 
Does Easydiag 12V to 24V HD Adapter Work K-line and CAN BUS?
Easydiag + 24V to 12V adapter = HD Module for trucks?
The easydiag 12V to 24V HD adapter has been a while since it was released, it is advertised it would do HD modules’ job. There are two most frequently asked questions:
1.) It works both K-line and CAN Bus?
2.) Does it have the database for heavy duty trucks?
Answer and Suggestion:
1).
The 12V to 24V heavy duty adapter has no component for kline. Only usable for diagnosis via CAN.
It only converts 24-12V, no protocols, so only CAN will work.
On trucks with CAN line is not so bad.
On trucks with K-line (old) none working.
Using easydiag with USA 12v trucks obd2 no problem and don’t need a voltage converter, but when i try to use an obd2 to 9 pin adapter to read the older trucks (K-line) it will not connect.
2).
It does not have a database for heavy duty.
Only buy original launch x431 24v truck adapters with separate software.
You can use HD or HD III for X431 V+, Pro3 or Smart Box for Pad V, SmartLink for PAD VII (PAD V, PAD VII need to purchase truck software in “Mall”)
- 
Identification of control units
- 
Adaptation of control units
- 
Reset service intervals
- 
Reading vehicle data streams
- 
Display of current system parameters
- 
Check actuators
- 
Reading and erasing vehicle fault codes
- Component Replacement, Cylinder Compression Test, Injector Cut Out Test, DPF Regeneration
- Communicates with ABS & Transmissions from Bendix, Wabco and Allison
- Tech to Tech remote communication function
Supported heavy duty vehicle list:
Europe:
- 
MERCEDES BENZ
- 
MAN
- 
VOLVO
- 
SCANIA
- 
IVECO
- 
DAF
- 
RENAULT
U.S:
- 
Freightliner
- 
INTERNATIONAL
- 
Kenworth
- 
PETERBILT
- 
STERLING
- 
WESTERN STAR
- 
MACK
- 
DETROIT
- 
CUMMINS
Asia:
- 
HINO
- 
FUSO
- 
ISUZU
- 
UD
- 
HYUNDAI
So if you need to diagnose CAN BUS truck, the easydiag converter is worth a try. Trucks are very expensive, original Launch HD adapter is definitely the best solution.
