V1.00.000

2012-12-11

LAUNCH JAC X-431 3G User’s Manual

retrieval system or transmitted, in any form or by any means of electronic,

mechanical, photocopying and recording or otherwise, without the prior written

permission of LAUNCH.

This manual is designed only for the use of this unit. LAUNCH is not

responsible for any use of this manual on the other units.

The manual and all the samples herein can be changed without prior notice.

Neither LAUNCH nor its affiliates shall be liable to the purchaser of this unit or

third parties for damages, losses, costs or expenses incurred by purchaser or

third parties as a result of: accident, misuse, or abuse of this unit, or

unauthorized modifications, repairs, or alterations to this unit, or failure to

strictly comply with LAUNCH operating and maintenance instructions.

LAUNCH shall not be liable for any damages or problems arising from the use

of any options or any consumable products other than those designated as

Original LAUNCH Products or LAUNCH Approved Products by LAUNCH.

Notice: other product names used herein are for identification purposes only

and may be trademarks of their respective owners. LAUNCH disclaims any

and all rights in those marks.

This device is only for professional technicians and maintenance personnel.

Registered Trademark

LAUNCH is a registered trademark of LAUNCH TECH. CO., LTD. (LAUNCH)

in China and other countries. In other countries where any of the LAUNCH

trademarks, service marks, domain names, logos and company names is not

registered, LAUNCH claims other rights associated with unregistered

trademarks, service marks, domain names, logos and company names. Other

products or company names referred to in this manual may be trademarks of

their respective owners. You may not use any trademarks, service marks,

domain names, logos or company name of LAUNCH or any third party without

permission from the owner of the applicable trademarks, service marks,

LAUNCH JAC X-431 3G User’s Manual

domain names, logos or company name. You may visit LAUNCH at

http://www.cnlaunch.com for the information of Launch's NCP and the other

specialized diagnostic tools, or contact Launch by visiting

http://www.X431.com or writing to Customer Center, LAUNCH TECH. CO.,

LTD., Launch Industrial Park, North of Wuhe Avenue, Banxuegang, Bantian,

Longgang, Shenzhen, Guangdong. P.R. China, to request written permission

to use materials on this manual for purposes or for all other questions relating

to this manual.

LAUNCH JAC X-431 3G User’s Manual

iii

Precautions on Operating Vehicle’s ECU

z Do not disconnect the vehicle inner consumer when the ignition switch is

on. High voltage transients may encounter at the moment of

disconnecting, which may damage the sensors and the ECU.

z Protect the computer from magnetic object (such as wireless speaker).

z Do cut off the power supply of ECU system before welding on the

vehicle.

z Pay more attention to the ECU and the sensors when the operation is

next to them.

z Ground yourself when you disassemble PROM, otherwise ECU and

sensors will be damaged by static electricity.

z Do not use the pointer ohmmeter instead of DMM to test the ECU and

the sensor without special requirement.

z Do not test electric devices in relation with ECU with a test lamp unless

otherwise expressly provided.

z Do wear a metal ground strip that one end around your wrist and the

other to the vehicle body when you get in and out the vehicle.

z Do connect ECU harness connector firmly, otherwise electro elements,

such as IC inside ECU, will be damaged.

Precaution on Operation

z The appliance is a sophisticated electronic device, never have it clashed

when in use.

z Make sure the appliance is properly connected to the DLC to avoid

communication interruptions. During operation, keep the screen upward

and leveled.

z Don’t disconnect the wire network or Wi-Fi network while software

updating or sending E-mail, otherwise, it will be interrupted.

z After the operation, the stylus shall be inserted into the hole on the back

of the main unit, and put away the cable and connector, etc accessories

to the box to avoid the lost.

z Handle with care. Avoid collision. Unplug the power after operation.

LAUNCH JAC X-431 3G User’s Manual

Safety Precautions

z Automotive batteries contain sulfuric acid

that is harmful to skin. In operation, direct

contact with the automotive batteries should

be avoided. Pay attention not to splash the

sulfuric acid into eyes. Keep the ignition

sources away from the battery at all times.

z Engines produce various poisonous

compounds (hydrocarbon, carbon monoxide,

nitrogen oxides, etc,) which should be

avoided. The vehicles shall be tested in a

well-ventilated area.

z Avoid contacting high temperature assembly

such as water tank and vent-pipe as the

temperature of the running engine is very

high.

z Before starting engine, put the speed lever

in the neutral position or in the P position to

avoid injury.

z Wear an ANSI-approved eye shield when

testing or repairing vehicles.

z If you use the battery as a power source,

connect the RED (+) battery clip to the

positive of the vehicle battery and the

BLACK (-) battery clip to the negative.

LAUNCH JAC X-431 3G User’s Manual

Contents

1. FOREWORD............................................................................................. 1

1.1 PRODUCT SUMMARY ............................................................................... 1

1.2 PRODUCT FEATURES............................................................................... 1

1.3 PRODUCT FUNCTIONS ............................................................................. 1

1.4 TECHNICAL SPECIFICATIONS ..................................................................... 1

2 ABOUT JAC X-431 3G ............................................................................... 3

2.1 JAC X-431 3G MAIN SET ........................................................................ 3

2.1.1 Composition ................................................................................. 3

2.1.2 Structure ...................................................................................... 4

2.2 JAC X-431 3G COMMON ACCESSORIES ..................................................... 8

2.3 First operation ................................................................................. 9

2.3.1 Turn on ........................................................................................ 9

2.3.2 Icons and function items ................................................................ 9

2.3.3 System Settings.......................................................................... 10

3. HOW TO DIAGNOSE............................................................................... 27

3.1 PREPARATION AND CONNECTIONS ........................................................... 27

3.1.1 Preparation................................................................................. 27

3.1.2 JAC X-431 3G connections .......................................................... 27

3.2 START DIAGNOSING .............................................................................. 27

3.2.1 How to start diagnostic program ................................................... 27

3.3 HOW TO DIAGNOSE ............................................................................... 29

3.3.1 Read trouble code....................................................................... 32

3.3.2 Clear trouble code....................................................................... 32

3.3.3 Read data stream........................................................................ 33

3.3.4 Special Function ......................................................................... 36

3.3.5 Driving record management ......................................................... 38

3.4 FLOW CHART FOR ENTERING DIAGNOSTIC PROGRAM ................................... 41

4. BROWSER ............................................................................................. 42

5. INFORMATION........................................................................................ 44

5.1 NEWS ................................................................................................ 44

5.2 SOFTWARE DOWNLOAD INFORMATION....................................................... 47

LAUNCH JAC X-431 3G User’s Manual

6. MAILBOX ............................................................................................... 49

6.1 READ MAIL .......................................................................................... 49

6.2 NEW MAIL ........................................................................................... 50

7. UPDATE ................................................................................................. 53

7.1 REGISTER........................................................................................... 53

7.2 UPDATE.............................................................................................. 54

8. OPTIONAL FUNCTIONS OF JAC X-431 3G.............................................. 58

8.1 OSCILLOSCOPE.................................................................................... 58

8.2 IGNITION............................................................................................. 59

8.3 SENSOR ............................................................................................. 59

8.4 MULTIMETER ....................................................................................... 60

8.5 BATTERYTEST ..................................................................................... 60

9. FQA ....................................................................................................... 61

LAUNCH JAC X-431 3G User’s Manual

1. Foreword

1.1 Product summary

JAC X-431 3G is a sophisticated and integrated diagnostic product with

powerful functions developed by LAUNCH in cooperation with JAC. It features

wired network, meanwhile it also supports Wi-Fi communication, which

enables you to access Internet, update online, search information anytime and

anywhere, and makes JAC X-431 3G diagnose vehicle trouble more

conveniently. It has functions of diagnose, oscilloscope, ignition, sensor,

Multimeter, browser and battery test and service functions such as wireless

LAN. VGA extending display function is available. As a result, it has strong

practicability and high performance-price ratio, which is a helpful assistant for

vehicle diagnosis and maintenance.

1.2 Product features

z High performance industrial control computer runs rapidly and stably.

z Inheriting advanced diagnostic functions from X-431 super scanner and

testing speed is greatly improved.

1.3 Product functions

 Diagnosing: covers a wide range of electrical control systems for any

model from JAC; Diagnosing and software upgrading keep pace with

other products.

 VGA interface available for external display;

 Ethernet interface for connecting wired network;

 Extending functions by connecting it to Scopebox, Sensorbox and

Batterybox.

1.4 Technical specifications

Operation system: Windows Embedded Standard

CPU: 32bits CPU

Display: 7" TFT Hi-brightness color touch screen

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Main unit power supply: DC14V

Working temperature:

-10℃~55℃

Vehicle Type: 12V/24V

Built-in hard disk: 8G

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2 About JAC X-431 3G

2.1 JAC X-431 3G Main set

Figure 2-1 JAC X-431 3G Diagram

2.1.1 Composition

z Main Unit

Including display, diagnosing, printing and all standard functions of

handheld computer; based on Windows operating system; built-in large

capacity hard disk to memorize data; supports Wi-Fi communication.

z Scopebox (Optional)

Special Scopebox and ignition analysis functions for vehicles are

supplied.

z Sensorbox (Optional)

Vehicle sensor analog test and multimeter test are supported.

z Batterybox (Optional)

Detects the vehicle battery status and provides inside-the-vehicle and

outside-the-vehicle testing modes.

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2.1.2 Structure

1. Structure view

Figure 2-2 JAC X-431 3G Main set structure view

Table 2-1: JAC X-431 3G terminals and indicators description

No. Name Descriptions

1 Handle Holding or carrying the main unit.

2 Exhaust vent For expelling heating to ensure normal

temperature of internal parts.

3 VGA terminal Connect to projector or display.

4 LAN terminal Connect to wire network with LAN cable.

5 Diagnose terminal Connect to test cable.

6 USB ports Connect to USB devices. While

connecting function boxes, Scopebox

must be connected to the blue USB port.

7 Hard Disk indicator

(green)

Indicates diagnosis communication state.

8 Power indicator (red)

Indicates power status.

9 Power connector Connect to outer power to supply power or

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charge for main unit.

10 Diagnostic box Communication module between main unit

and vehicle.

11 Printer Print the displayed results.

12 Power switch Press to turn on the device and hold

pressing to turn off the device.

13 Main display Color touch screen to display the function

interface, touch input or manual input is

supported.

2. Scopebox structure (optional)

Figure 2-3 Scopebox structure view

Table 2-2: Scopebox

terminals and indicators description

No. Name Descriptions

1 B type USB port Connect to main unit with USB cable when

it is applied as separated USB device.

2 Power connector Connect to power supply via the power

adaptor.

3 Communication Blinks green during data communication

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indicator

4 Operation indicator

(green)

Keeps lighting after oscilloscope operated.

5 Power indicator

(red)

Keeps lighting after scopebox powered on.

6 1K calibration signal

terminals (2 pcs)

One terminal: 1K square wave signal

output, 2VP-PVP-P.

The other terminal: connect to the ground.

7 CH1 Channel 1

8 CH2 Channel 2

9 CH3 Channel 3

10 CH4 Channel 4

11 External trigger External trigger signal

3. Sensorbox structure (optional)

Figure 2-4 Sensorbox structure view

Table 2-3: Sensorbox terminals and indicators description

No. Name Description

1 Data receiving Indicator (green) for receiving data from main

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indicator unit.

2 Data sending

indicator

Indicator (green) for sending data to main unit.

3 Power indicator It keeps steady on (red) after Sensorbox is

powered on.

4 B type USB port Connect to main unit with USB cable when it is

applied as separated USB device.

5 Power connector

Connect to power supply through the power

adaptor.

6 COM Common terminal of multimeter

7 VΩHz Testing terminal of multimeter

4. Batterybox structure (optional)

Figure 2-5 Batterybox structure view

Table 2-4: Batterybox terminals and indicators description

No. Name Description

1 Battery

connector

Connect to battery via cable for testing battery

2 Power connector

Connect to power supply via the power

adaptor. (unused)

3 B type USB port Connect to main unit with USB cable when it is

applied as separated USB device.

LAUNCH JAC X-431 3G User’s Manual

2.2 JAC X-431 3G Common accessories

Common accessories for each JAC X-431 3G are same, but for different

destinations, the accessories of JAC X-431 3G (such as diagnostic software,

testing connectors) may vary. Please consult from JAC or LAUNCH or check

the package list supplied with JAC X-431 3G together.

Table 2-5: JAC X-431 3G common accessories and descriptions

No.

Name Descriptions View

1 Main test cable Connect JAC X-431 3G

to vehicle’s DLC.

2 Diagnostic

connector

Connect to vehicle’s

DLC. The test cable

has a standard 16PIN

connector. To

determine whether

non-16PIN is required

while testing, please

proceed based on the

on-screen instructions.

3 Cigarette lighter

cable

Obtain power supply

from vehicle’s cigarette

lighter.

4 Power adaptor

Convert 100~240V AC

power supply to 14V

DC power supply.

5 Stylus For clicking or writing

on the screen.

6 Accessories Including User’s

Manual, Service

Manual etc.

LAUNCH JAC X-431 3G User’s Manual

Figure 2-6

2.3 First operation

2.3.1 Turn on

Press the [Power Switch]

button on the main unit, the

system will begin to initialize, as

shown in Figure 2-6.

Note: Hold and press the [Power Switch] button for 6~8 seconds to turn off

the main unit, but this is not recommended, please click [Exit system]

icon on the main menu to turn off the device.

Figure 2-7

After the system completes

initializing, the main menu

shown as Figure 2-7 will appear

on the screen. Here you can

select a certain function and

operate it.

① ②③

Figure 2-8

2.3.2 Icons and function

items

There are three icons on the

top right corner of main menu,

as shown in Figure 2-8.

Signal indicator: Indicate① s current signal and its strength.

② Power indicator: Indicates the power capacity / power charging status /

connection to outer power supply.

LAUNCH JAC X-431 3G User’s Manual

③ Time: Display current local time.

Various function items are listed in the main menu of JAC X-431 3G: Diagnose,

Browser, Oscilloscope, Ignition, Sensor, Multimeter, BatteryTest, Information,

Mailbox, Update, Settings, Help and Exit system, as shown in Figure 2-8.

Function items and descriptions:

[Diagnose]: Judge vehicle technical state, find out trouble location and cause.

[Browser]: Visit the service websites saved in Favorites. (Manually inputting a

website address is temporarily unavailable.)

[Oscilloscope]: Rapidly determine vehicle electrical equipment and circuit

trouble, making the measurement and setting of vehicle electrical equipment

much easier and

intuitive.

[Ignition]: Display and analyze ignition waveforms, assist to detect current

status and relevant performance of the engine.

[Sensor]: Diagnose/simulate vehicle ECU sensor trouble.

[Multimeter]: Measure the physical parameters such as voltage, resistance,

frequency etc.

[BatteryTest]: The most advanced conductance testing technology in the

world is applied to make vehicle battery and charging system testing safe,

rapid and easy.

[Information]: Obtain the relevant information of news and software updating

via X-431 website.

[Mailbox]: Feed back the trouble of the device or vehicle to us by E-mail and

we will give you a professional reply in time.

[Update]: Visit X-431 website by Internet, one-key to update vehicle software,

it is necessary to complete registering before the first operation.

[Settings]: Set the relevant function operations.

[Help]

: Display the relevant help information for users.

[Exit system]: Shut down or restart the main unit.

2.3.3 System Settings

JAC X-431 3G provides the following setting items: Change Language, Wi-Fi

Settings, User Data Import/Export, Date/Time Settings, Power Option, Adjust

Screen Brightness, Screen Calibration, System Clean, System Information,

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U-Disk Update, Network Test, Multimonitor, Network Configuration, X431

Website Domain Settings, Image manager, print manager and About, as

shown in Figure 2-9.

Figure 2-9

1. Change Language

This option is used to define the system language. Simplified Chinese and

English are available. See Figure 2-10.

Figure 2-10

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2. Wi-Fi Settings

This option allows you to configure Wi-Fi network.

Select [Wi-Fi Settings] in [System Settings] and click [OK], the system starts

searching network, as shown in Figure 2-11.

Figure 2-11

It will take some time to search network, after searching, the searched

networks will be listed on the screen, as shown in Figure 2-12.

Figure 2-12

Select one of the network list and click [Link] in Figure 2-12, “Connected”

appears on the screen as shown in Figure 2-13, indicating the device is

LAUNCH JAC X-431 3G User’s Manual

connected to the network successfully.

Figure 2-13

Note: When selecting Wi-Fi to access Internet, please set Wi-Fi properly and

make sure it is connected successfully, otherwise, Browser, Register, Network

Test, Information, Mailbox and Update will become unavailable.

LAUNCH JAC X-431 3G User’s Manual

3. User Data Import/Export

This option enables you to import the saved trouble and diagnostic information

from or export it to another JAC X-431 3G or PC for easy analysis and

comparison.

Select [User Data Import/Export] in [System Settings], a screen shown as

Figure 2-14 will appear.

Figure 2-14

Click [OK] in Figure 2-14, modules will appear on screen for your selection, as

shown in Figure 2-15.

Figure 2-15

LAUNCH JAC X-431 3G User’s Manual

In Figure 2-15, select "Diagnosis" and click [Enter], history files similar to

Figure 2-16 will be listed on the screen.

Figure 2-16

Click the checkbox to select the desired files in Figure 2-16 and click [OK] to

export the data. A dialog box shown as in Figure 2-17 will pop up on the

screen after data is exported successfully. Click

[OK], the [Enter] icon will

become active, and click it to import the history data.

Figure 2-17

Note: If "Export history data failed" appears on screen, please click [Export] to

export the data again.

Method for "Import" is same as "Export". Select the history data and click

[Import]

to import data.

LAUNCH JAC X-431 3G User’s Manual

4. Date/Time Settings

This option is used to set the current date and time.

Select [Data/Time Settings] in the [System Settings] and click [OK], the

system will enter the following screen, as shown in Figure 2-18.

Figure 2-18

Click the on-screen buttons to set the date and time, and click [OK] to confirm.

5. Power Option

Through it, you can have a general knowledge of current power information.

Select [Power Option] in [System Settings] and click [OK], a screen similar

to Figure 2-19 will appear:

Figure 2-19

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6. Adjust Screen Brightness

It is used to adjust the brightness of the screen to your preference.

Select [Adjust Screen Brightness] in [System Settings] and click [OK], a

screen shown as Figure 2-20 will appear.

Figure 2-20

Drag the slider with the stylus to adjust (0 -100), and click [Return] to exit.

7. Screen Calibration

This option lets you calibrate the touch screen.

Select [Screen Calibration] in [System Settings] and click [OK], a screen

similar to Figure 2-21 will appear.

Figure 2-21

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In Figure 2-21, properly click the cross symbol on the screen, the cross symbol

changes to blue with a hint sound, then one calibration has been finished. After

calibrating all crosses, the system will automatically return to [System Settings]

interface.

8. System Clean

This option enables you to release disk space, delete unnecessary models,

versions, recordings, and also clear snap file and video text which was

recorded by oscilloscope and ignition mode, etc.

It includes "Clear history data" and "Clear diagnosis software - Car".

Select [System Clean] in [System Settings] and click [OK], the interface will

be shown as Figure 2-22.

Figure 2-22

Click [Diagnostic] to enter Figure 2-23.

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Figure 2-23

1. In Figure 2-23, select [Clear history data] and click [Enter] to enter Figure

2-24.

Select one item that you want to clear and click [Clear].

Figure 2-24

Click [OK] in the dialog box shown as Figure 2-25, and the item will be

cleared successfully.

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Figure 2-25

2. On figure 2-23, select [Clear diagnosis software-Car] and click [Enter].

Select one car model that you want to clear, as shown in Figure 2-26 and click

[Fast Clean].

Figure 2-26

9. System Information

This option is used to display the system information.

Select [System Information] in [System Settings] and click [OK], then click

[Update] according to the hints, the latest system information will appear on

the screen, as shown in Figure 2-27.

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Figure 2-27

10. U-Disk Update

You can download the necessary software from X431 website in the U disk,

and then connect it to JAC X-431 3G to update.

Steps to download software with U disk:

1. Connect the U disk to a USB port of PC.

Access www.x431.com.

3. Log in the website. (Please register your JAC X-431 3G before operating

it to obtain the User Name and Password)

4. Enter the Download Center.

5. Download the necessary software, keep as it is and save it under the

root directory of U disk.

Note: Before accessing X-431 website, please check the network configuration

or Wi-Fi connection.

Select [U-Disk Update] in [System Settings] and click [OK], a screen shown

as Figure 2-28 will appear.

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Figure 2-28

Click [Find], the system starts searching the software in the U disk, as shown

in Figure 2-30.

Figure 2-29

Mark a "Check" in the box before the software you want to update in Figure

2-29 and click

[Upgrade], the system begins to update. After updating,

"Installation successful" appears in column "Installation status", as shown in

Figure 2-30.

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Figure 2-30

11. Network Test

This option helps you detect the network configuration and whether it can

browse web page normally.

Select [Network Test] in [System Settings] and click [OK], a test result page

will appear on the screen. Figure 2-31 indicates that network is detected

successfully.

Figure 2-31

Note: If network detecting failed, please check the network configuration or

Wi-Fi connection, and detect again.

LAUNCH JAC X-431 3G User’s Manual

12. Multimonitor

Select [Multimonitor] in [System Settings] and click [OK] to enter.

Figure 2-32

Please confirm that VGA cable is connected to VGA connector of JAC X-431

3G, select [Projector Mode] and click [Enter], projecting effect will appear in a

while. You can click [Config] to modify the project resolution.

13. Network Configuration

This option is used to configure wired network options.

Wired Network Configuration interface is shown in Figure 2-33.

Figure 2-33

LAUNCH JAC X-431 3G User’s Manual

Operations:

Automatically or manually obtain IP includes:

A. You can select "Automatic DNS server address" or "Use the following DNS

server address" to obtain IP address.

B. You need to set DNS to manually input IP address.

Suggestion: If there is no network limited, please keep the setting as default,

that means, Automatic IP address and Automatic DNS server address should

be checked. Thus, if you use DHCP to set IP address, no other settings are

needed.

Note: If you use wired network but not Wi-Fi to access Internet, please

configure network properly, otherwise, the following functions may be

abnormal: Browser, Register, U-Disk Update, Network Test, Information,

Mailbox and Update.

14. X431 Website Domain Settings

The system provides two Domain names for users’ option.

Select [X431 Website Domain Settings] in [System Settings] and click [OK],

the interface will be shown as Figure 2-34.

Figure 2-34

Note: The default website is Hong Kong SAR.

LAUNCH JAC X-431 3G User’s Manual

15. Images Manager

This option is used to manage your snapshots. Screenshot can be done from

the [System] menu once it is available on the screen and the screenshot files

are saved in the image folder.

Select [Images manager] in [System Settings] and click [OK] to enter the

images manager interface. Click [PgUP] / [PgDn] to scroll to different pages;

tick the check box to select the desired image and then click

[Rename]/[Hide]/[Delete] to perform the corresponding operations.

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3. How to diagnose

3.1 Preparation and Connections

3.1.1 Preparation

1. Normal testing conditions

z Turn on the vehicle power supply.

z Vehicle battery voltage range should be 11-14V and working voltage of

JAC X-431 3G is 12V.

z Throttle should be closed at its close position.

z Ignition timing and idle speed should be within specified range; water and

transmission oil temperature are within normal working range (water

temperature is 90-110℃ and transmission oil temperature is 50-80℃).

2. Select testing connectors

Please select the corresponding connectors according to the on-screen

instructions while JAC X-431 3G is testing vehicles which are equipped with

universal OBD II 16 PIN diagnostic socket.

3.1.2 JAC X-431 3G connections

JAC X-431 3G connection steps are as follows:

z Connect one terminal of main test cable to diagnostic terminal of JAC

X-431 3G.

z Connect the other terminal of main test cable to vehicle’s DLC.

3.2 Start diagnosing

JAC X-431 3G can test a lot of JAC series and models. Please refer to the

"Update" on the main menu interface for more details of JAC X-431 3G and

download the latest diagnostic programs to fully enjoy its powerful diagnostic

functions.

3.2.1 How to start diagnostic program

Make sure all connections are properly made (For detailed connection, please

refer to 3.1.2), power on to enter the main menu, and then click "Diagnose",

the interface will display as following figure 3-1.

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Figure 3-1

Buttons description:

[System]: To display the desktop, view current version No. and exit the

program.

[Help]: To view help information for current operation.

[File]: To view "Recently used models" and "Historical driving records".

In Figure 3-1, select "DEMO" and the screen will display the selection menu for

DEMO diagnosis program version, as shown in Figure 3-2.

Note: The operations for other models, series and systems are similar to

"DEMO". Please refer to the relevant operation interface for details. Here only

take the "DEMO" for an example.

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Figure 3-2

Buttons descriptions:

[System]: To display the desktop functions, view current version No. and exit

the program.

[Help]: To view help information for current operations.

[File]: To view "Recently used models" and "Historical driving records".

[PgUp.]: To view the previous page.

[PgDn.]: To view the next page.

[OK]: To go to next step.

[Back]: To go back to the previous interface.

3.3 How to diagnose

In Figure 3-2, click [OK] to proceed to Figure 3-3.

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Figure 3-3

Note: Diagnosing different vehicles has the same operation steps (including

the test model, system, model year and the DLC selection options), please

refer to the page prompts during operation.

Buttons description:

[System]: To display the desktop functions, view current version No. and exit

the program.

[Help]: To view help information for current operations.

[File]: To view "Recently used models" and "Historical driving records".

[PgUp.]: To view the previous page.

[PgDn.]: To view the next page.

[Reset]: To verifies the SMARTBOX again.

[Back]: To go back to the previous interface.

Click [Engine] in Figure 3-3 (If there is more than one page of system menu,

click [Next Pg.] to view.), the system message "Communication is initialized…"

will appear on the screen, as shown in Figure 3-4.

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Figure 3-4

Note: The test method is similar for different systems, here take [Engine] for an

example.

After communicating, the interface will skip to the function menu of [Diagnose],

as shown in Figure 3-5:

Figure 3-5

In Figure 3-5, there are four functions of [Engine]: "Read trouble code", "Clear

trouble code", "Read data stream" and "Special function".

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3.3.1 Read trouble code

Click [Read trouble code] in Figure 3-5, JAC X-431 3G will start executing

this function. After testing, results will appear on screen, as shown in Figure

3-6.

Figure 3-6

Buttons description:

[System]: To display the desktop, view current version and exit the program.

[File]: To view "Historical driving records" and “Print" current DTCs.

[Search]: To search the corresponding details of fault code by Google through

Internet.

[Back]: To go back to the previous interface.

If the tested system has no DTCs, a message will appear on the screen,

indicating that there are no DTCs in the system.

3.3.2 Clear trouble code

Click [Clear trouble code] as shown in Figure 3-7, all existing trouble code

will be cleared.

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Figure 3-7

If trouble codes are cleared successfully, a prompt message will appear on the

screen, as shown in Figure 3-8. If all trouble codes have been cleared, or there

are no trouble codes, "No DTCs" will appear on the screen.

Figure 3-8

3.3.3 Read data stream

Click [Read data stream] as shown in Figure 3-9, you can read the running

parameters.

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Figure 3-9

As Figure 3-10 shows, the selected datastream are displayed in blue.

Figure 3-10

Click [OK] in Figure 3-10, dynamic data of the selected datastream will appear

on screen, as shown in Figure 3-11.

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Figure 3-11

To view the dynamic waveform of the selected data stream, click [Advanced]

-> [Plot] in Figure 3-11, as shown in Figure 3-12.

Figure 3-12

Buttons description:

[Plot]: To display single data stream waveform.

[Record]: To record the dynamic data stream during a certain time. (After

clicking, [Record] becomes [Stop])

[Help]: To view the help information of current operation.

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Click [Plot] in Figure 3-12, the waveform of "O2 sensor" will be displayed on

the screen, as shown in Figure 3-13.

Figure 3-13

In Figure 3-13, click [Plot-2], [Plot-3], [Plot-4]…etc., four waveforms of

selected data stream displayed in different colors will appear on the screen,

which helps you view easily, as shown in Figure 3-14.

Figure 3-14

3.3.4 Special Function

This function is applied to detect whether the system parameters are normal or

not.

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Click [Special function] in function menu, the screen will be shown as Figure

3-15.

Figure 3-15

Note: We just take [1# injector] as an example to show how to set the special

function.

To detect whether [1# injector] works normally or not, click [1# injector].

Figure 3-16

After detecting, the result will appear on the screen, as shown in Figure 3-17.

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Figure 3-17

Note: If [1# injector] works abnormally, the system will fail to indicate that the

part has some trouble.

3.3.5 Driving record management

View the recorded and saved data streams and waveforms (To "Record", click

[Advanced] - > [Record] button on the running interface of data streams).

Click [File] -> [History] button on the "Select maker" menu, as shown on

Figure 3-18.

Figure 3-18

The system switches to Figure 3-19, listing datastream information for different

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vehicles and records in different time.

Figure 3-19

Select the one you want to view and click [Open] in Figure 3-19, recorded

datastream will be shown on the screen, similar to Figure 3-20.

Figure 3-20

Select the desired datastream and click [OK], then the recorded dynamic

datastream information will appear, as shown in Figure 3-21.

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Figure 3-21

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3.4 Flow chart for entering diagnostic program

Press Power Switch to turn on

Single click [Diagnose] in the main menu.

Select “JAC maker” interface of X-431 3G

Select the model per the icon. Here

only take some functions of DEMO for

example as the operations on the other

models and systems are the same.

Enter diagnose interface

Read

DTCs

Clear

DTCs

Read data

streams

Special

function

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4. Browser

Browser is available on JAC X-431 3G, which helps you view and obtain

relevant service documents from the third-party website saved in Favorites.

Click [Browser] on the main menu to enter browser, as shown in Figure 4-1.

Figure 4-1

Click [Favorites] and select [View], the website list will appear on the screen,

as shown in Figure 4-2.

Figure 4-2

Select a desired website, and click [Open link] to browse the contents of the

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website quickly.

Notes:

1. Before operating Browser, please make sure that Network Configuration or

Wi-Fi has been connected successfully.

2. Only the website listed in Favorites can be viewed presently, manually

inputting website address is unavailable now.

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5. Information

This option enables you to obtain the latest news and software download

information about the device.

5.1 News

Click [Information] on the main menu, the system starts checking network, as

shown in Figure 5-1.

Figure 5-1

After network accesses successfully, [News] interface will appear on the

screen, as shown in Figure 5-2.

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Figure 5-2

Buttons description:

[System]: To display the desktop, view current version or exit the program.

[Help]: To view the help information of current operation.

[Info]: To switch to "Software downloads Information" interface.

[PgUp]: To view the previous page.

[PgDn]: To view the next page.

[View]: To view the details.

[Retry]: To re-try the current operation.

Select one certain news in Figure 5-2 and click [View], detailed information will

appear on the screen, as shown in Figure 5-3.

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Figure 5-3

Buttons description:

[PgUp]: To view the previous page.

[PgDn]: To view the next page.

[Return]: To return to the previous interface.

[NextItem]: To view the next item.

If read timeout, a prompt message will appear on the screen, as shown in

Figure 5-4. In this case, please check your network configuration and click

"Retry".

Figure 5-4

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5.2 Software download information

Click [Info] in Figure 5-2, the system will switch to software download info

interface, as shown in Figure 5-5.

Figure 5-5

Button description:

[System]: To display the desktop, view the version or exit the program.

[Help]: To view the help information of current operation.

[News]: To switch to "News" interface.

[PgUp]: To view the previous page.

[PgDn]: To view the next page.

[View]: To view the details.

[Retry]: To retry the same operation.

In Figure 5-5, select one of the software programs and click [View], the system

will enter the content page, as shown in Figure 5-6.

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Figure 5-6

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6. Mailbox

JAC X-431 3G has a Mailbox function, by which you can send E-mail to us

once you come across any question or problem unresolved, and we will give

you professional answer in time.

6.1 Read mail

Click [Mailbox] on the main menu, system starts checking network, as shown

in Figure 6-1.

Figure 6-1

After accessing network, the system will display as Figure 6-2.

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Figure 6-2

In Mailbox interface, there are four items: Unread mail, Read mail, Sent mail

and Draft box. Select one (e.g. Read mail), and click [View] to read the details.

Figure 6-3

6.2 New mail

Click [NewMail] in Figure 6-3, mail writing interface appears on the screen, as

shown in Figure 6-4.

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Figure 6-4

Write down the title and contents by stylus manually, as shown in Figure 6-5.

Figure 6-5

Buttons description:

[Save]: To save a mail that is not finished or will be sent later.

[Send]: To send the mail.

[Return]: To return to the previous interface.

When a new mail is finished, click [Send]. If the mail is sent out successfully, a

dialog box will appear as shown in Figure 6-6.

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Figure 6-6

If the mail fails to send out, a prompt message will appear on the screen, as

shown in Figure 6-7.

Figure 6-7

Click [OK] in Figure 6-7 to send the mail again, or click [Cancel] to cancel

sending.

Note: Please check the network configuration or Wi-Fi connection before

operating Mailbox function.

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7. Update

JAC X-431 3G provides quick and easy software update service, by which you

can enjoy all update services including download and update the software.

Note: Enter the update center, vehicle software which can be updated are

default to check, you can click [Update] to perform one-key update. You can

also click [Select] to select all or cancel all.

7.1 Register

To operate this device, you have to experience a product registration. After

entering the function modules, a registration page will appear automatically

and once registering is complete, this page will never appear again.

Note: Before registering, please check you network configuration or Wi-Fi

connection.

Click [Update] on the main menu, terms of update service will be shown on

the screen, as shown in Figure 7-1.

Figure 7-1

Read the "Terms of Service of X431 Website" and click [Agree] to proceed to

the next step, as shown in Figure 7-2. Some registration information are

required to fill (by stylus or manually input).

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Fill the product information

Figure 7-2

By default, Product SN is created by system. While purchasing this product,

you will be offered one envelop, in which there is the register password

(secret). Dealer code is 86M or 86A. Complete filling the information in Figure

7-2 and click [Next step], a new dialogue box pops up, then fill the detailed

user information (items with "*" must be filled, confirm password must be same

as login password, Email must be effective and same as confirm Email, we will

send you the secret information to this Email after registering successfully.).

Click [Register], a prompt message indicating that you have registered

successfully will appear on the screen, and you can enter purchasing or

download center.

Note: Please contact customer service of JAC or LAUNCH if you can not

7.2 Update

While updating, the system will check network configuration, perform ID

verification and access latest version information, as shown in Figure 7-3.

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Figure 7-3

Software update list appears on the screen, as shown in Figure 7-4.

Figure 7-4

In Figure 7-4, Current Ver. indicates current version No. Update Ver. stands for

the lowest version that can be installed currently and Top version means the

current top version.

Click the check box to select one or several desired software. To select all

software, just tick the box before the “Logo” on the top of the screen.

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Button description:

[System]: To display the desktop, view the current version or exit the program.

[Help]: To view the help information of current page operation.

[Update]: To execute software update operation.

[History]: To select version that can be downloaded or corresponding vehicle.

Select the desired software and update them together for corresponding

vehicles, then click [Update].

Here, we take "JAC" as an example to explain one-key update.

Select "JAC" and click [Update], the software will be downloaded and installed

automatically, as shown in Figure 7-5 and Figure 7-6.

Figure 7-5

Figure 7-5 shows the downloading progress. When "100%" appears, it

indicates that the software has been downloaded completely.

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Figure 7-6

Figure 7-6 shows the installation state. If "Installation succeed" appears, it

indicates that installation has completed.

If the network configuration is not correct, software download will fail and

[Retry] turns active. In this case, please check the network and download it

again.

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8. Optional functions of JAC X-431 3G

8.1 Oscilloscope

JAC X-431 3G has an optional function of oscilloscope, which can make the

auto repair technician quickly judged the faults on automotive electronic

equipment and wiring. If using an ordinary oscilloscope to test the electronic

equipment, the biggest problem is how to set the oscilloscope (adjust the

display parameters of oscilloscope to make the waveform become clear), while

using the automotive oscilloscope can make the setting on testing automotive

electronic equipment become simple and intuitive (via automatic setting

function), just via clicking "Automatic settings", the waveform can be directly

observed without any setting and adjustment. For some automotive electronic

equipment, the signal change rate is very fast, whose cycle reached a

thousandth, besides, many fault signals are intermittent, and unsteady, which

makes the ordinary equipments, such as decoder, Multimeter etc., hard to

capture such fault signal and affects the fault diagnosis and trouble; and the

oscilloscope sweep speed is far greater than the signal frequency of such

vehicles, usually 5-10 times of the measured signal. The automotive

oscilloscope not only can quickly capture the circuit signal, but also can slowly

display the waveform to observe and analyze. It can also record and store the

tested signal waveform which can be playback to observe for the fast signal,

having great convenience to failure analysis. Either high-speed signal (e.g.:

injection nozzle, intermittent fault signal) or the slow-speed signal (e.g. the

throttle position change and the oxygen sensor signal) can be observed

through automotive oscilloscope in an appropriate waveform.

We know that the electronic signal can be compared and judged via testing

five parameters indexes. The five parameters indexes are the amplitude (the

maximum voltage of signal), the frequency (the cycle time of signal), the shape

(the appearance of signal), the pulse width (the duty cycle or the time range of

signal), and the array (the repetition characteristic of signal), which can be

tested, displayed, saved by the automotive oscilloscope. Via the waveform

analysis can further detect the circuit fault on sensors, actuators, circuits, and

electronic control units, etc.

For detailed operations and specifications, please refer to JAC X-431 3G

Scopebox user’s manual.

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8.2 Ignition

The ignition system is the system which has greatest impact on the

performances of gasoline engine, as the statistical data shows that nearly half

of the failures are caused by poor work of electrical system. And the

performance tests of engine often start from the ignition system. Nowadays

ignition system includes distributor and distributorless. Distributorless includes

independent ignition and simultaneous ignition.

1. Distributor ignition system: conventionally includes contact breaker

(commonly known as the platinum) contact-controlled ignition system and

magnet, infrared or hall components breakless ignition system.

2. Direct ignition system: crankshaft sensor send out the ignition timing signal

and cylinder identification signal for the specified cylinder send out the

specified signal in specified time, each cylinder has its independent ignition

coil.

3. Simultaneous ignition system: two cylinders share one ignition coil, when

two cylinder pistons reach top dead center at the same time (one is

compression, the other is the exhaust), two spark plugs will be ignited at the

same time, at this time, the ignition for the former cylinder with

high-pressure low temperature gas mixture, the ignition is valid, while for

the latter one with low-pressure high temperature exhaust gas, the ignition

is invalid.

JAC X-431 3G can test and analyze the primary/secondary signal coming from

various engine ignition systems.

For detailed operations and specifications, refer to JAC X-431 3G Scopebox

user’s manual.

8.3 Sensor

Vehicle sensors are the signal input devices for electrical control systems,

which can transform all kinds of running parameters, such as vehicle speed,

coolant temperature, engine RPM, air flow, throttle opening, etc., into the

electronic signal for the vehicle computer who can optimize the engine running

status per the above-mentioned parameters to keep the engine working in a

prime status. As the sensors can be separated into many types, when you

troubleshoot a related-sensor fault, you shall focus not only on the sensor itself,

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but also the whole trouble circuit and variety of sensor's parameters while

running. “Sensor simulation test” function is specially developed to diagnose

and simulate vehicle sensor faults, including “DC voltage simulation”, “Fixed

frequency simulation”, “Predefined waveform simulation”, and “Hand-drawing

waveform simulation”, which can help customer to diagnose and simulate the

vehicle sensors quickly and conveniently.

For detailed operations and specifications, refer to JAC X-431 3G Sensorbox

user’s manual.

8.4 Multimeter

JAC X-431 3G provides an optional function of “Multimeter”, by which you can

perform voltage, resistance or frequency test.

For detailed operations and specifications, refer to JAC X-431 3G Sensorbox

user’s manual.

8.5 BatteryTest

JAC X-431 3G provides an optional function of “BatteryTest”, which adopts the

most advanced conductance testing technology in the world, detects the

vehicle battery status and provides in-vehicle and out-vehicle testing modes.

In-vehicle testing can complete charging system and ignition system testing.

Several battery standards and regulars are supported, including CCA, DIN,

IEC, EN, JIS, SAE and GB etc.

For detailed operations and specification, refer to JAC X-431 3G Batterybox

user’s manual.

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9. FQA

JAC X-431 3G is a hi-tech product. With the development of modern

automotive industry, more and more new technologies will be adopted and

there may be questions during operation, including the software, hardware,

operation and something related to the vehicles. Read the user’s manual to get

the answer whenever you have any question, or contact our Customer Service

Center for help. Here, we list some frequently asked questions and answers

relating to the using of JAC X-431 3G.

About Hardware

Q: Why does the LCD touch screen respond so slowly in cold whether?

A: It is because the ambient temperature is close to the lower limit of

operating temperature range (-10-55℃). Under this situation, it is

necessary to warm up the machine for 30 minutes before test.

Q: There is only backlight and no character on the screen. What should

I do?

A: Check if the power is well connected. Turn off the machine, unplug the

power connector and re-plug it. Turn on the machine after it has been

connected to the power for 1 second.

Q: Why there is no response or response incorrectly while clicking the

screen with touch pen?

A: Please calibrate the screen again. Refer to “2.3.3 7. Screen Calibration”

for details.

About Operations

Q: System halts while reading data stream.

A: Connector is loosen, shutdown the device and connect well to test again.

Q: E-mail sending failed.

A: Check network configuration.

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Q: Fail in Mail operation while feedback problems.

A: Product is not registered, please register and operate again.

Q: Software download failed.

A: Check network configuration.

Q: Blank screen after operating for a period.

A: When there is no external power supply connected, power of battery

exhausts, Please connect external power supply.

About Vehicles

Q: Main screen blinks at the moment when engine ignition.

A: It results from electromagnetic interference and this is normal phenomena.

Q: Detecting interrupted while testing.

A: It results from electromagnetic interference or loose connection.

Q: No response while communicating with vehicle ECU.

A: Make sure that the voltage of vehicle battery is in specified range, the

throttle is in the closed position, and all electrical consumers are turned off,

and water temperature is in specified range.

Q: Some systems can not be diagnosed

A: The diagnostic socket for the system on some early vehicle may be

separated. Proceed according to the instructions to choose the right

connector and insert it properly.

Q: No corresponding trouble codes description.

A: It is generally normal circuit “sequel”, search the most approaching trouble

code and analyze it.

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Warranty

THIS WARRANTY IS EXPRESSLY LIMITED TO PERSONS WHO

PURCHASE LAUNCH PRODUCTS FOR PURPOSES OF RESALE OR USE

IN THE ORDINARY COURSE OF THE BUYER’S BUSINESS.

LAUNCH electronic product is warranted against defects in materials and

workmanship for one year (12 months) from date of delivery to the user. This

warranty does not cover any part that has been abused, altered, used for a

purpose other than for which it was intended, or used in a manner inconsistent

with instructions regarding use. No agent, employee, or representative of

LAUNCH has any authority to bind LAUNCH to any affirmation, representation,

or warranty concerning LAUNCH automotive meters, except as stated herein.

Order Information

Replaceable and optional parts can be ordered directly from JAC. Your order

should include the following information:

1. Quantity

2. Part number

3. Item description

Customer Service Department

If you have any questions on the operation of the unit, please contact

customer service of JAC.

If your unit requires repair service, return it to the manufacturer with a copy of

the sales receipt and a note describing the problem. If the unit is determined to

be in warranty, it will be repaired or replaced at no charge. If the unit is

determined to be out of warranty, it will be repaired for a nominal service

charge plus return freight. Send the unit prepaid to:

Attn: Customer Service Department

LAUNCH TECH. CO., LTD.

Launch Industrial Park, North of Wuhe Avenue, Banxuegang, Bantian,

Longgang, Shenzhen, Guangdong P.R.China, 518129

Launch website:

http://www.cnlaunch.com

JAC X-431 3G SMARTBOX Series No.

Notes:

1. The Launch Tech Co., Ltd. shall label the "Series No." before delivering;

2. Dealer Code is 86M or 86A.

3. The “SMARTBOX SN” and “Dealer Code" need to be on site while

updating online via wired network or Wi-Fi. See "Update" in this manual

for the details. Please keep this manual well.

Statement: LAUNCH reserves the rights to make any change to product

designs and specifications without notice. The actual object may differ a little

from the descriptions in the manual in physical appearance, color and

configuration. We have tried our best to make the descriptions and illustrations

in the manual as accurate as possible, and defects are inevitable, if you have

any question, please contact local dealer or after-sale service center of

LAUNCH, LAUNCH does not bear any responsibility arising from

misunderstandings.