In the event of an ABS malfunction, the ABS warning light 1 on the instrument panel comes on, but the normal braking system remains fully functional. The vehicle should be sent to the distributor or Opel/Vauxhall service center for inspection and repair as soon as possible.
Electrical characteristics
Hydraulic characteristics
Operational check
After all work not related to ABS parts, it is sufficient to carry out a simple operational check. This means that 3 seconds after the ignition is switched on, the ABS warning light on the dashboard should go out. If the ABS warning light on the dashboard does not go out or comes on intermittently while driving, there is a problem with the system.
Attention should be paid to the protection against electrostatic discharge, which, if not observed, may damage the unit (integrated circuit), in particular, the pressure sensor in the CCD. Appropriate measures should be taken, such as protecting the workplace from electrostatic discharge. If such measures are not available, you can wear an antistatic wrist strap, which is located in the trunk of the car.
After carrying out work related to the hydraulic unit or the ABS control unit (e.g. troubleshooting), check the entire ABS system.
The test can be carried out with the device «TECH 2» in accordance with current testing guidelines. At rest, with the ignition on, an ABS self-test occurs, which, depending on the circumstances, can be heard from the noise of the bleeder pump.
When carrying out work on vehicles with ABS, the following conditions must be observed:
- when carrying out electric welding, remove the mains plug from the ABS control unit;
- when painting, the temperature of the ABS control unit must not exceed 80°C. After carrying out work on the brake system, air must be pumped out of it. Check all connections for tightness. After completion of repair work, check the reliability of the battery connection;
- it is forbidden to use temporarily assembled circuits for launching. Attention should be paid to the reliability of all cable connections. Never insert or remove the cable multi-pin plug from the ABS control unit with the ignition on.
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