What is Diagsmart 3.1 — and what is it for?
The Diagsmart 3.1 Weichai Diagnostic Tool is the specialized diagnostic tool for heavy trucks with engines and electronic systems from the brands Weichai, Sinotruk (HOWO), Shacman, FAW, and Sitrak — the main Chinese truck manufacturers operating in the Brazilian market, especially in mining, construction, agribusiness, and cargo transportation fleets.
With software dedicated to the Weichai electronic ecosystem, technicians can read and clear fault codes, perform ECU calibration and reprogramming, monitor parameters in real-time, and execute interactive tests — functions that generic multi-brand scanners cannot perform in depth on the electronic systems of these trucks.
Connects to the vehicle via OBD and to the computer via USB. 12-month warranty. Technical support via TeamViewer available.
ECM Tech Center sells and offers technical support for Diagsmart 3.1. Please contact us before purchasing to confirm compatibility with your vehicle's model and year.
What you can do with Diagsmart 3.1
| Function |
Description |
| DTC Reading |
Identifies and interprets fault codes from all electronic systems |
| Fault Clearing |
Clears codes after repair |
| ECU Reprogramming |
Reconfigures engine control modules for replacement or adjustment |
| Parameter Calibration |
Adjusts critical engine parameters according to Weichai specifications |
| Real-time Monitoring |
Temperature, pressure, consumption, RPM, injection — live |
| Interactive Tests |
Activates components individually to check functionality |
Compatible Vehicles and Engines
| Brand |
Note |
| Sinotruk (HOWO) |
Sinotruk heavy trucks with Weichai systems |
| Weichai |
Weichai engines in different applications |
| Shacman |
Shacman trucks with Weichai electronics |
| FAW |
FAW models with compatible systems |
| Sitrak |
Sitrak trucks (Sinotruk-MAN joint venture in Brazil) |
Why Diagsmart 3.1 instead of a generic scanner?
Popular multi-brand scanners (such as Nexiq or Delphi) have limited coverage of the electronic systems in Chinese trucks — especially for ECU reprogramming and parameter calibration functions. Diagsmart 3.1 was developed specifically for the Weichai ecosystem, which ensures access to deep functions that a generic scanner cannot reach.
Technical Specifications
| Field |
Detail |
| Model |
Diagsmart 3.1 Weichai Diagnostic Tool |
| Code |
1005422179 |
| Software |
Diagsmart 3.1 (included) |
| Vehicle Connection |
OBD |
| Computer Connection |
USB |
| Operating System |
Windows 7, 8, or 10 |
| Warranty |
12 months |
| Remote Support |
TeamViewer available |
| Condition |
New |
Package Contents
- 1x Diagsmart 3.1 Weichai Diagnostic Tool Scanner
- USB cables for OBD connection
- Diagsmart 3.1 software and installation manual
Service and Support
Do you have questions about software installation, reading faults on your Sinotruk, or reprogramming a Weichai ECU? ECM Tech Center offers after-sales technical support, including remote support via TeamViewer.
📱 WhatsApp CE: +55 88 9704-1186
📱 WhatsApp MS: +55 67 9640-4607
Service hours: Monday to Friday, from 8 am to 6 pm.
