What Are The Active Tests and Special Features of Autel Scanners?

The OBD2 (On-Board Diagnostics II) scanner is a device used to diagnose car faults. It can read the vehicle's diagnostic information by connecting to the vehicle's OBD2 interface. Active testing and special functions are two important features that OBD2 scanners have during the diagnostic process.

What is active testing?

Active Test means that the OBD2 scanner can send commands to the vehicle, and the scanner outputs signals to the vehicle control unit to control the actuator for testing. This includes a series of self-checks and test operations.

Through active testing, users can activate and control various components and systems on the vehicle, such as the engine, transmission, braking system, air conditioning system, etc. This enables users to proactively detect and verify whether various functions of the vehicle are working properly during the diagnostic process, helping to quickly locate faults.

Active testing is also known as bi-directional control of the scanner.

What are special features?

Special Function means that the OBD2 scanner has certain special diagnostic and repair functions, such as resetting service lights, programming new car keys, adjusting parameters of the electronic control unit (ECU), etc. These special functions usually require advanced scanners or specific brands of diagnostic equipment, which can help technicians perform deeper vehicle repair and maintenance operations.

Special functions generally refer to the initial adaptation, self-learning or some automatic detection functions performed by the vehicle after repairing or resetting or replacing certain related components in the electronic control system, including many procedures, such as crankshaft position sensor learning, resetting the service light , programming new car keys, adjusting parameters of the electronic control unit (ECU), etc.

Special functions usually require advanced scanners or specific brands of diagnostic equipment to help technicians perform deeper vehicle repair and maintenance operations.

How to perform active testing functions?

After the adapter/main OBD2 cable of the Autel scanner is connected to the car's OBD-II interface and communication occurs, the vehicle can be read through automatic detection, manual input or manual selection.

The Autel scanner will select automatic scanning or control unit - (powertrain/body/chassis) - related modules - active testing.

How to implement special functions?

After the scanner communicates with the vehicle, it reads the vehicle through automatic detection or manual input or manual selection.

The Autel scanner will select automatic scanning or control unit ---- (powertrain/body/chassis) ---- (related modules) ---- special functions.

Autel scanners have a simple and clear user interface that explains every step the user takes.

What active testing and special features for vehicles do Autel scanner devices support?

Active testing and special features are not available on all vehicles, please send your car's year, make, and VIN for us to check suitability.

Summarize

Active testing and special functions are very important features of OBD2 scanners when diagnosing cars. Active testing can help users proactively detect the working status of various vehicle components, while special functions provide technicians with more diagnostic and repair options, helping to improve the accuracy and efficiency of fault diagnosis.