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Iflash j2534 global programmer3/6/2023 How this API is provided depend on the manufacturer, but they do charge the customer (repair workshop) ordering it. This API can be downloaded from the internet or installed from a CD or DVD. This application also includes a user interface where choices can be made depending on the ECU and what action to perform.Ī vehicle repair workshop that wants to analyze and re-program vehicles from different manufactures must have an API for each. This application will have complete information of the ECUs that are supported by the application. It is important that this application conform to the functions in the J2534 API. ISO 9141, no other protocols have to be supported by the application. Programming of an emission related ECU using J2534 is done from a PC, preferably a laptop computer, with a Win32 operating system (Windows 95 or later).Įach vehicle manufacturer will have an own API software used for analyzing and programming of their vehicles. And the processor must naturally be fast enough to process all messages so that no messages are lost. The J2534 hardware interface should have enough memory to buffer 4Kb of transmit messages and 4Kb of received messages. The maximum source current is 200mA and the settling time should be within 1ms. The power supply should use one of the pins 6, 9, 11, 12, 13 or 14 of the connector and this choice should be selectable in the software. The J2534 hardware interface should be able to provide a supply voltage between 5 and 20 volts to the J1962 connector. J1962-male connector (to the left) and J1962-female connector (to the right). If the vehicle manufacturer doesn’t use the J1962 connector, necessary information for connection has to be provided.įigure 2. The maximum length of the cable between the J2534 device and the vehicle is 5 meters. The connection between the J2534 hardware and the vehicle should be the SAE J1962 connector (Fig 2), also called the OBDII connector. Therefore any device can be used for programming any vehicle regardless of the manufacturer. The vehicle manufacturers programming application is not dependant on the hardware connection. RS-232, USB or maybe a wireless interface. The connection between the PC and the J2534 hardware can freely chosen by the manufacturer of the device i.e. This pass-thru device translates messages sent from the PC into messages of the protocol being used in the vehicle ECU. The J2534 hardware works like a gateway between the vehicle ECU and the PC. The J2534 document withholds requirements for the hardware and software of a J2534 tool. A J2534 API DLL is provided from the hardware tool developer which handles the communication to the PC. The connection between the PC and the J2534 hardware device is up to the manufacturer of the tool, but USB is probably the most common. The J2534 hardware device is to be connected to a standard PC which holds the Application Program Interface (API) from the vehicle manufacturer (Figure 1). The connection between the J2534 device and the ECU is a SAE J1962 connector. The purpose is that only one tool (hardware device), often referred to as the pass-thru device, should be needed for all kind of ECUs. J2534 is a concept that enables flash programming of an emission related ECU regardless of the communication protocol that is used by the ECU.
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