Royal Enfield NACS II-ROYAL User manual

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01. Hardware Coverage…………….……………………………………
02. NACS II-ROYAL Diagnostic Interface …………………………….
03. Product Specification……………………..…………..…………....
04. Hardware Connection Diagram …………………..…..…..…..….
05. WARNING……………………………..…..…..…..…..…..…..…..
06. Trouble shooting…………..…..…..…..…..…..…..…..…..…..…
07. PC Requirements ……………..……..……..……..……..……..…
08. PC Settings……………….…….…….…….…….…….…….…….
09. Software Installation ………….….….….….….….….….….….…
10. Software Removal…………………………………………………
11. Diagnostic software for Handheld tool……………………………
12. Registration Guide…………………………………………………
13. Firmware upgrade tool…………….………………………………
14. Record analyzing software…………………………………………
15. Customer support…………….……………….....…………………
NACS II-ROYAL Table of contents
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2. NACS II-ROYAL Diagnostic Tool Kit
1NACS II-ROYAL interface 3Diagnostic cable (6PIN)
5Cigarette lighter cable
2Main cable (Transfer cable)
NACS II-ROYAL Interface
USB Hi-speed cable connector
SD memory card
Reset button
Diagnostic connector
4USB Hi-speed cable
11 User Manual (Included on CD)
1. Hardware Coverage
6OBD II 16PIN cable
8SD memory Card
9Carrying box
7SD card reader 10 Installation CD
(Plug adapter)

3. Product Specification
4. Hardware Connection Diagram
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Dimension L:173.78mm x W:134.66mm x H:60.91mm
Weight
Operating Voltage
Operating Current
OperatingTemperature
Dust and water resistance
660g
DC 8~18 V
300mA
0℃~+70℃
IP55 Standard
Before diagnosis, please connect NACS II-ROYAL diagnostic tool kit as below.
1. Hand-Held:
NACS II-ROYAL interface→Main cable →Diagnostic cable →Motorcycle (IG ON)
2. PC
PC → USB Hi-Speed Cable → NACSII-ROYAL interface → Main Cable
→ Diagnostic Cable → Motorcycle (IG ON)
5. WARNING
When NACS II is already connected to the motorcycle, do NOT plug in
AC Adaptor.
Do not remove SD card when you are using NACSII.
The failure caused by the use of unapproved cables and accessories
that are out of warranty.
The warranty will become void if NACSII is disassembled or altered.
We recommend you back-up the SD card data in case of data loss due to
other reasons.

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Notes
Operating system Windows XP, Vista,Windows 7 / 8 /10
CPU CPU 1.6 GHz or higher
RAM 2GB or larger
Display Resolution 1024*768
Hard Disk Space Free space more than 1GB (on C driver)
When you use Windows Vista or Windows 7/8,
you need to close “User Account Control
(UAC)” first. Please refer to item No.7.PC Settings.
▲There is a warning message
showing on the screen. What’s
wrong?
A: It means communication
breakdown. Please check
whether the cables are
connected well.
6. Trouble shooting
▲Why can’t I install the software successfully?
A: If you are using Windows 7, 8 10, please check whether you have turned UAC
off before installation. (Please refer to item No. 8, PC settings.)
▲I have already installed the software. Why the software cannot be opened?
A: Check whether you have run the software as administrator. Right click ICM
logo on the desktop. Choose “Run as administrator”.
▲Why there is a pop-up-window
displaying “cannot find COM
port”.?
A: Check whether the driver of USB
Hi-speed cable is installed. If
USB port is not recognized ,
please install USB driver.
7. PC Requirements
8. PC Settings
When you use Windows 7 / 8 / 10, please finish the setting below to run our
software successfully.
First, you need to disable “User Account Control (UAC)” before installing our
software. The way to disable UAC is as follows.
8-1. Click “Start button” and
select “Control Panel”

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8-2. Click “User Accounts“
8-3. Click “Change User
Account Control
Settings”.
8-4. Move the slider to the
Never notify position.
Click“OK”to make the
change effective.
9. Software Installation
9-2. Installation will
start. Click “Next” to
continue.
9-1. Start the computer.
Insert installation
CD to CD-ROM
drive. Select “01
NACSII Firmware
Upgrade Tool” to
run the installation.
9-3. Click “Next” to continue.
02．Diagnostic Software
01．NACSII Firmware Upgrade Tool
02．NACSII Record Read Tool
03．USB Hi-Speed Driver(Please omit this step if it was installed.)
04．User Manual
INSTALL
INSTALL
INSTALL
INSTALL
05．Customer Support OPEN

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9-6. Click “Finish” to exit
installation.
9-7. Go back to installation
menu again. Select “03
USB Hi-Speed Driver” to
run the installation. Click
“Extract” to continue.
9-4. Click “Finish” to exit
installation.
9-8. Click “Next” to continue.
9-9. Click “Finish” to complete
the installation.
9-5. Back to installation
menu. Select “02
NACSII Record Read
Tool” to run the installation.
When installation starts,
click “Next” to continue.

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10-1. Click“Start Menu”→“All
Programs”→“Control
Panel”.
10-2 Click “Uninstall a program”.
10-3. Find “NACSII_RECORD_
ROYAL” and click
“Change/Remove”.
9-9. Go back to installation
menu again. Select “04
User manual” to open
the file. You can save
the file to your PC for
reading purpose.
10. Software Removal
10-5. Click “Finish” to exit
uninstall.
10-4.When “Uninstalling ”
window pops up, please
click “Next”.

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11. Diagnostic software for handheld tool
11-A. Diagnosis
11-A1. Please connect your NACSII-ROYAL diagnostic tool kit with your
motorcycle. NACS II-ROYAL interface→Main cable →Diagnostic cable
→Motorcycle Orange light indicates whether the system is
communicating.
11-A2. When the IG of the motorcycle is ON, the system starts to run,
entering welcome page “ROYAL ENFIELD”. Press
Diagnosis.
11-A3. Select “Royal D1
Press to
continue.
11-A4. NACS II will automatically
detect which system the
vehicle is. Select “KEIHIN
Engine System” or “BOSCH
ABS System”. Press
to continue.
11-A5. Take “KEIHIN Engine System” as an example. After pressing ,
the system will display “Vehicle Model Data”. Press to view
the 2nd page of vehicle information. Press to return to last page.

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11-A6. Press to exit “Vehicle
Info” page. The page will
return to the main menu.
11-A7. Using and to move
the cursor. Move the cursor to
select “Diagnostic Trouble
Code”. Press to see the
content.
11-A8. Diagnostic trouble code page
includes “F1 Current” ,“F2
History” and “F4 Erase”.
“Current” is for the DTC occurred
at the time and “History” is for
DTC occurred in the past.
“Erase” is for erasing current
DTC and History DTC. Press
to view “Current” DTC.
11-A9. Press to view “History” DTC. Press to view next page and
press to view last page. After viewing all the “History DTC”,
press to exit. The screen will return to the previous page.
11-A10. Freeze Data. “Freeze Data” is the data recorded when First DTC
occurred, and one time only record One DTC freeze data. It's for
saving the engine dynamic data for further analysis.
When displays on the screen, press to view freeze data. Press and
to view next page and last page. After viewing all content, press to exit.
The screen will return to the previous page.

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11-A12. When the screen returns to
the main menu, move the
cursor to “Live Data” and
press to view the content.
Press to return to the
previous page.
11-A11. Erase DTC. It’s the function to
erase Diagnostic Trouble Code
in both “Current” and “History”.
Press to erase. To confirm
erasing DTC, press “Yes”.
When showing on the screen, it means the DTC has been
erased. Press to go back to the main menu.
11-A13. Press and to view all the content.
11-A14. Record data. “F2 REC” is for recording Live data. When viewing
“Live Data”, click to record current values.Press to stop
recording.
11-A15. Press to save the file.
(To analyze the recorded data,
please refer to item No. 12.
Record analyzing)

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11-A16. Back to the main menu, move
the cursor to “Special
Function” and press
“Special function” is
customized functions
provided to specific vehicles.
11-A17. Select “CO Adjustment”,
press and to
adjust the CO value.
is for increasing fuel
injection value. is for
decreasing fuel injection
value.
After finish adjustment, press to save. Press to exit. If
you want to go back to the main page, press until the page
return to the top of the page.
11-B. Setup
11-B1. “F2 Setup” page contains setting Language, viewing System
Information and setting Date/Time.
11-B2. Press to view System Information.
11-B3. Press to to set Date and Time. Before start setting,
read “Warning” first.
11-B4. Using and to move the cursor. Press to select the
item. Change figure using or and press to confirm
the item. At this time, the pink block will turn to white. Press
to apply the setting.

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11-C. ABS Functions
11-C1. Select “BOSCH ABS System”.
Press to continue.
BOSCH ABS System
11-C3. Read the warning first before start operating air bleeding.
11-C2. Select “Special Function”. Then, select “Repair Air Bleed”.
11-C4. Follow each step on the screen to finish the procedure.
11-C5. SILA Lamp Blinking Test
Follow the screen guide to finish the test.
11-C6. Front Channel Activation

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11-C7. Follow the instructions on screen to finish the activation.
11-C8. Pump Motor
Follow the screen guide to finish the test.
12-2. When registration is completed,
the tool activation date and
validation period will be
appeared on the screen. Click
“EXIT”.
12. Registration Guide
12-1. When the first time you use software, the software will enter register
process automatically.
*Be sure the computer is connected to diagnostic tool properly and it
has internet access. Software will display “Product key” on the
screen as picture shown below, click on “NEXT” system will retrieve
the activation code.
12-3. If diagnostic tool is changed to
connect to a different computer,
the software will be required to
repeat the registration process.

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13. Firmware upgrade tool
13-1. Please use USB High Speed
cable to connect NACS II
interface to PC computer as
picture shown on the right side.
13-2. Double click “ROYAL firmware
upgrade” on the desktop to
open firmware upgrade program.
13-3. Click “Enter” to start firmware
upgrade.
13-4. Click on icon of NACSII interface
to proceed next for firmware
upgrade.
13-5. Please check if NACS II interface
is connected to USB connector
on PC properly, and click NEXT.
13-6. Follow the steps 1~3 shown on
the window and click “Next”.
upgrade.

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13-7. Click on “Start HW upgrade”
13-8. Please follow the steps on screen to complete the upgrade procedure.
Do NOT turn off the power or exit the software.
13-9. Use a pin to press and hold
the button on interface and
click “Upgrade”.
13-10. You may now release the pin
from pressing down.
Upgrading….Please wait…..
13-11. After upgrading is complete,
you may see the screen of
displaying current firmware
version, and upgraded date.
The hardware has already
upgraded to a newer version.
Click “Next” .
13-12. Follow the steps 1~2 shown on
the window and click “Exit” to
complete firmware upgrade.

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14. Record analyzing software
This software is for reading NACS II handheld recorded data. Please take out
SD card from NACS II handheld tool and insert SD card to PC.
14-1. Open the software of
“NACSII_Record_Royal”.
Select “ Analyze Record Data”.
14-2. Select Record Date and File
name, then click .
14-5.To slow down the playing speed
of wave chat, please drag the
slider down.
14-4. Wave chat starts running until you press “Stop” button. Drag Yellow line
forward and back to view recorded live data values.
14-3. Select the items which used
often. Selected items will be
listed in the block of “Live Data
Item”. Click to view wave
chat of selected items.

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14-6.To view different sections of
wave chart, please click to
select page number. Click the
2 to go back to last page.
nd
14-7. Select items to set breakdown
point for analysis. After
selecting items, click .
14-8. For example, setting Engine
speed greater than 3150, enter
3150 in the right block.
Click to confirm the
setting value.
14-9. When window pops up “Setting
OK”, the setting is completed.
14-11. Click to quickly find
matched point of setting value.
14-10.The setting value will display
in the block under “Break”.
Click to view wave chat.

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14-12. Sometimes, setting only one value still can not find the main problem
which causes malfunction. In this case, setting the 2nd value or more
values can help user to find satisfied conditions. To set the second
value please select Live data item. Take throttle position as an
example. Enter throttle
position greater than 9.8 in
the right block and click
to finish setting.
14-13.After setting 2 values of the 2
items, the 2 items will be listed
in the block of “All value match”.
Click to go back to Live data
selection page.
14-14. Back to Live data selection
page, click to view wave
chat of the 2 setting values.
14-15. Click to quickly find the 2
matched conditions.
14-16. Back to Live data selection
page, setting the 3rd value as
the same way as step 13-8.
Click to finish setting.
14-17.The 3 setting items will be listed in “All value match” block. To analyze
conditions and differences of values, it’s necessary to select match
items. Select the items that you want to check and then click .
The selected items will be listed in “Any of value match” block. Continue
to set match conditions: AND, OR, &&.
AND: All conditions of setting items must be satisfied.
OR: One of or any of selected items must be satisfied.
&&: Setting items listed in “All value match” and “ Any of value match”
must be satisfied. If there is no matched condition, the window will pop
up showing condition can’t match.
After setting condition,
click to go back to
Live data selection page.

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Version:20190424
14-18. Click to wave chat.
14-19. Click to quick find
matched conditions.
15. Customer support
15-2.You can also open the link by
clicking “OPEN” of Customer
Support on the CD.
15-1. If you have any questions, you
can report your problem to following
Customer support page. Or scan
following QR code going to the
page. Service representative will
reply you within 24 hours (working day).
http://www.icm.com.tw/royalenfield/service/
02．Diagnostic Software
01．NACSII Firmware Upgrade Tool
02．NACSII Record Read Tool
03．USB Hi-Speed Driver(Please omit this step if it was installed.)
04．User Manual
INSTALL
INSTALL
INSTALL
INSTALL
05．Customer Support OPEN