The most common methods of detection in automobile electronics are:
The electronic dashboards of the vehicles are equipped with micromechanical controls and self-censorship. The electronic controller of the electronic dashboard, provided that the instructions are given, will conduct a systematic check of its main performance device, and, in the event of an impediment, warn and warn in a different way that the performance system is impaired, and that there will be storage of the obstructive code so that the barrier code will be moved out of the maintenance and point out the impediment. When the dashboard is confirmed to be impaired, a test shall be conducted。
(1) test with fast detector
Quick-detectors can send imitations of sensor signals, and use them to detect obstructions roughly agilely. When a tester is used to enter a signal into the dashboard, the dashboard may perform roughly normally, stating that the sensor or its circuit is impaired. If the expressor is still not able to perform, the tester is then attached directly to the relevant input plugin of the dashboard, at which point, if the expressor is able to perform normally, the description of the beam and the connector is impaired, otherwise the evaluation panel is impaired。
(2) testing with computer rapid tester
Computer fast-testers can mimic the flow of fuel and the signal of speed sensors, and also input the signal from the tester from different parts to verify the normality of the sensor, the beam pair computer and the performance device。
(3) testing with lcd tester
When tested with a lcd tester, it is directly on the dashboard and provides a reference input signal for the dashboard and the central information centre, which detects the state of the central information event. The objective of this test is to further verify whether the dashboard has barriers。
Commonly obstructive detection of car electronics
Impediments to the electronic display system of vehicles are generally found on sensors, connectors, conduits, individual meters and performances. The sensor circuits should first be disconnected or dismantled, and they should be individually raided with detection equipment。
(1) at the beginning of the sensor's detection, the sensor's circuits are severed or removed, and the instrument is used for individual searches。
The detection of various types of electrical resistance sensors is usually the method by which their resistance values are measured is decisive in their merits, i. E. The measurement of the resistance values is robust compared to their assigned scale resistance values, the absence of endexes in the decisive sensors, and the assessment of internal short circuits of the sensor if the measured values are smaller than the assigned values; otherwise, the internal short circuits of the sensor or the war was poor. Sensors, like others, are usually non-removable and non-maintenance components, and can only be replaced if prevented。
(2) seizure of a contiguous device
The vehicle receiving the electronic instrument connects the wire to the dashboard for each of the many connectors required. As in the case of these contiguous devices, differential colours are usually accepted in order to identify the sector to which it belongs. For the purpose of encapsulating its contiguity, it is solid and reliable, with closed locks on the contiguous device. The raid may be conducted by eye-to-eye or hand-to-hand approach, with a contiguous device ready and equipped, plugs and plugs that are war-resilient and non-collarized. The hand-touching of a contiguous device in the event of an instrument circuit should not feel at any significant temperature, and if the temperature is too high to justify the failure of the contiguous device to fight, the cause should be identified for its removal. Vehicle maintenance network。
(3) individual instrumentation hinders diagnosis
In the event of an impediment to an individual instrument on an electronic dashboard, the departments associated with the instrument should be inspected. The starting point shall be to check the contiguous conditions of the routes, to cover the operational status of the contiguous instruments, whether the lines are damaged, ironed, short-circuited or broken, etc. The instrument and the sensor shall then be tested separately with the equipment of the detection device, to identify the reasons for the obstruction, to repair them and, if necessary, to replace new elements。
(4) impediments to testing
In the event of an impediment to the performance section of the electronic dashboard, the performance device on the dashboard shall be reconciled to a static performance state, with careful inspection of whether there are any additional impediments, and with the use of detection devices for the deployment of serious searches of the associated circuits or devices. If only one or two strokes or bands are unlighted or absent, clarify that the pulse signal transmitted by the logical circuit board via multiple circuits is accurate, probably because of the abnormality of the sectoral segment of the representation device, where the environment should be further searched, which is war-torn and should be secured to ensure the circulation of the circuits; if the electronic device itself has its own title, the performance device or circuit should normally be replaced board
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