GPS locator OBDII, research and development of car failure solutions

The product supports all OBD-Ⅱ protocol models (including VPW, PWM, ISO, KWP 2000, CAN protocol) produced after 1996. It is a new personal computer (PC)-based scanning tool. The product can be conne


The product supports all OBD-Ⅱ protocol models (including VPW, PWM, ISO, KWP 2000, CAN protocol) produced after 1996. It is a new personal computer (PC)-based scanning tool. The product can be connected to a laptop, desktop computer or mobile phone to read the fault code and know the meaning of the fault code, clear the fault code of the car, monitor the fuel consumption, and display the data flow of the sensor (such as speed, water temperature, etc.) )...... The function is very powerful!

Vehicle control protocol and diagnostic equipment

At present, the vehicle control communication protocols used by car manufacturers in various countries are as follows:



Digital/analog exclusive control signals and protocols for other vehicles

Most of Taiwan’s new cars use the ISO protocol. Old European cars use the KWP protocol. Some BENZ cars use the MOST protocol. Compared with the new/Japanese/European cars, they also use the CAN BUS protocol (VAG’s AUDI/VW B6, MAZDA 6). Etc.), and the next-generation star agreement is FlexRay. CAN BUS protocol is also often used in automated industrial control systems (such as temperature control/elevator air-conditioning control, etc.). Usually there is a J1962 16PIN diagnostic socket between the bottom of the steering wheel and the upper edge of the foot pedal, allowing you to connect the 16 PIN J1962 socket through the OBD2 cable to read ECU data.

At present, automotive computer diagnostic equipment can be divided into two types:

1. Universal diagnostic equipment


Only the error code can be read/cleared. The error code will be displayed on the LCD as a PXXX string. After the error code is read, please refer to the manual for comparison. Not many functions are available.

PC version:

Connect to a computer and use graphical display interface.

Carry out ECU monitoring, dynamic data analysis and recording for the engine part of each agreement car model, read/clear error codes. Including VIN CODE reading, engine speed, vehicle speed, engine water temperature, load, Air flow rate, O2 sensor, TPS and other related data. There are many types of applicable vehicles.

2. Exclusive diagnostic equipment

In addition to the engine, it also includes ABS/instrument/gearbox/airbag/comfort CODEING/SELF TEST/LOGIN. Original factory use, strong function, the original factory exclusive software and hardware prices are not cheap. Most of these protocols belong to the protocol of the physical layer/data connection layer, and need to be matched with the upper layer protocol (such as SAE1979) for subsequent data analysis and presentation.


Supported OBD-II protocol:

SAE J1850 PWM (41.6 Kbaud)

SAE J1850 VPW (10.4 Kbaud)

ISO 9141-2 (5 baud init, 10.4 Kbaud)

ISO14230-4 KWP (5 baud init, 10.4 Kbaud)

ISO14230-4 KWP (fast init, 10.4 Kbaud)

ISO15765-4 CAN (11bit ID, 500 Kbaud)

ISO15765-4 CAN (29bit ID, 500 Kbaud)

ISO15765-4 CAN (11bit ID, 250 Kbaud)

ISO15765-4 CAN (29bit ID, 250 Kbaud)

Output interface: Bluetooth

LED indicator: OBD transmit/receive, RS232 transmit/receive, power supply

Operating voltage: 12V, (with short circuit/over voltage protection function)


product description:

This product ELM327 is a wireless Bluetooth connection. The OBD-II software used is free software. After connecting your mobile phone or laptop to the onboard computer hardware in the car, you can use this software to get the information you need from the onboard computer.

The product supports 2 ways of use: Android phones and laptops



The software can perform the following operations:

Read error diagnostic codes-general and manufacturer-specific, and display their meaning (the database has more than 3000 general code definitions)

Clear the error code and turn off the MIL ("Check Engine" indicator light)

Display current sensor data, including:

Engine revolutions per minute (RPM)

Calculated load value

Coolant temperature

Fuel system status


Short-term fuel situation

Long-term fuel situation

Intake manifold pressure

Fuel injection advance time

Intake air temperature

Air velocity

Absolute position of throttle valve

Oxygen detection voltage associated with short-term fuel state

Fuel system status

Fuel pressure

There are many other data for fuel consumption monitoring...