LAUNCH X431

 This article will introduce how to use the LAUNCH X431 V+ SmartLink HD to test the Compressed Air Valve on a 2024 Sinotruk Wangpai 737. The vehicle is equipped with an Aikelan aftertreatment system. Tools supporting this function: X431 PRO series, X431 PRO3 series, X431 PRO5 , and X431 PAD series , need X431 truck authorized licenses . Currently using X431 V+ SmartLink HD . Operation Procedure: 1) Connect the X431 device to the truck’s OBD port. On the X431 APP, select [Diagnose] -> [Aftertreatment] -> [Aikelan] . It is recommended to use software version V11.80 or above. 2) Tap [ActBlue Aftertreatment System] -> [Aikelan(VI)] . Confirm the vehicle information and tap [OK] . 3) Tap [Actuation Test] -> [Compressed Air Valve] . 4) On the Compressed Air Valve function page, tap [Open] . After the operation is completed successfully, the "Value" field for the Compressed Air Valve will show "Open" . 5) Tap [Close] . After the op...

 Replacing the BSM (Blind Spot Monitoring) or ORC (Occupant Restraint Controller) on an FCA Group vehicle requires performing Longitudinal and Lateral Sensor Calibration to write the new values to the vehicle module. This article will introduce how to perform Longitudinal and Lateral Sensor Calibration on a 2021 FIAT 500X using the LAUNCH X431 PRO3 V+ ELITE . Function Description: This program is performed when the BSM or ORC is replaced or the ORC undergoes rework. NOTE: Performing diagnostic functions on FIAT vehicles manufactured after 2018 requires unlocking the security gateway, which necessitates purchasing an FCA SGW license. See below for instructions on purchasing an FCA SGW license: http://blog.x431shop.eu/launch-x431-fca-sgw-activation-guide-2025-update/ Tested Model : 2021 — Fiat — 500X. Supported equipment: LAUNCH X431 PRO3 series, X431 PRO5 , and X431 PAD series , the current one for Demo is X431 PRO3 V+ ELITE . Operation Procedure: 1) Connect the X4...

  Question : I have an XPROG3 + PC Adaptor and can use the LAUNCH X431 ECU programming software on a PC. I noticed that the XPROG5 (G5) PC programming software has a new "Chip" function . Will this function also be added to the XPROG3 PC software so that XPROG3 can use the "Chip" function? Answer : The "Chip" function in the LAUNCH X431 ECU programming software is currently only available for XPROG5 . As a unique feature of XPROG5, it will not be added to XPROG3 in the short term. NOTE : If existing XPROG3 users find the "Chip" function missing after purchasing an XPROG5, it is recommended to download the latest software from the official website. The version number should be V10.70 or higher.

 For engine running issues related to cylinder performance, the Cylinder Cutout Test helps check how each cylinder responds during operation. On the 2020 Foton Aumark , this function can be accessed through the Engine System using Launch X431 PAD5 HD , and the same procedure is also available with Launch X-431 PAD7 HD . Vehicle Connection and System Access Select Diagnose and enter: Foton → Latest Version → Vehicle Type → Conventional Energy → Light Truck Series → Aumark . Run Auto Scan , then enter: ECM/ABS/SCR Scan → All System → Engine System . Confirm the vehicle information to access the engine test functions. Run Cylinder Cutout Test Go to: Actuation Test → Cylinder Cutout Test . Select the data display mode: Choose YES to enter the Graphical Data Interface . Choose NO to enter the List Data Interface . Perform the test according to the vehicle requirements. Click Continue to proceed with the test. Test Result Check Click OFF and observe the veh...

  Problem: I have a LAUNCH X431 PRO3S+ Smartlink HD with an active software subscription. When I download and update the software, a message appears saying, "Insufficient storage space. Try again after cleaning." However, I checked the device and found that there is still plenty of available storage space. How can I continue updating the software? Solution: Open "ES File Explorer" on the X431 tool . If this app is not installed, you can download and install it yourself. X431 tools use the Android operating system, so additional apps can be installed. Tap "Internal Storage" and delete the "cnlaunch" folder. Then reopen the X-431 APP and try updating the software again. If the above method does not work, try going to "Settings" and performing a factory reset.

  LAUNCH X431 truck diagnostic tools can perform active tests on light-duty and heavy-duty trucks. For example, we can use "Engine State Monitor" to check the engine status when the accelerator pedal is pressed and released, making it easier to troubleshoot faults. In this article, we will use the LAUNCH X431 PAD V ELITE with the truck diagnostic kit to perform an "Engine State Monitor" test on a 2020 Foton Aumark . Operating Procedure: 1) Connect the X431 PAD to the vehicle’s OBD port and operate it on the X-431 APP. Click [Diagnose] -> [Foton] . Foton diagnostic software version V15.20 or higher is recommended. 2) After manually selecting the vehicle model, enter the vehicle system. In this example, we first manually select the vehicle model: Click [Select Vehicle Type] -> [Conventional Energy] -> [Light Truck Series] -> [Aumark] . Then enter the vehicle system: Click [Auto Scan] -> [ECM/ABS/SCR Scan] -> [All System...

  Problem: I purchased a new LAUNCH XPROG5 (G5) , but it cannot be used with the LAUNCH X431 PAD7 as an adapter; however, it connects normally when used as an ECU programmer via USB connected to my computer. I also have an older Xprog3 (G3) , which connects normally to the X431 PAD7 , indicating that the PAD7 itself is not faulty. Is the problem with the XPROG5 device? Solution: The XPROG5 is a new adapter released in 2026. If the X431 diagnostic software version is too low, it cannot be recognized. It is recommended to upgrade the X431 diagnostic software to the latest version and then connect the XPROG5 for diagnostics. If you cannot update, it is recommended to uninstall the current application and then download the new software via the "APP Init" program on your desktop. (The correct software version should be V8.0 or higher.) www.x431shop.eu