GODIAG GT100 Auto Tools OBD II Break Out Box ECU Connector work with Autel MaxiIM IM608/ MaxiSys Elite Free Shipping

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Product Description

GODIAG GT100 Auto Tools OBD II Break Out Box ECU Connector can work with Autel MaxiIM IM608 and Autel MaxiSys Elite, etc
Godiag GT100 Description:

GT100 is a latest testing platform for OBDII protocol communication detection and ECU maintenance / diagnosis / programming / coding.
It can convert the car OBD2 interface into 16 pin for signal detection and electrical level  conversion. Able to connect the single modules or multiple
modules of the vehicle. It can be connected with any diagnostic tool to tell whether the car communication is good or not. It 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.

GT100 ECU Connector description

GT100 Function and Operation Guide:

- By connecting the vehicle and diagnostic tool via OBDII, GT100's LED will indicate whether the OBDII diagnostic interface has a good communication with the car.
- Monitor the voltage of vehicle OBDII interface and display it in real time. If it is less than 11V, please stop the diagnosis and programming to avoid the vehicle being unable to start/data loss/module locked.
GT100 ECU Connector description
Indicator Meaning:

1. Manufacturer custom
2. SJE1850 wire
3. Manufacturer custom
4. Power grounding
5. Signal grounding
6. SAEJ2284《CAN》high
7. ISO9141-2&iso, DIS4230-4K wire
8. Manufacturer custom 9. Manufacturer custom
10. SJE1850 wire《bus->
11. Manufacturer custom
12. Manufacturer custom
13. Manufacturer custom
14. SAEJ2284《CAN》low
15. ISO9141-2 & ISO/DIS 4230-4L wire
16. Car battery positive

1. OBDII Protocol Detector & communication detection

1). Connect GT100 to the OBDII diagnostic port of the car.
2). When the device displays the voltage, turn on the power switch of GT100.
3). Then connect to the diagnostic tool, when the tool is communicating with the car, the LED indicator of corresponding protocol will light up or flash. ( If the CAN protocol is detected, it will have the maximum brightness. When the communication is successful, the corresponding CAN-H and CAN-L will dim or twinkling weakly)  

2. ECU connection: single module connection
GT100, connected to a single ECU module, is convenient for a user to do the single-module diagnosis and programming.
1). Connect the ECU with the color jumpers. (If the ECU is CAN protocol, please check whether you will need to connect a 120 ohm resistor.)
2). The GT100 can be powered by connecting to the OBDII diagnostic interface of car, or by an AC power adapter.
3). To diagnose and program for a single ECU by connecting the diagnostic tool or ECU programmer.
3. Banana plug extension connection:
Extend the car's OBDII 16pin interface to tell you whether the OBDII interface connection is good or not, which is convenient for the test of OBDII interface voltage waveform.
GT100 ECU Connector description
4. Convert OBD1 diagnostic interface to the standard OBD2

Use the connector to convert the OBD1 interface into obd2 interface according to the diagnostic interface communication protocol.
GT100 ECU Connector description
5. Connect multiple ECU control modules at the same time, which is convenient for the professional engineers to detect and maintain.

6. When to use the extension cables: The space of the diagnostic interface location is too narrow to connect to the diagnostic tool, or the user find that the diagnostic cable is not long enough during maintenance. It can be extended by 1.2 meters.

7. Able to power the car when replacing the used battery.
GT100 ECU Connector description
1). Prepare battery A to supply power by connecting to No. 16 / 4 / 5 holes of GT100 & to the OBD2 diagnostic interface of the car.
[Notice 1. Turn on the power switch of GT100. 2. Don't turn on the ignition switch, don't start the car]
2). Then replace the brand-new battery B with the used battery in the car, which will ensure that the car has fully power to prevent data loss and audio lock-up or the malfunction due to lack of power to the ECU control module.
8. The dedicated adapter will be released (help GT100 connect to the special ECU module)

Hardware Connection Diagram:
GT100 ECU Connector description
GT100 Specification:

Item Specification
Diagnostic port: OBDII
Working voltage: DC 9V-24V
Work and power: 0.5-0.6W
Adapter power: Input AC100v-240v, Output DC12V 1A
Operating temperature range: -20 to 70 °C ( -4 to 158 °F )
Storage temperature range: -40 to 85 °C ( -40 to 185 °F )
Dimension: L: 23cm, W:18cm, H:7cm

GT100 Package list: 

1pc x Host
1pc xOBD 2-in-1 extension cable
1pc xColored jumper cable
1pc xPower supply 12V
1pc xResistance 120 ohm
6pcs xBanana plug
24pcs xWire accessories, Dupont 2.54mm connector female pins
Guarantee: One year warranty.

Contact Us:
E-mail: Sales@AutelDiag.com
Skype: Auteldiag.com
WhatsApp: +86-13372689373

Tech Service

Today I wanna make an ECU test tutorial: using an OBD2 break-out box GODIAG GT100, a code reader Autel MD808 Pro, and a test platform to connect to a CAS4 ECU box. GODIAG GT100 is a latest auto tool connector for OBD2 protocol communication detection and ECU diagnosis.


Now let’s go to start:

Plug the power wire of GT100, and turn on its power switch.

GODIAG GT100 + Autel MD808 Pro Test CAS4 ECU


Connect GT100 to Autel MD808 Pro code reader.

GODIAG GT100 + Autel MD808 Pro Test CAS4 ECU


Use the adapter to connect CAS4 ECU box, other end connect to GT100.

GODIAG GT100 + Autel MD808 Pro Test CAS4 ECU


GODIAG GT100 + Autel MD808 Pro Test CAS4 ECU

Press “12V(30)” button on GT100 to turn on CAS4 ECU power supply.

GODIAG GT100 + Autel MD808 Pro Test CAS4 ECU


Look, the CAN light is flashing, it means the protocol communication between devices is normal. Now I can start to read the CAS4 ECU data.

GODIAG GT100 + Autel MD808 Pro Test CAS4 ECU


Operation on Autel MD808 Pro:

Press “scan”>> European >> BMW >> Turn off ignition, wait about 10 seconds, then switch on ignition again.


4 Series >> F32/F33 >> Control Units >> Drive >> CAS Car Access System >> ECU Information.


Turn on the switch of test platform to read out the ECU information on Autel MD808 Pro, then turn off.

GODIAG GT100 + Autel MD808 Pro Test CAS4 ECU

GODIAG GT100 + Autel MD808 Pro Test CAS4 ECU


Now let’s exit to press “Read Codes”, turn on the switch of test platform.

Fault codes have been read out, turn off test platform switch again.

GODIAG GT100 + Autel MD808 Pro Test CAS4 ECU


Continue to read live data, exit and press “Live Data”, turn on test platform switch again, live data came out.

GODIAG GT100 + Autel MD808 Pro Test CAS4 ECU


As you see, Autel MD808 Pro can read ECU data when I turn on the test platform switch every time. With a GODIAG GT100 connector, I can also diagnose if the protocol communication was normal. They all play an important part in routine work for mechanics.

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