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How To Use LAUNCH X431 HD Diagnostic Adapter

Here is a user manual for new arrived LAUNCH X431 HD Module Heavy Duty Truck Diagnostic Adapter


Incl four parts:

Part 1:Knowledge of X-431 HD Module

Part 2:How to connect OBD II vehicle

Part 3:How to connect non-OBD II vehicle

Part 4: Download and Install X-431 HD Module App

Part 5:Activate X-431 HD Module

User manual download:LAUNCH X431 HD Module Adapter user manual

Part 1:Knowledge of X-431 HD Module

X-431 Heavy-duty Truck Module is a new generation heavy-duty truck fault diagnostic tool developed by Launch Tech regarding internet application on the basis of Android OS. It communicates with X-431 PRO3/X-431PAD II through Bluetooth to achieve fault diagnosis for various car models and full systems. Advantages include wide car model coverage, powerful test function, more special functions and accurate test data, etc.

1. Applicable to diesel vehicle of 12V & 24V voltage; no need for battery conversion when testing 24V trucks;
2. Supports a wide range of vehicle models covering Asian, American and European etc;
3. Powerful testing function enables you to diagnose all electronic control system;
4. International design to adapt to all diagnostic sockets.

Ports and Indicators of X-431 HD Module


how-to-use-launch-x431-hd-1 how-to-use-launch-x431-hd-2 how-to-use-launch-x431-hd-3

Technical Parameters
* Working voltage: 8~24V
* Working temperature: -15℃ ~ 60℃
* Storage temperature: -20℃ ~ 70℃
* Relative humidity: 10% ~ 80%
* Dimension: 110 mm * 178 mm * 50 mm

Part 2:How to connect OBD II vehicle

Follow the steps described below to proceed:
1. Locate vehicle’s DLC socket. The DLC is usually located 12 inches from the center of the instrument panel
(dash), under or around the driver’s side for most vehicles. If Data Link Connector is not located under
dashboard, a label should be there telling location. If the DLC cannot be found, refer to the vehicle’s
service manual for the location


2. Connect one end of the main cable to the diagnostic socket, and then connect other end to the vehicle’s
DLC (For non-16 pin DLC, you need to choose the corresponding diagnostic connector).


Part 3:How to connect non-OBD II vehicle

Choose one of the following to connect non-OBD II vehicle:
1. Via Cigarette Lighter


2. Via Battery Clamps Cable


Part 4: Download and Install X-431 HD Module App

1. Visit the LAUNCH website and download the application corresponding to X-431 HD module; Note: If downloading using the diagnostic tool please make sure Wi-Fi has good or strong signals. 2. Follow the on-screen instructions to install it. Once installation is complete, an application icon will appear on the HOME screen.

Part 5:Activate X-431 HD Module

After purchasing X-431 HD module, you have to activate it before use. Follow the steps below to proceed:

1、 Launch the application, and tap to enter;

2、 Tap “Profile” from the pull-down menu, and then taphow-to-use-launch-x431-hd-8 “Connector Activation”;

3、 Input the Serial Number and Verification Code, which can be found in the included password envelope. Tap “Activate”.



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