Check ABS solenoid valves at front axle

This function is used to activate the ABS unit solenoid valves.
Test conditions:
Procedure:
  1. Start the function.
  2. Press the "OK" button to start. The test is performed automatically.
  3. Increasing of the brake pressure to 2 bar on the front axle's both sides.
  4. Keeps the brake pressure.
  5. Releasing the brake pressure front left.
  6. Increasing of the brake pressure to 2 bar on the left front axle.
  7. Keeps the brake pressure.
  8. Releasing the brake pressure front right.
  9. Increasing of the brake pressure to 2 bar on the right front axle.
  10. Keeps the brake pressure.
  11. Returns to normal mode.
  12. The function is done.