
GODIAG GT106 PLUS 24V to 12V Heavy Duty Truck Adapter Newly Added Fuel Injector Cleaning & Testing Relay Testing for Cars & Trucks
$24.99
Package: 14.2cm*10.2cm*4cm ( Inch: 5.59*4.02*1.57 )
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1. The GODIAG GT106 PLUS is designed for:
- Professional heavy-duty truck repair technicians, commercial vehicle service workshops
- Mechanics using 12V passenger car Bluetooth diagnostic tools (Launch, ThinkCar series) for 24V truck diagnosis
- Auto parts inspectors testing automotive relays and fuel injectors offline
- Mobile roadside repair specialists handling light trucks, pickups and diesel commercial vehicles
- Automotive electronics training instructors for relay and injector bench testing practice
- Repair shops that need to protect 12V diagnostic hardware from 24V truck voltage burnout
2. Supported Key Functions & Features
24V to 12V Diagnostic Voltage Conversion
The GT106 PLUS converts:
• 24V heavy truck diagnostic power
to
• 12V diagnostic equipment power
This helps protect 12V diagnostic devices from damage when working with 24V trucks.
24V K-Line to 12V K-Line Protocol Conversion
Supports:
• Heavy truck 24V K-Line communication
• 12V K-Line diagnostic equipment communication
Allows compatible diagnostic devices to communicate with heavy duty vehicles.
Input and Output Voltage Display
The built-in screen displays:
• Input voltage: 24V
• Output voltage: 12V
Users can easily monitor voltage conversion status.
Communication Protocol Indicator
Built-in indicator lights show communication activity.
Supports monitoring:
• K-Line communication
• Diagnostic communication status
Helps technicians determine whether the diagnostic device and vehicle are communicating correctly.
Relay Testing Function
Supports relay testing for:
• Passenger vehicles
• Heavy duty trucks
Useful for checking relay operation when vehicle components fail, such as:
• Headlights
• Turn signals
• Horns
• Engine starter systems
When the car's headlights, turn signals, horn and the engine starter do not work, if there is no problem with these components after detection, you can check the relay switch.
After the relay is removed from the car, connect the adapter based on the connection of the relay.



Fuel Injector Testing Function
Supports fuel injector testing for:
• Cars
• Heavy duty trucks
Helps check:
• Injector opening and closing operation
• Injector electrical performance
• Injector working condition
When the vehicle has difficulty in starting, acceleration and fuel consumption, etc, it is necessary to check the fuel injector.
When detecting the fuel injector, if the fuel injector is driven to open or close, the ammeter shows the normal value and the fuel injector woks normally, it means that the fuel injector is normal. Otherwise, it means that the fuel injector is damaged.
Note: Use a 24v 8A power supply to test the fuel injector of the truck and the time should not exceed 120s.
Note: Use a 24v 8A power supply to test the fuel injector of the truck and the time should not exceed 120s.

Fuel Injector Cleaning Function
Supports injector cleaning for:
• Passenger vehicles
• Heavy duty vehicles
Helps remove:
• Carbon deposits
• Fuel injector blockage
• Poor atomization problems
Note:
Fuel injector cleaning requires additional purchase of an extension cable and cleaning solution.
External Power Supply Function
Provides DC power output for:
• Diagnostic equipment
• Component testing
• Automotive maintenance applications
3. What Vehicles Does It Support?
The GODIAG GT106 PLUS is designed for vehicles equipped with 24V heavy duty electrical systems and supports a wide range of truck and diesel vehicle brands.
Supported Diagnostic Devices Include:
• LAUNCH EasyDiag
• LAUNCH EasyDiag 3.0
• Golo CarCare
• Golo Green Edition
• M-DIAG
• IDIAG
• iCarScan
• Diagun
• GOLO
• DBScar II
• ThinkDiag
• ThinkDiag Mini
• ThinkCar devices
• ThinkDriver OBD2 Bluetooth devices
Supported Vehicle Categories
Heavy Duty Trucks
• Trucks
• Buses
• Commercial vehicles
• Diesel vehicles
Supported Truck Brands and Systems Include:
European Brands
• DAF
• MAN
• Mercedes Benz HD
• Volvo HD
• Scania
• Renault HD
• Iveco
• PACCAR
• Freightliner
• Peterbilt
• Kenworth
• Mack
• Western Star
Asian Brands
• Hino
• Isuzu
• Mitsubishi Fuso
• Hyundai HD
• Toyota Diesel
• FAW
• DongFeng
• JAC
• Sinotruk
• Shacman
• Yutong
• King Long
• Weichai
• Yuchai
American Diesel Brands
• Caterpillar
• Cummins
• Detroit Diesel
• International
• Allison
• Bendix ABS
• WABCO ABS
Passenger Vehicle Diesel Systems
Supports some diesel passenger vehicles, including:
• Ford Diesel
• Fiat Diesel
• Volkswagen Diesel
• BMW Diesel
• Mercedes Diesel
• Peugeot Diesel
• Citroen Diesel
• Nissan Diesel
• Mitsubishi Diesel
Supported Vehicle Systems
• Engine System
• ABS System
• Transmission System
• Diesel ECU System
• SCR System
• Fuel System
• Other diagnostic systems supported by connected tools
4. Please Note the Following Limitations
- Only supports vehicles with 24V K-Line communication; incompatible with pure CAN-only heavy trucks without K-Line circuit
- Cannot perform full ECU read/write, coding or programming independently; must cooperate with external diagnostic scanners
- Fuel injector cleaning extension hose and cleaning agent are not included in the standard package and need separate purchase
- Truck injector testing requires an extra 24V 8A power adapter, which is not supplied together
- Not applicable for motorcycles, construction machinery, agricultural tractors, ships and other non-road equipment
- Cannot convert CAN bus voltage signals, only supports K-Line protocol conversion
- Continuous truck injector bench testing cannot exceed 120 seconds to avoid burning the test circuit
- Does not support high-voltage new energy vehicle power system diagnosis
5. Hardware Accessories & Licensing Requirements
- This is passive conversion hardware without built-in chips, no activation code, annual subscription or paid license required
- Mandatory matched diagnostic devices (sold separately): Launch EasyDiag series, ThinkDiag, Golo, DBScar II, M-DIAG, IDIAG and other 12V Bluetooth OBD scanners
- Mandatory separate power supply for truck injector testing: 24V 8A external power adapter
- Optional extra consumables: Injector cleaning extension cord, pressurized injector cleaner
- All test alligator clips, power cables and protective sleeves are pre-equipped in the official package, no extra basic adapters needed
6. Software Version & Supported Operating Systems
- GT106 PLUS is pure analog hardware with no embedded firmware, independent operating system or built-in APP
- Relies entirely on the matched third-party diagnostic scanner’s original software
- Supported PC Systems for paired scanners: Windows 7 / Windows 10 / Windows 11 (32bit & 64bit); Mac OS and Linux are not compatible
- No dedicated PC program for this adapter; all vehicle diagnosis operations are completed on the scanner tablet/phone
7. Software Update
- No onboard firmware inside GT106 PLUS, zero update demand, no update fee and no free update expiration date
- All truck model compatibility expansions depend on the official software updates of your matched Launch/ThinkCar diagnostic tool
- Using this adapter will not generate additional update charges, follow the original update policy of your scanner
8. Global Version
100% global universal version without regional lock, IP restriction or country function shielding. All global 24V truck K-Line communication protocols are pre-supported, usable for commercial vehicles from Europe, America, Asia without regional function blockage; multi-region power compatibility.
9. Warranty
- Standard manufacturer hardware warranty period: 12 months from original purchase date
- Warranty coverage: Factory defects of internal conversion circuit, digital display, communication indicator light and original power cables under normal dry workshop operation
- Excluded from free warranty: Damage caused by reverse voltage connection, long-time over-load test, liquid corrosion, artificial disassembly, broken alligator clips and cable wear
- 30-day return service available; buyer bears return shipping cost for non-quality problems; lifetime text & email technical support
10.Product Comparison:

11. Package List
1pc x GODIAG GT106 PLUS 24V to 12V Heavy Duty Truck Adapter
1pc x power cord with fuse
1pc x power cord
4pcs x clamps
4pcs x rubber protective cover
1pc x power cord with fuse
1pc x power cord
4pcs x clamps
4pcs x rubber protective cover
Reviews coming soon.
