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LAUNCH
X-431 Diagun III English User's Manual
Copyright Information
Copyright © 2012 by LAUNCH TECH. CO., LTD. All rights reserved. No part
of this publication may be reproduced, stored in a retrieval system, or
transmitted in any form or by any means, electronic, mechanical,
photocopying, recording or otherwise, without the prior written permission of
LAUNCH. The information contained herein is designed only for the use of
this unit. LAUNCH is not responsible for any use of this information as
applied to other units.
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.
Trademark Information
LAUNCH is a registered trademark of LAUNCH TECH CO., LTD. (also
called LAUNCH for short) in China and other countries. All other LAUNCH
trademarks, service marks, domain names, logos, and company names
referred to in this manual are either trademarks, registered trademarks,
service marks, domain names, logos, company names of or are otherwise
the property of LAUNCH or its affiliates. In countries where any of the
LAUNCH trademarks, service marks, domain names, logos and company
names are 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
trademark, service mark, domain name, logo, or company name of LAUNCH
or any third party without permission from the owner of the applicable
trademark, service mark, domain name, logo, or company name. You may
contact LAUNCH by visiting the website at www.cnlaunch.com, or writing to
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Summary of Contents for LAUNCH TECH X-431 Diagun III

  • Page 1 X-431 Diagun III English User’s Manual Copyright Information Copyright © 2012 by LAUNCH TECH. CO., LTD. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of LAUNCH.
  • Page 2 LAUNCH X-431 Diagun III English User’s Manual 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.
  • Page 3 LAUNCH X-431 Diagun III English User’s Manual Precautions on Operating Vehicle’s ECU Do not disconnect the vehicle inner consumer when the ignition switch is on. High voltage transients may encounters at the moment of disconnecting, and thus may damage sensors and ECU.
  • Page 4 CONNECTOR to avoid communication interruptions. Do not insert and pull out TF card when the appliance is working. Put the stylus into the slot at the back of X-431 Diagun III main unit after operation, and place the cables, connectors and other accessories into box.
  • Page 5: Table Of Contents

    2.2 Port and Indicator Descriptions ........3 2.3 X-431Diagun General Components ......3 2.4 X-431 Diagun III Specifications ........6 2.5 Starting X-431 Diagun III for the first time ....7 2.5.1 Power on............7 2.5.2 Calibrate touch screen ........8 2.5.3 Desktop and status bar ........
  • Page 6 LAUNCH X-431 Diagun III English User’s Manual 3.1.3 Connections ........... 16 3.2 Begin to Diagnose Vehicle ........17 3.2.1 Enter desktop..........18 3.3 How to Diagnose............20 3.3.1 Read trouble code.......... 22 3.3.2 Print ............... 22 3.3.3 Clear trouble code.......... 23 3.3.4 Read data stream ..........
  • Page 7: Introduction

    X-431 Diagun III stands for Car Cloud logo. Car Cloud is a state-of-an-art individual application product, which is newly developed based on our LAUNCH’s vehicle diagnostic devices and technology service...
  • Page 8: Knowledge Of X-431 Diagun Iii

    2 Knowledge of X-431 Diagun III 2.1 X-431 Diagun III main set X-431 Diagun III includes: X-431 Diagun III main unit and DBScar diagnostic connector. See Fig.2-1. X-431 Diagun III main unit communicates with the DBScar diagnostic connector via wireless Bluetooth (also supports cable connection).
  • Page 9: Port And Indicator Descriptions

    X-431 Diagun III English User’s Manual 2.2 Port and Indicator Descriptions Fig. 2-2 shows all ports and indicators of X-431 Diagun III: Fig. 2-2 X-431 Diagun III main unit ports and indicators Table 2-1 illustrates all ports and indicators of X-431 Diagun III:...
  • Page 10 LAUNCH X-431 Diagun III English User’s Manual Name Descriptions Picture X-431 Diagun III Main unit screen main unit contains operation buttons, test result and help. DBScar A diagnostic connector diagnostic compatible with connector OBDⅡ-16 pin connector X-431 Diagun III...
  • Page 11 LAUNCH X-431 Diagun III English User’s Manual TF card to store diagnostic program and data TF card reader to read and store data, and for online update when connected to PC Printer cable connect X-431 Diagun III main unit to the printer...
  • Page 12: X-431 Diagun Iii Specifications

    LAUNCH X-431 Diagun III English User’s Manual 2.4 X-431 Diagun III Specifications Operating System: WINCE 5.0 CPU: 400 MHz ARM9 Memory Card: 1G TF Card Main Unit: Universal Serial Bus/USB Main Unit Power: DC5V X-431 Diagun Connector: DC12V Printer Interface: USB Display Screen: 480X272, 4.3-inch LCD with touch screen...
  • Page 13: Starting X-431 Diagun Iii For The First Time

    LAUNCH X-431 Diagun III English User’s Manual 2.5 Starting X-431 Diagun III for the first time 2.5.1 Power on Press POWER key at the top right corner of the main unit. Main unit screen will display initializing interface, as shown on the left.
  • Page 14: Calibrate Touch Screen

    LAUNCH X-431 Diagun III English User’s Manual 2.5.2 Calibrate touch screen ‘Calibrate Touch Screen’ interface is shown on Fig. 2-4. Click the cross cursor on the screen accurately by order, once it changes, you complete a calibration. Note: If you click the cross cursor inaccurately, it will repeat on the screen until the calibration completed.
  • Page 15: Desktop And Status Bar

    LAUNCH X-431 Diagun III English User’s Manual 2.5.3 Desktop and status bar There is a status bar shown on X-431 Diagun III desktop, as shown on Fig. 2-6. A Bluetooth icon: it appears after Bluetooth of X-431 Diagun III is activated.
  • Page 16: Recharging Method

    Fig. b Fig. c 2.6.3 Recharging Method Use the included charger to recharge X-431 Diagun III (see the No.10 of table 2-1 in chapter 2.2 for details). 2.6.4 Description of the Power Indicator State Recharge it under conditions of power off, power on and stand-by mode.
  • Page 17: System Settings

    LAUNCH X-431 Diagun III English User’s Manual 2.7 System settings Here we will introduce how to make system settings. 2.7.1 System information To view system information. On X-431 Diagun III desktop, click “System Settings” to enter setting options interface, as shown on Fig. 2-7.
  • Page 18: Power Management

    LAUNCH X-431 Diagun III English User’s Manual 2.7.2 Power management It allows you to define power options. On the system setting main menu, click “Power management”, the system will enter Fig. 2-9. Click to set the options. After setting, click “Save” to save your changes.
  • Page 19: Set Date/Time

    Fig. 2-11 2.7.5 Set default Bluetooth This option is used to set the default Bluetooth device that X-431 Diagun III is linked. On the system setting main menu, click “Set default Bluetooth”, the system will start searching Bluetooth devices, and a screen similar to Fig.
  • Page 20: Screen Calibration

    Bluetooth”, the system will automatically link with the default Bluetooth device. Note: Fig. 2-13 1. While using X-431 Diagun III for the first time or after replacing a new DBScar connector, please set the default Bluetooth. 2. In “Diagnosis via Bluetooth” mode,...
  • Page 21: Diagnosing

    (water temperature is 90 – 110°C and transmission oil temperature is 50 – 80°C). Select Test Connector X-431 Diagun III is armed with an OBDⅡ 16PIN connector. Select the corresponding connector (optional) when testing a vehicle with non-OBDⅡ 16PIN DLC.
  • Page 22: Connections

    Cable ( wired connection) Connection Procedure of X-431 Diagun III: Insert the TF card into the slot; Connect one end of the X-431 Diagun III main unit diagnostic cable to the USB port of X-431 Diagun III main unit; Link the other end of X-431 Diagun III main unit diagnostic cable with the Micro USB port of the DBScar diagnostic connector;...
  • Page 23: Begin To Diagnose Vehicle

    X-431 Diagun III English User’s Manual Fig. 3-2 Bluetooth (wireless) / Cable (wired) connections Note: If battery power of X-431 Diagun III main unit is running low, use the charger to recharge it: Insert one end (20PIN Male) of the charger into the USB port of X-431Diagun main unit and plug the other end in AC 100-240V power socket.
  • Page 24: Enter Desktop

    LAUNCH X-431 Diagun III English User’s Manual 3.2.1 Enter desktop After X-431 Diagun III is properly connected (see chapter 3.1.3 for details), press the POWER button of the main unit to turn it on and enter the calibration interface (see chapter 2.5.2). Once the...
  • Page 25 Fig. 3-4. If you have set the default Bluetooth, the system will directly enter the vehicle selection interface. Note: While using X-431 Diagun III for the first time or after replacing a new DBScar connector, please set the default Fig. 3-4...
  • Page 26: How To Diagnose

    LAUNCH X-431 Diagun III English User’s Manual On vehicle selection interface, click DEMO and the screen will enter version selection interface (See Fig. 3-5), select the version you need. Note: The operations of other makes and models, and systems are the same as DEMO.
  • Page 27 LAUNCH X-431 Diagun III English User’s Manual Click “DEMO”, the screen will display as Fig. 3-7. Button Descriptions: [Return]: return back to the previous interface. [Reset]: to exit the current operation if bug occurs and return to the vehicle selection screen.
  • Page 28: Read Trouble Code

    LAUNCH X-431 Diagun III English User’s Manual 3.3.1 Read trouble code Click [Read trouble code] to perform this function. The test result will be displayed on the screen, as shown on Fig. 3-9. If no fault codes are found on the tested system, the system will prompt you no fault code.
  • Page 29: Clear Trouble Code

    LAUNCH X-431 Diagun III English User’s Manual current screen. After printing, the system will exit the print interface. 3.3.3 Clear trouble code Click [Clear trouble code] on Fig. 3-11, it starts to erase fault code. Fig. 3-11 "Clear fault code succeed" will appear if succeed (See Fig.
  • Page 30: Read Data Stream

    LAUNCH X-431 Diagun III English User’s Manual 3.3.4 Read data stream Click [Read data stream] on the function menu to read the datastream from ECU, as shown on the left. Fig. 3-13 The selected datastream items are displayed in blue, as shown on Fig.
  • Page 31 LAUNCH X-431 Diagun III English User’s Manual Click [OK], the dynamic data of the selected datastream item would be displayed, as shown on Fig. 3-15. Click [Record] save dynamic datastream in a specific duration, click [Stop] to complete the record.
  • Page 32: Special Function

    LAUNCH X-431 Diagun III English User’s Manual 3.3.5 Special function This function is designed to test whether system parameters are normal or not. Click [Special function] on the function menu, as shown on the left. Note: Here take [Cylinder 1# injector] for example.
  • Page 33: History Data Management

    LAUNCH X-431 Diagun III English User’s Manual After finished, the screen will appear as shown on the left. Note: If it fails to perform and [1# injector] cannot work normally, it indicates that malfunctions exist in the related components.
  • Page 34 LAUNCH X-431 Diagun III English User’s Manual After clicking, the screen displays a list of datastream file recorded in specific durations for the tested vehicle make, as shown on the left. Click [OK] to view the recorded datastream of the selected model in a specific duration.
  • Page 35: Capture Screen

    LAUNCH X-431 Diagun III English User’s Manual After selecting, click [OK], the recorded dynamic data will appear again, as shown on the left. Button Descriptions: [Left]: show the hidden datastream on the left. [Right]: show the hidden datastream on the right.
  • Page 36 LAUNCH X-431 Diagun III English User’s Manual of your PC. All snapshot files named with year-month-date-hour-minute-secon (for example, 2012-06-19- 08-08-08.BMP) are saved in \ Storage Card \ gag \ snapshot. The time stands for the system time. Please set the correct system time to make sure the pictures are properly recorded in order.
  • Page 37: Update Of Diagnostic Software

    Follow the steps described as below to register a passport: 1. Firstly visit mycar.dbscar.com; 2. Click [Products] and then choose [X-431 Diagun III] from the product list; 3. Click [Register] to enter registration screen. Fill in registration information (items with * must be filled) and click [Confirm] to submit. The system will immediately feedback a CC number to you.
  • Page 38 LAUNCH X-431 Diagun III English User’s Manual 1. Software update of charge free will be provided by LAUNCH for one year. The free period is from the registration date on the website, not the purchase date. That is, during one year after the registration, users could download the corresponding software for free.
  • Page 39 LAUNCH X-431 Diagun III English User’s Manual drop-down menu. Click [Download], then click [Save] on the pop-up menu to save it in the folder “X-431 update”. Click [view] to learn the detailed information of the version. Users could download the other diagnostic program into the folder “X-431 update”.
  • Page 40: Software Update

    Connect card reader with TF card to PC and install drive program Necessary hardware: A computer that can access the internet. A TF card reader of X-431 Diagun III and a TF card to be updated. Necessary software: Tested model software and update tool (download from mycar.dbscar.com) Connection Fig.
  • Page 41 ", and install the X-431 Diagun III update tool according to the Wizard. After the installation, the update icon for the X-431 Diagun III will appear on the desktop. Double click the update icon for X-431 Diagun III on the desktop to actuate the update tool.
  • Page 42: Purchase Software

    LAUNCH X-431 Diagun III English User’s Manual downloaded update program. You can click the corresponding icon " " to the G disc to view the files stored in the TF card and delete some old software versions if necessary for more available space in TF card.
  • Page 43: Faq

    X-431 Diagun III English User’s Manual 5 FAQ In process of using X-431 Diagun III, you may come across some questions with respect to software, hardware, operations, and vehicle-related. Read the user’s manual carefully to get answers whenever you have any question, or contact our Customer Service Center (hotline: +86-0755-84528767) for help if you can not find solutions from the user’s manual.
  • Page 44: About Software

    LAUNCH X-431 Diagun III English User’s Manual Question: Why X-431 Diagun III fails in communication with ECU? Answer: Please check and make sure that the diagnostic connector and diagnostic program are matching the vehicle make. Question: Why the saved data disappeared? Answer: There are two possible causes: 1.
  • Page 45: Other Questions

    LAUNCH X-431 Diagun III English User’s Manual Answer: Usually, it’s the “suquela” for shared circuit. Please locate and analyze the most similar fault code and its circuit. 5.4 Other questions Question: When the updated software is used in vehicle diagnosis, some diagnostic program can not be downloaded successfully from the TF card.
  • Page 46 LAUNCH X-431 Diagun III English User’s Manual 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 (The warranty period for the battery is 6months)
  • Page 47 LAUNCH X-431 Diagun III English User’s Manual Customer Service If you have any questions on the operation of the unit, please contact us: Tel: +86-0755-84528767 E-mail: X431@cnlaunch.com If your unit requires repair service, return it to the manufacturer with a copy of the sales receipt and a note describing the problem.
  • Page 48 LAUNCH X-431 Diagun III English User’s Manual X431-Diagun III Serial No. Dealer code Notes: 1. ‘Product Serial No.’ label is attached by manufacturer before shipping. 2. Dealer should fill in the Dealer Code when selling the machine to customer and stamp on the code.
  • Page 49 www.obd2express.co.uk 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...

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