The average car airbag can only be checked with an airbag detector, and the airbag system cannot be tested with a test light, and a voltmeter or ohm meter. Because the airbag is easily detonated by an extremely high test current. Therefore, there are also certain maintenance requirements for quick maintenance of automobile airbags. So what are the maintenance requirements for car airbags? How do you quickly repair an airbag malfunction in a car?
(1) Installation and maintenance work can only be done by trained maintenance department staff.
(2) The airbag system is not allowed to be opened or repaired, only new components can be replaced and used.
(3) The airbag device has a replacement date (there is a label in the toolbox, and the US car is under the sunshade), and the airbag device must be replaced after 10 years even if it does not crash.
(4) If the airbag device or its detonator falls to the ground from a height of more than 0.5m, they can no longer be loaded, and the airbag components that have suffered mechanical damage (such as dents, cracks) must be replaced. Cracks can cause damage to the printed circuit board and cause the airbag system to malfunction.
(5) To prevent accidental detonation of the airbag, remove the negative electrode of the battery and cover it when performing any operation on the airbag system! The plug of the power supply behind the central control panel should also be unplugged.
(6) The airbag system must be installed on the vehicle as soon as it is removed from the warehouse. If the loading must be interrupted, the airbag device must not be left unattended.
(7) When the airbag device is removed from the vehicle, the cushion on the airbag device must always be placed upward. This is an important safety measure, if the position is not normal, if it is detonated, the airbag device will fly upward and vertically, which is very dangerous.
(8) Airbag devices must not be oiled and cleaned with detergents or similar substances, even when exposed to temperatures above 100°C for a short period of time.
(9) If the airbag device is detonated in an accident, all components (energy storage, airbag device, detonation device, voltage converter, wiring harness) need to be updated for safety reasons (such as cracks on the printed circuit board).
The car reported an airbag failure with an airbag fault code, but this is not necessarily a broken airbag. For example, the computer detects that the fault code is an open circuit for the steering wheel airbag igniter. There is a possibility that the airbag is really broken, there is a possibility that the steering wheel hairspring is broken, there is a possibility that the line contact is poor, or there is a possibility that the airbag computer board is broken. Do you dare to replace the expensive airbag directly? Don't dare!
Of course, the best method is to use special detection instruments for airbags or large instruments such as car maintenance synthesizers/decoders, but we may not have such instruments around us, the simplest and fastest detection method is to use a simple tool to judge maintenance.
