OBD-II auto scanner system monitors multi-regions of the engine operating system, three regions of them are continuously monitored while other regions just will be monitored in certain conditions. Activating these discontinuous monitoring device need the vehicles under the work conditions of travelling the certain distance and time at a certain speed or special engine temperature?acceleration and deceleration alternately recycling etc to be monitored, this is called Readiness Tests
Not all of vehicles are applicable to this test. For those vehicles in OBD-II standard can be conducted the
Readiness Test with OBD-II car code scanner diagnosis program. Fcar automotive diagnostic support almost al OBD-II standard vehicle.
Data stream test function
Through establishing the communication between obd ii code scanners and automobile computer, get shared data out from RAM of the vehicle computer microcomputer to analyze vehicle trouble, so the data stream testing function is an important function of obd code readers. Data stream is divided into static data (KOEO) and dynamic data (KOER).
All vehicle that adopting microcomputer auto scan tool system can using obd ii code scanners to readout the data stream that output by vehicle various electroniccontrol unit microcomputer through diagnostic socket and reflects the electronic control unit controls system working conditions. Maintenance personnel can judge whether the electronic control devices work properly by making numerical analysis of various parameters of data stream, providing the basis for finding cause of the malfunction.
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