SCR system pressure buildup, test

This function is used to check functionality/leak at the pump and hoses.
The pressure should be built up to about 500 kPa.
Test conditions:
Procedure:
  1. Start the function.
  2. Check conditions.
  3. Select to start or cancel the test.
  4. Check the working pressure while the test is in progress.
  5. The function is done.