GODIAG GT100 PLUS is a testing platform for OBDII protocol communication detection and ECU maintenance / diagnosis / programming / coding. GT100 PLUS has a voltage and current display which is convenient for maintenance engineers to judge the current working status of ECU.
GODIAG GT100 PLUS can convert the car OBD2 interface into 16 pin for signal detection. It can be connected to the single modules or multiple modules of the vehicle. It can also be connected with any diagnostic tool to tell whether the car communication is good or not.
GODIAG GT100 PLUS supports the 24v to 12v voltage conversion, DOIP-ENET communication and GPT to read and write ECU data.
GODIAG GT100 PLUS can also supply power to the car when you change the battery to avoid the vehicle control module data being lost, automatically locked, the key remote control fails and the fault light turns on.
The product uses CANH and CANL shielded twisted cables, which can resist electromagnetic interference and make communication more stable.
Godiag GT100 Plus vs GT100+ vs GT100
| Model | Godiag GT100 Plus GPT
|
Godiag GT100+
|
Godiag GT100
|
| 24v-12v voltage conversion | √ | × | × |
| DOIP ENET Diagnostics | √ | × | × |
| GPT connection method to read and write ECU | √ | × | × |
| Connect SK420 SK421 airbag 100K CANBUS communication | √ | × | × |
| Voltage and current value display function | √ | √ | × |
| Pin 1, 9, 3, 11 12, 13, 8 Display CANBUS communication. | √ | √ | × |
| Pin 1, 9, 3, 11 12, 13, 8 Display K-Line Pwm Vpw+ KWP 2000 protocol communication. | √ | √ | √ |
| PIN2. 10 VPW PIN6.14 CANBUS PIN 7.15 k-line | √ | √ | √ |
| Check whether tools can send communication signals. | √ | √ | √ |
| Program key for VW, Porsche, Mitsubishi etc with all keys lost | √ | √ | √ |
| Communicate with a single ECU on bench | √ | √ | √ |
| Replace the auxiliary power supply for the battery | √ | √ | √ |
| Convert the OBD1 port of special truck to the standard OBD2 | √ | √ | √ |
| Test whether the programmed key works with CAS4 | √ | √ | √ |
| Work with BMW FEM/BDC Programming Test Platform | √ | √ | √ |
GODIAG GT100 PLUS Main Functions:
1. OBD-II Communication Testing
- Functions as an OBD-II breakout box allowing you to safely test and verify communication between any diagnostic/programming tool and the vehicle’s OBD-II port. LED indicators blink or light to show the active communication protocols.
- Real-time voltage monitoring of the OBD-II interface is displayed. If the voltage drops under ~11 V, it warns you to halt diagnosis or programming to avoid data loss, ECU lockout, or malfunction.
2. Extended Protocol Support
- Supports not only standard protocols like K-Line, PWM, VPW+, and KWP2000 but also CANBUS, covering a wider range of modern ECU communications
- The banana plug interface (pins 1, 3, 8, 9, 11, 12, 13) shows which protocol is active via the indicator lights.
3. Real-Time Voltage & Current Display
Unlike its predecessor, the GT100, the GT100 PLUS provides live voltage and current readings from the ECU or OBD-II interface. This is invaluable for diagnosing wiring issues, identifying a potentially faulty ECU, or preventing damage before proceeding with programming.
4. ECU Bench Connection
- Enables bench testing of single or multiple ECU modules using banana connectors or a DB25 jumper cable.
- This allows safe programming or diagnosis outside of the vehicle, reducing risk to onboard systems.
5. Power Supply During Battery Replacement
Acts as an auxiliary power supply during battery changes to maintain power to vehicle systems, preventing loss of anti-theft data, remote programming issues, or control module resets.
6. All-Keys-Lost & Immobilizer Activation
Supports “All Keys Lost” scenarios by allowing activation of the instrument cluster or immobilizer through specific pin shorting:
- VW (4th/5th-gen), Porsche: PIN 16 → PIN 1
- Toyota ECU: PIN 13 → PIN 4
- Mitsubishi: PIN 1 → PIN 4
- Porsche Cayenne: PIN 3 → PIN 7
This bypass is typically employed to power up the dashboard or immobilizer for key programming when all keys are lost.
7. OBD-1 to OBD-II Conversion & Extension
- Converts various non-standard or legacy OBD-I ports (including specialized truck ports) into standard OBD-II outputs using included banana plug + DB25 cable adapters.Provides a 1.4 m
- extended OBD-II cable—great for tight engine bay access or awkward diagnostic port locations.
8. BMW CAS4/CAS4+ & FEM/BDC Programming Support
When paired with the GODIAG CAS4/CAS4+ test platform, the GT100 PLUS can:
- Simulate the ignition/dashboard, allowing key synchronization and immobilizer testing before module reinstallation.
- Test programmed keys against CAS4 or CAS4+ modules for matching or troubleshooting purposes.
There’s also compatibility with BMW FEM/BDC programming platforms, facilitating key and module verification workflows.
2025 GODIAG GT100 PLUS GPT ENET DOIP 24V-12V AUTO TOOLS OBD II Break Out Box ECU Connector:
https://www.godiagshop.com/wholesale/godiag-gt100-plus-gpt-enet-auto-tools-obd-ii-break-out-box-ecu-connector.html