be activated while the engine start
switch or main switch is OFF since the effective operating station cannot be changed unless the
engine start switch or main switch is turned to ON.
PTT switch PTT operation
Main station Sub station
Bottom
cowling
Engine start
switch or main
switch OFF
Engine start
switch or main
switch ON and
main station
selected
Engine start
switch or main
switch ON and
sub station
selected
UP — — Up Up Not functioning
DN — — Down Down Not functioning
— UP — Not functioning Not functioning Up
— DN — Not functioning Not functioning Down
— — UP Up Up Up
— — DN Down Down Down
UP DN — Up Up Down
DN UP — Down Down Up
UP — DN Not functioning Not functioning Down
DN — UP Not functioning Not functioning Up
— UP DN Down Down Not functioning
— DN UP Up Up Not functioning

35. 2-14
Digital Electronic Control
0
1
2
3
4
5
6
7
8
9
10
A
Tilt limiter
A tilt angle limiter setting function has been added to the PTT control. This function prevents the top
cowling from striking the motor well on the boat when the outboard motor is fully tilted up. The tilt
limit position set by this function ranges from the maximum tilt angle to approximately minus 4°–17°.
The tilt limiter for PORT, STBD, and center outboard motors needs to be configured separately.
The tilt limit position is set using YDIS (ver. 1.33 or later). See “Setting the tilt limiter (for applicable
models)” (3-39), or “YDIS Instruction Manual.”
a Max. tilt angle
b Adjust range
a
b

36. 2-15
TECH
FEA Technical feature and description
Triple outboard motor operation
Selecting the outboard motor
The engine selector switch a allows boat operators to change the mode of operable outboard motor
between ALL mode in which the PORT, center, and STBD outboard motors are operable, P and S
mode in which the PORT and STBD outboard motors are operable, and C mode in which the center
outboard motor is operable. Start all three outboard motor engines and then push the engine selec-
tor switch a once. The P and S mode is entered. Pushing the engine selector switch a twice will
change to the C mode. Then, operating mode will return to the initial condition (ALL mode) by push-
ing the switch once more.
The outboard motors currently selected can be determined by checking the active indicator b light-
ing positions on the Digital Electronic Control.
A All mode
B P and S mode
C C mode
P: PORT outboard motor
C: Center outboard motor
S: STBD outboard motor
A
BC
P C S P C S
P C S
b
b ba

37. 2-16
Digital Electronic Control
0
1
2
3
4
5
6
7
8
9
10
A
When operating the PORT, center, and STBD outboard motors (ALL mode)
• The center outboard motor is controlled to obtain the operation corresponding to the virtual inter-
mediate position of the PORT and the STBD control levers. Note that the center outboard motor is
locked in the N position (with fully closed throttle) if PORT and STBD outboard motors are in the
different gearshift positions.
• The PORT outboard motor is controlled to obtain the operation corresponding to the PORT control
lever position.
• The STBD outboard motor is controlled to obtain the operation corresponding to the STBD control
lever position.
A Lever operation
B Boat direction and turning force
C Propulsion
The size of the arrow is proportional to the turning force.
P: PORT outboard motor
C: Center outboard motor
S: STBD outboard motor
P C S P C S P C S P C S P C S P C S
P C S P C S P C S P C SP C SP C S
A
B
C

38. 2-17
TECH
FEA Technical feature and description
When operating the PORT and STBD outboard motors (P and S mode)
• The center outboard motor is always kept in the N position (with fully closed throttle).
• The PORT outboard motor is controlled to obtain the operation corresponding to the PORT control
lever position.
• The STBD outboard motor is controlled to obtain the operation corresponding to the STBD control
lever position.
A Lever operation
B Boat direction and turning force
C Propulsion
The size of the arrow displayed is proportional to the turning force.
P: PORT outboard motor
C: Center outboard motor
S: STBD outboard motor
P C S C S C S C S C S PP PPP C S
P C S P C S P C S P C S SP C P C S
A
B
C

39. 2-18
Digital Electronic Control
0
1
2
3
4
5
6
7
8
9
10
A
When operating the center outboard motor (C mode)
• The center outboard motor is controlled to obtain the operation corresponding to the PORT control
lever position.
• The PORT outboard motor is always kept in the N position (with fully closed throttle).
• The STBD outboard motor is always kept in the N position (with fully closed throttle).
A Lever operation
B Boat direction and turning force
C Propulsion
The size of the arrow is proportional to the turning force.
P: PORT outboard motor
C: Center outboard motor
S: STBD outboard motor
C SPP C S P C S P C SP C S P C S
A
B
C

40. 2-19
TECH
FEA Technical feature and description
Dual station control (for triple outboard motor installation)
The station selector switch switches the effective operating station between the main station and the
sub station. The effective operating station can be changed when the main switch is ON, and all
control levers at the main station and sub station are in the N position. Note that the effective operat-
ing station cannot be changed for the outboard motors on which the main switch is OFF. The active
indicator on the Digital Electronic Control box comes on, once the relevant operating station is acti-
vated.
A Turning the main switch to ON selects the main station as the effective operating station. The
active indicator on the Digital Electronic Control at the main station comes on.
B Pushing the station selector switch at the sub station once while all control levers at both the
main station and the sub station are in the N position transfers the control functions of all the out-
board motors to sub station.
C Gearshift and throttle opening can be controlled by operating the control levers at the sub station.
A B C

41. 2-20
Digital Electronic Control
0
1
2
3
4
5
6
7
8
9
10
A
All control levers at both the main station and the sub station must be in the N position to allow
switching of the effective operating station.
D Turning the main switch to ON selects the main station as the effective operating station. The
active indicator on the Digital Electronic Control at the main station comes on.
E Because the main station is selected as the effective operating station, the gearshift and the
throttle position cannot be controlled using the control levers at the sub station.
F Because the control lever at the sub station is not in the N position, the effective operating station
cannot be changed by activating the station selector switch.
D E F

42. 2-21
TECH
FEA Technical feature and description
Command Link Plus Multifunction Color Gauge
The Command Link Plus Multifunction Color Gauge can display engine information for up to three
outboard motors on a single display.
In addition to information on outboard motors, it can also display boat information.
The USB interface on the rear of the gauge can be used to input and output gauge settings, and to
input image for display on the startup screen.
When starting the Command Link Plus Multifunction Color Gauge for the first time, or when it is
reset, configuring the number of outboard motors mounted on the boat will be required. See “Con-
figuring the number of outboard motors” (3-45).
Names and functions of parts
a Main screen
b Directional keypad
c “SET” button
d “CANCEL” button
e “MENU” button
f Command Link Plus network interface
g NMEA 0183 interface
h Fuel sensor interface
i USB interface
j Cap
a
i h g f
b
c
j
d
e

43. 2-22
Command Link Plus Multifunction Color Gauge
0
1
2
3
4
5
6
7
8
9
10
A
Main screen
Displays engine information, boat/environment information, setting menus, and so on.
The engine and boat information to display can be selected.
Operating buttons
Command Link Plus network interface
Used for connecting to the Command Link Plus using the dedicated cables.
NMEA 0183 interface
Used for connecting to an NMEA 0183 standard GPS using the dedicated cables.
Fuel sensor interface
Used for connecting to fuel tank sensor using the dedicated cables.
Up to four fuel tank sensors can be connected.
Button Function
Directional keypad “ ” (Up/Down) buttons
• Switches main screen
• Moves cursor (selects) on the menu screen
• Adjusts engine speed during trolling
“ ” (Left/Right) buttons
• Switches main screen
• Moves cursor (selects) on the menu screen
“SET” button • Set
• Moves the menu screen cursor to the right
• When on the main screen, moves to the “BRIGHTNESS” screen
“CANCEL” button • Cancel
• Moves from any setting screen to the menu screen
• Moves from the menu screen to the main screen
• Moves the menu screen cursor to the left
• Cancels trolling mode
• When on the main screen, moves to the “TRIP” screen
“MENU” button Moves from any screen to the top menu screen

44. 2-23
TECH
FEA Technical feature and description
USB Interface
Password-protected USB memory cannot be used.
Used for connecting to USB memory (ver. 1.1, ver. 2.0) to install startup screens.
Inputs and outputs the Command Link Plus Multifunction Color Gauge configuration information.
Images and configuration information need to be saved on the top layer of the USB memory.
Only single-byte Roman letters can be used for the file names of the image files to install.
Anything in the file names of the configuration files cannot be changed except for the numbers. If
characters other than numbers are changed, the Command Link Plus Multifunction Color Gauge will
not be able to read the files.
(Configuration_01.csv, Configuration_04.csv)
The Command Link Plus Multifunction Color Gauge may not be turned off during installation of
images or configuration files.
Reinstallation of the images will be required if they do not display properly after installation.
Startup screen
Displays designated images (boat-builder logos and so on) on the startup screen.
Images for display are installed directly via the USB interface.
Image files that can be installed
Image size 800 300 pixel
Image type
JPEG 24-bit color (No gray/No progressive)
PNG 24-bit/8-bit color (No alfa layer)

45. 2-24
Command Link Plus Multifunction Color Gauge
0
1
2
3
4
5
6
7
8
9
10
A
Status bar
Displays the screen name and time in the upper area of the screen.
Displays “ENGINE” when displaying engine information, “BOAT STATS” when displaying boat infor-
mation, “COMBO” when displaying engine and boat information, and “TROLL” when trolling.
Displays the time when time information is being received from a connected device.
a Status bar
A COMBO screen (single engine type)
B COMBO screen (twin engine type)
C COMBO screen (triple engine type)
D ENGINE screen (twin engine type)
E ENGINE screen (triple engine type)
F BOAT STATS screen
G TROLL screen (single engine type)
H TROLL screen (twin engine type)
J TROLL screen (triple engine type)
A B
C D
E F
G
J
H
a
a
a
a
a
a
a
a
a

46. 2-25
TECH
FEA Technical feature and description
Display item
The Command Link Plus Multifunction Color Gauge screen displays are as follows:
a Shift position
b Tachometer
c Trim angle
A Single engine type (digital display)
B Single engine type (analog display)
C Twin engine type (digital display)
D Twin engine type (analog display)
E Triple engine type (digital display)
F Triple engine type (analog display)
A B
C D
E F
a
a
b c b c
a b c
a
b c
a b c
a
b c

47. 2-26
Command Link Plus Multifunction Color Gauge
0
1
2
3
4
5
6
7
8
9
10
A
Cooling water
temperature
(digital)
Cooling water
temperature
(analog)
Battery voltage
(digital 1)
Battery voltage
(analog)
House (accessory)
battery voltage
(digital 1)
House (accessory)
battery voltage
(analog)
Battery voltage
(digital 2)
House (accessory)
battery voltage
(digital 2)
Cooling water
pressure display
(digital)
Cooling water
pressure display
(analog)
Cooling water
pressure display
with scale (digital)
Cooling water
pressure display
with scale (analog)
Engine oil pressure
display (digital)
Engine oil pressure
display (analog)
Engine warm-up
indicator
Engine
synchronization
indicator
Y-COP lock
indicator

48. 2-27
TECH
FEA Technical feature and description
Trip hour meter (PORT) Trip hour meter (center)
Trip hour meter (STBD)
Speedometer (digital) Speedometer (analog)
Trip distance Remaining fuel
Fuel flow (PORT) Fuel flow (center)
Fuel flow (STBD) Total fuel flow
Total fuel consumption Fuel economy
Water surface temperature Water depth

49. 2-28
Command Link Plus Multifunction Color Gauge
0
1
2
3
4
5
6
7
8
9
10
A
Tachometer display
Either analog or digital display can be selected.
When the shift is in the N position, the lettering in the tachometer display (the color of the needles
for analog displays) turns a paler color.
• Digital displays
Displays the engine speed in 100 r/min (“1” 100 r/min) increments.
Displays “0” for engine speeds of less than 300 r/min.
Display “99” flashes for engine speeds of more than 10000 r/min.
Displays “– –” when no data on engine speed is being received.
• Analog displays
Displays the engine speed per minute in 1 r/min increments.
Indicates “0” for engine speeds of less than 300 r/min.
The indicator needle flashes in the 7000 position when engine speed is more than 7000 r/min.
No needle is displayed when there is no data on engine speed being received.
Trim meter display
Displays the trim angle of the outboard motor in 10 stages. The display flashes when the trim angle
is outside the trim range.
Shift position display
Displays the shift positions (F-N-R). The letter of the currently selected shift position is enlarged. No
shift position is displayed when there is no data on shift position being received.
Cooling water temperature display
Either analog or digital display can be selected.
• Digital displays
Displays engine cooling water temperature in 5 stages. In normal operating conditions, the display is
in the center of the meter. No cursor is displayed when there is no data on cooling water tempera-
ture being received.
• Analog displays
The engine cooling water temperature is displayed in increments of 0.1 ºC.
No needle is displayed when there is no data on cooling water temperature being received.
Battery voltage display
Either analog or digital (bar graphs and numeric displays) display can be selected.
• Digital displays
Battery voltage for starting the engine is displayed in either 5 stages or 0.1 V increments.
For numeric displays, the display flashes when battery voltage is less than 12 V or greater than 16 V.
No cursor, or alternatively, “– –. – V” is displayed when no data on battery voltage is being received.
• Analog displays
Battery voltage for starting the engine is displayed in 0.01 V increments.
The needles indicate 11 when battery voltage for starting the engine is less than 11 V.
The needles indicate 17 when battery voltage for starting the engine is greater than 17 V.
No needle is displayed when there is no data on battery voltage being received.

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