Overview
- 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


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
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
- 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
- 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
- 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
- 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
- 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

1pc x power cord with fuse
1pc x power cord
4pcs x clamps
4pcs x rubber protective cover
