There are many reasons why a test may not be used for diagnosis, lets begin by looking at a diagnostic session. A diagnostic session has three basic phases: the acceptance phase, the diagnosis phase and the operation check phase. Each phase has a set of viable tests that may be used during the session. These phases may sound familiar because a test’s type may be: test, symptom, operational check and acceptance test. Depending on the test’s type, it may or may not be used in the diagnostic session. A test will be added to a set if the test’s type for that particular set is enabled. For example if a test is marked as a Operational Check test it will be added to the set of viable tests used during the operational check phase.
Tests that are marked as symptoms appear in the beginning of a diagnostic session. Tests marked only as “symptom” will not be used in any of the phases.
Prior to TEAMS-Designer 11.5, tests that were marked other than type “Test” were also included in the diagnostic phases. This behavior has been changed as described above. To retain a model’s diagnostic tree, ensure all of the tests are of type “Test” as well.