Honda Diagnostic System Overview
With the electronic technology and computer applications in the car, in the late 70s or early 80s, there have been a dedicated car Fault detector, use of such equipment, can be detected and observed vehicle electronic control system of work. For example, Ford Motor Vehicle's EEC-II detector, Volkswagen's VAG1551 fault diagnostic, fault code can be used for record storage, control signals EFI engine and find the fault location. However, this specific fault diagnostic for fault diagnosis, on the operator's technical requirements Therefore, subject to certain restrictions on use.
80 years after the attendant Honda Diagnostic System, the system uses electronic control unit of the electronic control system to detect and diagnose the various components can exist on their own to find out the engine failure, it is called fault diagnosis system. The initial self-diagnosis system requirements for vehicles to a certain degree of test specifications, the system can record the fault code to identify the fault location. A few years later, then there is a vehicle electronic control system can continuously monitor the implementation parameters of self-Honda Diagnostic System that can record the electrical control system of the intermittent fault. Therefore, to reduce the use of special equipment, reduce maintenance costs, and timely and easy to find fault, has been widely used. However, by the electronic control unit memory capacity was limited by the constraints of its diagnostic projects, not more complex fault diagnosis. In order to expand the attendant self-diagnosis diagnostic information and diagnostic functions, some car company also developed many multi-vehicle diagnostic apparatus, the electronic control system to detect and diagnose. These diagnostic features more complete diagnosis of electronically controlled injection system can be many failures, but because of the price of your joints have certain professional and technical requirements and standards are not uniform, so use is restricted. In 1993, the previous car's electronic control system malfunction self-diagnosis self-contained, does not have the versatility and variety, is not conducive to a uniform special instruments, to use the car service and maintenance of inconvenience. This self-Honda Diagnostic System according to U.S. standards known as the first generation of self-Honda Diagnostic System attendant (OBD-I). In 1994, the American Society of Automotive Engineers (SAE) Truck from the proposed second-generation Honda Diagnostic System (Honda hds) standards and norms, as long as the car manufacturer to implement the standard, the diagnostic mode and diagnostic socket. Can be harmonized. Thus, as long as a single instrument can be used on various vehicles detection and diagnosis, and thus to the global automobile electronic control provides a great convenience for maintenance. In the United States. OBD-II universal fast, to 1996, over half of the car manufacturer with OBD-II system, the fault code reading method, except you can use special instruments, you can also use a jumper to read .
