GODIAG GT106 Plus 24V to 12V Adapter for Heavy Duty Trucks, Fuel Injector Testing and Relay Service Tool for Cars & Trucks

1. Complete Package for Professional Use Includes GT106 PLUS adapter, power cord with fuse, power cord, 4 clamps, and 4 rubber protective covers. Compatible with a wide range of heavy duty vehicles for professional diagnostics and maintenance

Designed for heavy duty truck diagnostics. It allows standard 12V diagnostic tools to work safely with 24V heavy trucks, light trucks, and pickups. In addition to voltage conversion, this adapter supports fuel injector testing and relay testing for both cars and heavy duty vehicles.

24V to 12V Voltage Conversion

Convert the 24V diagnostic interface of heavy trucks to 12V, enabling compatibility with popular diagnostic tools. The built-in screen displays input voltage (24V) and output voltage (12V) with a manual pop-up switch for easy operation.

K-Line Protocol Conversion

Convert 24V truck K-Line communication protocol to 12V K-Line, allowing diagnostic tools to communicate safely with heavy duty vehicles. The communication indicator light shows active data transfer status.

Fuel Injector Testing and Service

Check fuel injector operation when the vehicle has difficulty starting, slow acceleration, or high fuel consumption. The injector service function helps technicians diagnose injector performance (additional extension cord required separately).

Relay Testing

Test relays for headlights, turn signals, horn, and engine starter. Remove the relay from the vehicle and connect it to the adapter for quick and reliable testing.

Compatible With

Diagnostic tools designed for use with X431 EasyDiag 3.0, EasyDiag 2.0, ThinkCar, ThinkDiag, Golo series, and LAUNCH series.

Professional Application

Suitable for professional technicians, repair shops, and DIY users working with heavy duty trucks, light trucks, pickups, and passenger cars.

1. When to Check Your Fuel Injector:

- Hard to start

- Poor acceleration

- Increased fuel consumption

1. How to Test:

Drive the injector to open and close.

Normal ammeter reading + normal operation = Injector is GOOD

Otherwise = Injector is DAMAGED

1. TIPS: Use 12V 3A power supply for car injectors.

1. Test: Open/close injector normal reading + normal work = good.
2. Cleaning (if clogged): poor injection, carbon deposits, sticky residue. Use cleaner pressurized can (nozzle Ø 4mm). Hold tool firmly.
3. Safety: Avoid skin/eye contact. No open flames. Work in open area.
4. Use 24V 8A only. Test time 120s. Requires extension cord + cleaning agent.

1. Same test method as truck relay. Suitable for most car relays (headlights, horn, starter, etc.)

1. Normal operation = Relay is GOOD
2. No response or abnormal = Relay is DAMAGED

1. TIPS: Use 12V 3A power supply for car relays.

1. When to Check Your Relay: - Headlights, turn signals or horn not working - Engine starter does not respond - If components themselves are fine check the relay switch
2. How to Test: Remove relay from vehicle, then connect adapter according to relay connection.
3. TIPS: Use 24V 8A power supply for truck relays.