LAUNCH TECH X-431 HTT User manual

X-431 HTT Professional Automotive Diagnosis Handset
i
Version: V1.00.001
Revised date: Oct-12-2017

X-431 HTT Professional Automotive Diagnosis Handset
ii
Copyright Information
Copyright © 2017 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. (LAUNCH) 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 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.

X-431 HTT Professional Automotive Diagnosis Handset
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Important Safety Precautions
Important: To avoid personal injury, property damage, or accidental damage to
the product, read all of the information in this section before using the product.
 Never collide, throw, or puncture X-431 HTT, and avoid falling, extruding and
bending it.
 Do not insert foreign objects into or place heavy objects on your device.
Sensitive components inside might cause damage.
 Do not use X-431 HTT in exceptionally cold or hot, dusty, damp or dry
environments.
 In places using X-431 HTT may cause interference or generate a potential
risk, please turn it off.
 X-431 HTT is a sealed unit. There are no end-user serviceable parts inside.
All internal repairs must be done by an authorized repair facility or qualified
technician. If there is any inquiry, please contact the dealer.
 Never place X-431 HTT into apparatus with strong electromagnetic field.
 Keep X-431 HTT far away from magnetic devices because its radiations can
damage the screen and erase the data stored on X-431 HTT.
 DANGER: Do not attempt to replace the internal rechargeable lithium battery.
Contact the dealer for factory replacement.
 CAUTION: Please use the included battery and charger. Risk of explosion if
the battery is replaced with an incorrect type.
Precautions on Using X-431 HTT
Before using this test equipment, please read the following safety information
carefully.
 Always perform automotive testing in a safe environment.
 Wear an ANSI-approved eye shield when testing or repairing vehicles.
 The vehicle shall be tested in a well-ventilated work area, as engines produce
various poisonous compounds (hydrocarbon, carbon monoxide, nitrogen
oxides, etc.)
 Do not connect or disconnect any test equipment while the ignition is on or
the engine is running.
 Put blocks in front of the drive wheels and never leave the vehicle unattended
while testing.

X-431 HTT Professional Automotive Diagnosis Handset
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 Keep the test equipment dry, clean, free from oil, water or grease. Use a mild
detergent on a clean cloth to clear the outside of the equipment as
necessary.
 Do not drive the vehicle and operate the test equipment at the same time.
Any distraction may cause an accident.
 Keep clothing, hair, hands, tools, test equipment, etc. away from all moving or
hot engine parts.
 Before starting the engine, put the gear lever in the Neutral position (for
manual transmission) or in the Park (for automatic transmission) position to
avoid injury.
 To avoid damaging the test equipment or generating false data, please make
sure the vehicle battery is fully charged and the connection to the vehicle
DLC (Data Link Connector) is clear and secure.
 Automotive batteries contain sulfuric acid that is harmful to skin. In operation,
direct contact with the automotive batteries should be avoided. Keep the
ignition sources away from the battery at all times.
Precautions on Operating Vehicle’s ECU
 Do not disconnect battery or any wiring cables in the vehicle when the ignition
switch is on, as this could avoid damage to the sensors or the ECU.
 Do not place any magnetic objects near the ECU. Disconnect the power
supply to the ECU before performing any welding operations on the vehicle.
 Use extreme caution when performing any operations near the ECU or
sensors. Ground yourself when you disassemble PROM, otherwise ECU and
sensors can be damaged by static electricity.
 When reconnecting the ECU harness connector, be sure it is attached firmly,
otherwise electronic elements, such as ICs inside the ECU, can be damaged.

X-431 HTT Professional Automotive Diagnosis Handset
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Table of Contents
1 INTRODUCTION ............................................................................................ 1
1.1 P
RODUCT
P
ROFILE
.................................................................................... 1
1.2 F
EATURES
................................................................................................ 1
1.3 K
NOWLEDGE OF
X-431 HTT ...................................................................... 2
1.4 T
ECHNICAL
P
ARAMETERS
.......................................................................... 5
1.5 P
ACKING
L
IST
(O
NLY FOR
P
ASSENGER
V
EHICLE
C
ONFIGURATION
) .............. 6
1.5 P
ACKING
L
IST
(O
NLY FOR
C
OMMERCIAL
V
EHICLE
C
ONFIGURATION
) ............ 6
1.5 P ACKING L IST (O NLY FOR G ASOLINE & D IESEL C ONFIGURATION ) ................ 7
2 PREPARATIONS ............................................................................................ 9
2.1 C HARGING X-431 HTT .............................................................................. 9
2.2 U
SING YOUR BATTERY
............................................................................... 9
2.3 P
OWER ON
/
OFF
......................................................................................... 9
2.3.1 Power on .......................................................................................... 9
2.3.2 Power off .......................................................................................... 9
2.4 T
IPS ON FINGER OPERATIONS
.................................................................. 10
2.5 S
CREEN LAYOUT
..................................................................................... 10
2.6 N
OTIFICATION PANEL
............................................................................... 11
2.7 A
DJUST BRIGHTNESS
............................................................................... 11
2.8 S
ET STANDBY TIME
.................................................................................. 11
2.9 C
HANGE LANGUAGE
................................................................................ 11
3 WI-FI SETTING ............................................................................................ 12
3.1 C
ONNECT TO A
W
I
-F
I NETWORK
............................................................... 12
3.2 D
ISCONNECT FROM A
W
I
-F
I NETWORK
...................................................... 12
4 INITIAL USE ................................................................................................. 13
4.1 R
EGISTER
& A
CTIVATE
X-431 HTT .......................................................... 13
4.2 J
OB
M
ENU
.............................................................................................. 16
4.3 P
REPARATION
......................................................................................... 18
4.4 C
ONNECTIONS
........................................................................................ 19
5 DIAGNOSIS .................................................................................................. 21
5.1 I
NTELLIGENT
D
IAGNOSIS
.......................................................................... 21

X-431 HTT Professional Automotive Diagnosis Handset
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5.2 L
OCAL
D
IAGNOSIS
................................................................................... 25
5.2.1 Health Report (Quick Test) ............................................................. 28
5.2.2 System Scan .................................................................................. 29
5.2.3 System Selection ........................................................................... 29
5.3 H
OW TO VIEW DIAGNOSTIC HISTORY
? ....................................................... 34
6 REMOTE DIAGNOSIS .................................................................................. 35
6.1 I
NTERFACE
L
AYOUT
................................................................................. 35
6.2 A
DD
F
RIENDS
.......................................................................................... 35
6.3 S
TART
I
NSTANT
M
ESSAGING
.................................................................... 37
6.4 L
AUNCH
R
EMOTE
D
IAGNOSIS
(D
EVICE
-T
O
-D
EVICE
) .................................. 38
6.5 L
AUNCH
R
EMOTE
D
IAGNOSIS
(D
EVICE
-T
O
-PC) ........................................ 42
7 SPECIAL FUNCTION (ONLY FOR PASSENGER VEHICLES/GASOLINE &
DIESEL CONFIGURATION) ............................................................................ 46
7.1 O
IL
R
ESET
S
ERVICE
................................................................................ 46
7.2 E
LECTRONIC
P
ARKING
B
RAKE
R
ESET
....................................................... 47
7.3 S
TEERING
A
NGLE
C
ALIBRATION
............................................................... 47
7.4 ABS B
LEEDING
....................................................................................... 47
7.5 T
IRE
P
RESSURE
M
ONITOR
S
YSTEM
R
ESET
............................................... 47
7.6 G
EAR
L
EARNING
..................................................................................... 48
7.7 IMMO S
ERVICE
....................................................................................... 48
7.8 I
NJECTOR
C
ODING
................................................................................... 49
7.9 B
ATTERY
M
AINTENANCE
S
YSTEM
R
ESET
.................................................. 49
7.10 D
IESEL
P
ARTICULATE
F
ILTER
(DPF) R
EGENERATION
.............................. 49
7.11 E
LECTRONIC
T
HROTTLE
P
OSITION
R
ESET
.............................................. 50
7.12 G
EARBOX
M
ATCHING
............................................................................ 50
7.13 AFS (A
DAPTIVE
F
RONT
-
LIGHTING
S
YSTEM
) R
ESET
................................. 50
7.14 S
UNROOF
I
NITIALIZATION
....................................................................... 50
7.15 S
USPENSION
C
ALIBRATION
.................................................................... 50
8 PERSONAL CENTER ................................................................................... 51
8.1 M
Y REPORT
............................................................................................ 51
8.2 M
Y DEVICE
.............................................................................................. 52
8.3 A
CTIVATE CONNECTOR
............................................................................ 52

X-431 HTT Professional Automotive Diagnosis Handset
vii
8.4 F
IRMWARE FIX
......................................................................................... 52
8.5 D
IAGNOSTIC FEEDBACK
........................................................................... 52
8.6 P
ROFILE
................................................................................................. 52
8.7 C
HANGE PASSWORD
............................................................................... 53
8.8 S
ETTINGS
............................................................................................... 53
8.8.1 Units of measurement .................................................................... 53
8.8.2 Print information ............................................................................. 53
8.8.3 Launch printer connection .............................................................. 53
8.8.4 About .............................................................................................. 55
8.9 E
XIT
....................................................................................................... 55
9 FAQ .............................................................................................................. 56

X-431 HTT Professional Automotive Diagnosis Handset
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1 Introduction
1.1 Product Profile
X-431 HTT is a new smart hand-held vehicle diagnostic tool. It has several
different product configurations: Passenger Vehicles, Commercial Vehicle and
Gasoline & Diesel Vehicles. It inherits from LAUNCH’s advanced diagnosing
technology and is characterized by covering a wide range of vehicles, featuring
powerful functions, and providing precise test result.
Through a simple connection between X-431 HTT and vehicle’s DLC via the
diagnostic cable, it achieves full car model and full system vehicle trouble
diagnosis, which include Reading DTCs, Clearing DTCs, Reading Data Stream,
Actuation Test and Special Functions.
X-431 HTT adopts a higher performance-price ratio tablet computer, which is
equipped with Android 7.0 operating system, 8-core CPU, rear-facing 13MP
camera and 5” display screen with a resolution of 1280*720 pixels.
1.2 Features
1. Diagnose:
 VINscan quick test and manual diagnosis are available. Diagnosis functions
include: Read DTCs, Clear DTCs, Read Data Stream, Special Functions etc.
 Remote diagnosis: This option aims to help repair shops or technicians
launch instant messaging and remote diagnosis, making the repair job getting
fixed faster.
 Special function: All kinds of maintenance and reset functions can be done.
 One-click Update: Lets you update your diagnostic software online.
 Diagnostic feedback: Enables you to submit the vehicle issue to us for
analysis and troubleshooting.
2. WLAN connection and Ethernet connection are supported.
3. Walkie-Talkie: Comes loaded as an optional module and varies with product
configuration. Multiple channels can be created for group chat and
user-to-user private chat.
4. NFC(Near Field Communication): This add-on module is currently disabled
and reserved for subsequent function extension.
5. Laser Scanner: This add-on module is currently disabled and reserved for

X-431 HTT Professional Automotive Diagnosis Handset
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subsequent function extension.
6. Web browser: Built-in Wi-Fi module enables you to make online search and
visit any website.
7. ES file explorer: Lets you manage files or downloaded files stored in memory
card efficiently.
8. Other Android-based applications can be customized to install or uninstall.
1.3 Knowledge of X-431 HTT
Fig. 1-1 Front & side views
No. Name Descriptions
1 Ambient light
sensor
2 Power indicator Red means Charging and Green mean Full
Charged.
3 DB15 connector For connecting the main cable.

X-431 HTT Professional Automotive Diagnosis Handset
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4 Screen For indicating the test result.
5 Power/Screen lock
key
In Off mode, press and hold it for 3 seconds
to turn the X-431 HTT handset on.
In On mode:
 Press it to activate the LCD if the LCD is
off.
 Press it to turn off the LCD if the LCD
lights up.
 Press and hold it for 3 seconds to turn it
off.
 Press and hold it for 10 seconds to
perform a forced shutdown.
6 Volume keys
To adjust the volume. Press and hold the
[POWER] and [VOLUME -] to capture the
screen.
7 Hand strap
8
Keypress To execute the command and input the
characters.
To return to the previous screen.
Press to start the diagnostic APK.
To confirm an action/operation.
 Delete one character before the cursor
with short press.
 Delete all characters in one line with
long press.
Quick access to the system setting.
 To navigate to Android’s Home screen
with short press.
 To open the application list manager
with long press.

X-431 HTT Professional Automotive Diagnosis Handset
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 To capture the current screen with short
press.
 To launch camera with long press.
To retrieve it in search engine.
9 Microphone
10 USB port
To connect the included power adaptor for
charging the handset or connect to the PC
for data transmission.
11 PTT(Push-To-Talk)
Key
It is only available on the X-431 HTT which
is equipped with this module. It is currently
disabled and reserved for future use.
Fig. 1-2 Rear view
No. Name Descriptions
12 Laser scanner It is used to quickly scan the VIN (Vehicle
Identification Number) of the tested vehicle.

X-431 HTT Professional Automotive Diagnosis Handset
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It is currently disabled and reserved for future
use.
13 Flashlight
14 Camera
To photograph the vehicle plate number to
identify the vehicle information or take
pictures.
15 Battery
16
NFC(Near Field
Communication)
module
As an optional module, it is currently disabled
and reserved for future use.
1.4 Technical Parameters
Operating System Android 7.0
CPU 8-core processor
ROM 16GB
RAM 2GB
Screen 5 inch capacitive touch screen with a resolution of
1280*720 pixels
Battery 4680mAh fast recharging supported
Camera Rear-facing 13 MP camera
Laser Supported (It is currently disabled and reserved for
future use.)
NFC
Communication
Supported (It is currently disabled and reserved for
future use.)
Wi-Fi 802.11a/b/g/n/
Rated Voltage 3.8V
Working Temp. -10℃ ~ 50℃
Storage Temp. -10℃ ~ 45℃

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1.5 Packing List
(Only for Passenger Vehicle Configuration)
For detailed accessory items, please consult from the local agency or check the
packing list supplied with X-431 HTT together.
No. Item Description Qt.
1 X-431 HTT handset
For analyzing the vehicle data and indicating
the test results. 1
2 Diagnostic cable To connect the X-431 HTT handset
and the
vehicle’s DLC. 1
3 OBD I adaptor To connect the main cable to non-16pin
adaptor cable. 1
4 Cigarette lighter
cable
Optional. To supply power to non-16pin
adaptor cable via vehicle’s cigarette lighter
receptacle.
1
5 Battery clamps
cable
Optional. To supply power to non-16pin
adaptor cable via vehicle’s battery. 1
6 Power adaptor To charge the handset. 1
7 Password envelope
A piece of paper bearing Product S/N and
Activation Code, which is needed for
product registration
1
8
Non-16pin adaptor
cable kit for
Passenger Vehicles
Optional. For connecting to Non-OBD II
vehicle DLC. 1
1.5 Packing List
(Only for Commercial Vehicle Configuration)
For detailed accessory items, please consult from the local agency or check the
packing list supplied with X-431 HTT together.
No. Item Description Qt.
1 X-431 HTT handset
For analyzing the vehicle data and indicating
the test results. 1

X-431 HTT Professional Automotive Diagnosis Handset
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2 Diagnostic cable To connect the X-431 HTT handset
and the
vehicle’s DLC. 1
3 Power adaptor To charge the handset. 1
4 Password envelope
A piece of paper bearing Product S/N and
Activation Code, which is needed for
product registration
1
5
Non-16pin adaptor
cable kit for
Commercial
Vehicles
Optional. For connecting to Non-OBD II
vehicle DLC. 1
1.5 Packing List
(Only for Gasoline & Diesel Configuration)
For detailed accessory items, please consult from the local agency or check the
packing list supplied with X-431 HTT together.
No. Item Description Qt.
1 X-431 HTT handset
For analyzing the vehicle data and indicating
the test results. 1
2 1.5m diagnostic
cable
To connect the X-431 HTT handset
and the
passenger vehicle’s DLC. 1
3 3m diagnostic cable
To connect the X-431 HTT handset
and the
commercial vehicle’s DLC. 1
4 OBD I adaptor To connect the main cable to non-16pin
adaptor cable. 1
5 Cigarette lighter
cable
Optional. To supply power to non-16pin
adaptor cable via vehicle’s cigarette lighter
receptacle.
1
6 Battery clamps
cable
Optional. To supply power to non-16pin
adaptor cable via vehicle’s battery. 1
7 Power adaptor To charge the handset. 1

X-431 HTT Professional Automotive Diagnosis Handset
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8 Password envelope
A piece of paper bearing Product S/N and
Activation Code, which is needed for
product registration
1
9
Non-16pin adaptor
cable kit for
Passenger &
Commercial
Vehicles
Optional. For connecting to Non-OBD II
vehicle DLC. 1

X-431 HTT Professional Automotive Diagnosis Handset
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2 Preparations
2.1 Charging X-431 HTT
There are two charging methods available for X-431 HTT:
Via Power adaptor:
1. Insert one end of the included USB cable into the power adaptor.
2. Connect the other end into the charging port of X-431 HTT.
3. Plug the adaptor into AC outlet.
Via Personal computer:
1. Insert one end of the included USB cable into the USB port of PC.
2. Connect the other end into the charging port of X-431 HTT.
If appears on the screen, it indicates it is being charged. If the logo changes
into , it indicates that the battery is fully charged. Unplug the power adaptor
from X-431 HTT.
2.2
Using your battery
 If the battery remains unused for a long period of time or the battery is
completely discharged, it is normal that the tool will not power on while being
charged. Please charge it for a period of 5 minutes and then turn it on.
 Please use the included power adaptor to charge your tool. No responsibility
can be assumed for any damage or loss caused as a result of using power
adaptors other than the one supplied.
 While X-431 HTT has low battery, a beep will sound. If it is very low, X-431
HTT will be switched off automatically.
2.3
Power on/off
2.3.1 Power on
Press [POWER] to turn the tool on.
Note: If it is the first time you have used this tool or the tool remains idle for a long
period of time, the tool could fail to turn on. Please charge the tool for a minimum of 5
minutes and attempt to turn on again.
2.3.2 Power off
Press [POWER] for 3 seconds, an option menu will pop up on the screen. Tap

X-431 HTT Professional Automotive Diagnosis Handset
10
“Power off” to turn the tool off.
To perform a forced shutdown, press [POWER] for about 10 seconds until the
screen goes dark.
2.4 Tips on finger operations
Single-tap: To select a item or launch a program.
Double-tap: To zoom in so that the text on a webpage appears in a
column that fits your device’s screen.
Long press: Tap and hold on the current interface or area until a
contextual menu pops up on the screen, and then release it.
Slide: To jump to different pages.
Drag: Tap the desktop icon and drop it to other location.
Spread apart/pinch together: To zoom in manually, place two
fingers on the screen and then spread them apart. To zoom out,
place two fingers apart on the screen and then pinch them together.
2.5 Screen layout
1. Preview the screen
Tap and hold any blank area on the home screen, a function menu will pop up at
the bottom of the screen. It mainly includes wallpapers, widgets and settings.
2. On-screen buttons
There are three on-screen buttons available on the bottom of the screen. If it is
hidden, swipe the screen from the bottom to call it out.
 Back: Tap to return to the previous screen.
 Home: Tap to jump to the Android’s home screen.
 Recent App: Tap to view the recently launched applications and running
applications. The following operations can be done:
 Tap the desired app to open it.

X-431 HTT Professional Automotive Diagnosis Handset
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 Swipe the desired app to the left or to the right to close it.
2.6 Notification panel
The notification bar is used to display some activities, such as new message, to
do list and running tasks. You can also open the notification bar to view the
reminder or activity notification.
2.7 Adjust brightness
Tips: Reducing the brightness of the screen is helpful to save the power of X-431 HTT.
1. On the home screen, tap Settings -> Display -> Brightness level.
2. Drag the slider to adjust it.
2.8 Set standby time
If no activities are made within the defined standby period, the screen will be
locked automatically and the system enters sleep mode to save power.
1. On the home screen, tap Settings -> Display -> Sleep.
2. Choose the desired sleep time.
2.9 Change language
X-431 HTT supports multiple languages. To change the language, please do the
following:
1. On the home screen, tap Settings -> Languages & input -> Languages.
Fig. 2-1
2. Tap “Add a language”, and then choose the desired language from the list.
3. Tap and hold the desired language and drag it to the top of the screen, the
system will change into the target language.

X-431 HTT Professional Automotive Diagnosis Handset
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3 Wi-Fi Setting
*Note: Once WLAN is set as ON, X-431 HTT will consume more power. While
WLAN keeps unused, please turn it off to conserve battery power.
X-431 HTT has built-in Wi-Fi that can be used to get online. Once you’re online,
you can register your X-431 HTT, update the diagnostic APK, browse the
Internet, get apps and send email on your network.
3.1 Connect to a Wi-Fi network
1. On the home screen, tap Settings -> WLAN.
2. Tap or slide the Wi-Fi switch to ON, X-431 HTT starts searching for all
available wireless LANs.
3. Choose the desired Wi-Fi access point / network,
 If the network you chose is open, you can connect directly.
 If the selected network is encrypted, you have to enter the right security
key (network password).
Once it is connected successfully, tap the Wi-Fi network from the list to view its
name, link speed, security type, IP address etc.
When this tool is in range, it will connect to the previously linked network
automatically.
3.2 Disconnect from a Wi-Fi network
1. On the home screen, tap Settings -> WLAN.
2. Tap the network with a Connected status, then tap “Disconnect”.