Caution: Accidental deployment of an airbag can cause serious injury, so only carry out the operations and use only the tools specified in this chapter.
1. When performing work on the SRS system, wait at least 30 seconds after turning the ignition key to the "LOCK" and disconnect the wire from the negative battery terminal before proceeding with further work.
Attention: the SRS system is designed in such a way that for a short time (at least 150 ms.) sufficient tension is maintained (backup power) to deploy airbags and pretensioners if battery power is cut off in an accident.
Note: after disconnecting the wire from the negative terminal of the battery, the memory of some electronic devices (clock, audio system, etc) will be erased. Therefore, before starting work, write down the basic settings from the memory of the audio system. After completing the work, restore the basic settings of the audio system to its original position and adjust the values of the electronic clock.
2. Since the signs of a malfunction in the SRS system are difficult to detect, when troubleshooting, trouble codes are the main source of information about the system.
3. When troubleshooting the SRS system, always check for trouble codes before disconnecting the wire from the negative battery terminal.
4. Never install SRS components from another vehicle. When replacing system components, use only new original spare parts.
5. After the deployment of airbags or seat belt pretensioners, it is necessary to replace the deployed system components and the SRS electronic control unit with new ones.
Attention:
- SRS system component (airbag or seat belt pretensioner) can only work once. Make sure the component has been replaced after tripping.
- Wear protective goggles and gloves when working on a deployed seat belt pretensioner. If the contents of the electric igniter come into contact with the skin, immediately wash the affected area with soap and water.
6. Never attempt to disassemble the air bag module, seat belt pretensioner, coiled wire and SRS wire harness as they cannot be repaired or reused.
Caution: The airbag module contains a poisonous and flammable substance.
7. Do not attempt to probe the airbag module or belt pretensioner with electrical tools (e.g. measure the resistance) or otherwise interfere with the components of the SRS system.
Attention: when the tester measures the resistance of the electric igniter circuit of a component, its unauthorized operation may occur.
8. If any component of the SRS system has been dropped or hit against other objects, or if cracks, dents, deformation, corrosion or other defects are found on the case, bracket or connector, replace this component with a new one.
9. Keep airbag modules and pretensioners free of water, oil, and fuel. Do not allow the airbag module and pretensioner to exceed 93°C.
10. Store SRS components temporarily removed from the vehicle in a clean and dry place, out of the reach of electrical equipment. The airbag module should be stored on a flat horizontal surface with a protective pad (soft side) up. It is forbidden to place foreign objects on these parts, as well as store by placing one component on top of another.
11. If the car is equipped with side airbags for the front seats, then:
- A) Do not install accessories on or near the side airbag module.
- b) Do not apply much force to the side of the seatback.
- V) Before driving, do not cover the seats with any additional covers, as the installation of additional or non-original covers reduces the effectiveness of the side airbag.
12. When performing work in the areas of installation of the components of the SRS system and (even if these works are not directly related to the components of the SRS system) the following requirements must be met:
- A) When removing or installing parts, do not allow any shocks or impacts on the components of the SRS system.
Caution: Do not place any objects on the airbag module or seat belt pretensioner.
- b) SRS system components cannot withstand temperatures above 93°C (SRS ECM, airbag modules, coiled wire, side impact sensors and pretensioners), so remove the above items before stoving the car after painting.
- V) Before carrying out welding work on the vehicle, do not forget to disconnect the wire from the negative terminal of the battery, as well as the connectors of the airbag modules and belt tensioners.
- G) With the ignition on, avoid applying sharp blows with a hammer, etc. objects on the body in the area of \u200b\u200binstallation of the SRS electronic control unit or side impact sensors. Otherwise, it may cause unexpected operation of the SRS system components during maintenance and repair.
- d) Switch off the ignition and disconnect the cable from the negative terminal of the battery before carrying out work related to the use of pneumatic or impact tools, welding parts, or removing heavy vehicle components (seat, instrument panel, etc.).
- e) When removing and installing parts, do not pinch the wiring of the SRS system. To avoid damage to the connector, do not apply excessive force when disconnecting the SRS component connector.
- and) If it is necessary to remove the steering gear, place the front wheels in the straight-ahead position and remove the key from the ignition.
13. After completing work with the SRS system or work in the areas where the SRS system components are installed, perform a system check using the SRS system indicator. In some cases, the SRS indicator may indicate a malfunction in other vehicle system circuits. Therefore, if the SRS indicator lights up, then make sure that the trouble codes were cleared with a tester immediately after repairing or replacing defective parts, including the fuse.
Warning labels
On the vehicle, all elements of the SRS system, as well as elements related to this system, have appropriate labels describing maintenance requirements and safety measures. The location of the labels is shown in the figure.