GODIAG GT100+AUTO TOOLS OBD II User manual

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GODIAG GT100+AUTO TOOLS OBD II
Breakout Box ECU Connector
Operation Manual
1.2021

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1. Document Statements
Please read the following instructions carefully:
The manual may help you learn about how to use GODIAG GT100+ AUTO TOOLS OBD II Breakout
Box ECU Connector in a faster pace. Please observe your local national laws and regulations. In case
of illegal use of GODIAG equipment, the user shall bear all risks and the company shall not assume any
liability.
GODIAG GT100+AUTO TOOLS OBD II Breakout Box ECU Connector Operation Manual is compiled
by GODIAG. No company or individual may copy or backup this manual in any form (electronic seal,
mechanical, photocopy, recording, picture or other forms) without the written consent of GODIAG. The
document shall not be used for commercial purposes.
2. Trademark Copyrights
GODIAG has been registered as a trademark in China and several overseas countries.
Disclaimer and limitation of liability
All information, specifications and images included in the manual are latest information as of the date of
publication. GODIAG reserves the right to make changes without prior notice. The contents in the manual
have been carefully reviewed, but no warranty is given as to its completeness and accuracy of contents
(including specifications, functions and images). GODIAG does not bear any direct or indirect
compensation for damages or economic damages.
Notes: before operating or maintaining the equipment, please read the manual carefully, especially the
safety precautions.
3. Service and Technical Support
www.godiag.com
[phone]
[e-mail]
4. Safety Precautions
In order to protect the safety of yourself and others and prevent damaging the equipment and
vehicles, please read the safety precautions carefully.
Since various programs, tools, parts and techniques are used for the vehicle maintenance and different
operators may have different operations, due to various kinds of diagnostics compliers, the manual
cannot predict every situation and provide related safety suggestions.
Vehicle service technicians are in charge of fully learning about the system under tests, and applying
appropriate repairing approaches and testing programs.
When conducting tests, it’s necessary to apply proper operations to avoid personal safety risks to
yourself and other people inside the working area and prevent damages to the equipment in use or
vehicles under tests.

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Before starting to use the equipment, please refer to and observe the safety information provided by the
vehicle or equipment manufacturer and applicable testing programs. Please
use the equipment according to the Operation Manual, read, understand, and observe all safety
information and instructions included in this manual.
Please at least observe the following safety precautions working at the vehicle:
◆Please work at a safe environment where it’s essential to keep the working area ventilated since
the vehicle exhaust is harmful to human bodies.
◆Wear goggles that meet the ANSI standard
◆Set the gear to P (auto) or N (manual) and guarantee the parking brake is enabled (hand brake
pulled)
◆Make sure your clothes, hair, hands, and tools stay away from the operating engine parts or hot
engine parts
◆Place bricks before each wheel to prevent the vehicle from moving accidentally
◆The vehicle must be attended during testing and operating
◆Pay special attention when working around the ignition coil, distributor cap, ignition wire, and
ignition plug for that these parts can generate dangerous voltages
◆Make sure fire extinguishers suitable for the gas/chemicals/are electrical provided at the site
◆Do not plug or unplug the equipment when the ignition switch is on or the engine is working
◆Keep the equipment dry, clean, and avoid touching oil, water or grease. Use a clean cloth to clean
the equipment.
◆Do not operate the diagnostic equipment during driving to avoid accidents owing to the
distraction.
◆Please refer to the maintenance manual when maintaining the vehicle and operate strictly
according to the precautions, otherwise it may cause human injury or damages to the diagnostic
equipment.
◆Do not place the diagnostic equipment onto the distributor of the vehicle for that strong EMI may
damage the equipment.
◆When replacing the battery with GT100+, do not switch on the ignition switch or start the vehicle.

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5. Contents
1. Document Statements ............................................................... 2
2. Trademark Copyrights ................................................................ 2
3. Service and Technical Support...................................................2
4. Safety Precautions................................................................. 3
5. Contents................................................................................. 4
6. Feature Overview....................................................................... 5
7. Outlook.......................................................... 5
8. Functions and How to Use.......................................................... 6
9. Product Package List................................................................ 12
10. Product Specifications ........................................................... 13
11. Warranty ..................................................................... 14
6. Feature Overview
GODIAG GT100+ is a new ECU connector and protocol communication testing equipment. It’s
convenient for users to individually connect the ECU module to diagnose, program and code. It may also
be used for testing whether the diagnostic / programming /coding tool can send communication signals.
See the detailed functions as below:
GT100+ OBDII Protocol Detector and Protocol Communication Diagnosis
GT100+ Short circuit to forcibly activate the instrument and immobilizer.
GT100+ Voltage / Current Value Display
GT100+ OBDII Display custom CAN protocol communication
GT100+ ECU Connection
GT100+ Expanded Connection
GT100+ OBD1 Diagnostic Interface Converted to Standard OBD2
GT100+ Multi-ECU Connection Mode
GT100+ Extension cable Function
GT100+ Power the Car When Replacing the Battery
GT100+ Optional dedicated Adapter
GT100+ Work with CAS4/CAS4 + Programming Test Platform
GT100+ Work with FEM/BDC Programming Test Platform
7. Outlook

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①OBD2-DB15 diagnostic main cable
②DC12V interface
③Indicators
④Working voltage and current value display
⑤Banana plug interface
⑥DB25 color jumper ECU dedicated interface
⑦Power switch
⑧12v (30) power switch.
⑨12v (15) power switch
8. Functions and How to Use
➢1. OBDII Protocol Detector and Protocol Communication Determination
Standard OBDII interface protocol

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

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Tips on Using DB25 Color Jumper Cable:
1. 12V (30) defined as car positive (+)
2. 12V (15) defined as car ignition with power supply
3. OBD 12V directly connected to the vehicle OBDII diagnostic port 12V
4. OBD 1.2.3.7.8.9.11.12.13 are correspondingly connected to the 1.2.3.7.8.9.11.12.13 pin port.
5. Once REL GND and GND are connected, REL OUT outputs 12V vehicle battery positive electricity.
6. K-LINE L-LINE are correspondingly connected to the 7.K-LINE and 15. L-LINE port.
4. CAN-H and CAN-L are correspondingly connected to the 6.CAN-H and 14.CAN-L port.
✓By connecting the vehicle and the diagnostic tool via OBDII, Godiag GT100+ can check whether the
communication of the vehicle OBDII diagnostic port is normal.
✓To monitor and display in real-time the voltage of vehicle OBDII interface. If the voltage is lower than
11V, please stop diagnosing and programming, otherwise the car will fail to start, the data is lost, the
module is locked etc because of low battery.
1.) Used to check whether the diagnostic / programming / coding tool can send communication signals.

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①Connect the diagnostic / programming / coding tool to the OBD2 port of GT100+. (Do not connect it to
the vehicle)
②Select the vehicle model and functions to operate.
③If the device can send the communication signals, the corresponding protocol indicators on the
GT100+ will be ON or blink. If the device can't send the communication signals, there will be no
indicator light on, it means the device has a connection problem or is damaged.
2.) Test the communication status between the code reader and the vehicle protocol

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①GT100+ is connected to the vehicle OBD2 port.
②Start the Power switch, and GT100+ will display the current accumulator voltage. (If no voltage is
displayed, please check the vehicle diagnostic interface and the cable. If the voltage is lower than 10V,
please do not start the vehicle or go ahead for function operation, Please charge the car with a car
charger.)
③Connect the diagnostics / programming / coding tool well. When it communicates with the vehicle, the
corresponding protocol indicators on the GT100+ equipment will be lit up or blink. It’s convenient for
users to observe which protocol is under use by the vehicle module and the status of the
communication.
3.) GT100+ program key for VW, Porsche, Mitsubishi etc with all keys lost - activate the instrument or
immobilizer module.
A. To program VW 4th generation / 5th generation Lost all keys (for example: new A6LTouaregA4 Q5 A7),
please use GT100+ to short-circuit banana connector PIN 16----PIN 1 to lit up the dashboard, aft that use
the key programmer tool to connect with the female adapter of GT100+ for data collection. Some vehicle
dashboards won't be lit up, but data can also be collected, for example:A6L Q7.

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B. To replace the engine ECU of Toyota or to use some key programmer to program Toyota when all keys
lost, it needs to short-circuit PIN13-PIN4