Please kindly note that you should enter menu "Diesel OBD" if you want to diagnose heavy duty trucks.
Different connector will be applied in different protocol:
OBD-16 pin connector supports J1708/J1587 or J1939 protocol.
DIESEL-9 pin connector supports J1708/J1587 protocol and J1939 protocol.
DIESEL-6 pin connector supports only J1708/J1587 protocol.
CAT-9 pin connector supports J1708/J1587 or J1939 protocol.
(New diesel green 9 pin is not included in the package)
For Cars (12V): (Please enter the menu “OBD-II” if you’re going to diagnostic 12V cars.)
Supports SAE J1850PWM, SAE J1850 VPW, IS0 14230-4, IS0 9141-2,IS0 15765-4, SAE J1708, SAE J1939, OBDII
Support standard OBDII protocol cars, like following cars.
Car (Domestic): Buick, Cadillac, Chevrolet, Chrysler, Dodge, Ford, GM, GMC, Lincoln, Jaguar, Jeep, Pontiac, Saturn
Car (Europe): Audi, Bentley, BMW, Fiat, Jaguar, Land Rover, Mercedes Benz, Mini, Porsche, SAAB, Smart, Sprinter, Volvo, VW
Car (Asia): Acura, Daewood, Honda, Hyundai, Infiniti, Isuzu, Kia, Lexus, Mazda, Mitshubishi, Nissan, Scion, Subaru, Suzuki, Toyota;
Pickup (or Van): Silverado, Corolado, Ford (F150-750), Ford E-series, Dodge RM 1500-5500, GMC, Nissan Frontier, Toyota.

One-click Activate: This function allows for one-touch activating the scanner tool and you can quickly get started your first truck diagnostic, registration information is optional to fill in. There are no complex settings making it a user-friendly auto scanner.
One-click Screenshot: To save important information about vehicle diagnosis, you can take one click screen capture, and view the screenshots in “Data Management”.
One-click Feedback: This diagnostic tool supports one-click feedback. You can give us your feedback via this function if you have diagnostic problems, ANCEL professional technical team will provide you with excellent solutions.
One-click WIFI Update: No need to update on computer. By connecting wifi, it will automatically search for the latest update programe, just click update, you will get the latest version (more car models, bug fix) of this scanner. You will enjoy lifetime update through one-key function.