2. The system includes an electronic control device, sensors (mounted on the wheel), a hydraulic modulator and the necessary valves and relays. On models with ABS, disc brakes are installed on all four wheels. The system is designed to prevent wheel locking during sudden braking. This is achieved by automatically weakening the braking force on the locked wheel and then reinforcing it. This procedure is performed several times per second by the hydraulic modulator.
3. The modulator is controlled by an electronic device that receives signals directly from sensors installed on the car's wheels. The sensors monitor the condition of the wheels - whether they are locked or not. The modulator regulates the braking force on the front brakes independently, and on the rear brakes - as a single unit.
4. The ABS unit is installed between the master cylinder and the brakes.
5. If the ABS message remains illuminated on the instrument panel for more than approximately 4 seconds or appears intermittently (or is constantly on) when the car is moving, this means there is damage in the system.
In this case, it is recommended to have your Opel dealer perform a full system test using appropriate diagnostic equipment.
6. To prevent possible damage to the electronic control device, be sure to disconnect its wiring connector before performing welding work.
7. It is recommended to remove the control unit before performing work that involves heating the vehicle to high temperatures (for example, drying paint).
8. When cleaning the vehicle with steam, do not direct the water/steam jet directly at the control unit.
9. Do not disconnect the control unit wiring connector when the ignition is on.
10. Do not use a starting device to start the engine.
Original posted on the website [opelbook.ru]
11. After working on the ABS system components, make sure that all electrical wiring connectors are connected correctly and have the system checked by an Opel dealer at the earliest opportunity.
12. All models with ABS before 1991 are equipped with the ABS-2E system. Since 1992, the ABS-2EN system has been installed on models, which can be identified by the location of the electronic control unit (bolted to the hydraulic modulator).
13. The main differences between the two systems lie in their electrical components, for example, the 2EN system does not have an interference protection relay.
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