Perform a root cause analysis > Perform a root cause analysis by using the 5Whys methodology
Add 5Whys and Why questions to an existing Why question
While investigating the root cause, you implement the 5Whys by adding the required 5Whys and the Why questions to determine which defect is the root cause of the Problem Solving process. For an existing why question, you might need to perform a detailed investigation to examine the various options that might result in identifying the root cause. In such a case, you can select the existing Why question and add a 5Why or add only Why questions to the existing Why question.
This allows you to create multiple branches of 5Why and Why questions that help you to perform the Three Legged 5 Why analysis. In this type of analysis, you create a branch of a 5Why and Why questions for the following types of analysis:
Specific: This analysis identifies why the specific problem occurred.
Detection: This analysis identifies why the problem was not detected earlier.
Systemic: This analysis identifies why the system allowed the problem to occur.
The following video shows how to add a 5Why, its Why questions, and its child 5Why.
Procedure
- From Launcher, click Changes .
If this option is unavailable, search for it. You can pin it from the search results for future access.
From the CHANGES folder, select and open the Problem Solving process that you want to edit.
Click the Root Cause Analysis work mode.
Note You must have already created the problem description defect before creating the 5Why.
- In the left pane of the Root Cause Analysis work mode, expand the defect and select the existing Why question where you want to add a new 5Why or Why question, and do the following:
Drag an existing 5Why to the Why question in the left pane. In the confirmation message, click Update. The Analysis Dimension value of the 5Why is updated with the value of the Why question.
To add a new Why question to the existing Why question, choose More Commands
New
Why. Example
To add a new 5Why to the existing Why question, choose More Commands
New
5Why. Example
- Repeat the steps until you have added all the required 5Whys and Why questions to the existing Why question.
If you add a Why question to an existing Why question, a blue bar appears in the parent Why question to indicate that it has child Why questions. Each child Why question is created in a separate box with an arrow from the parent to the child. If you add a 5Why to a Why question, a purple bar appears in the parent Why question to indicate that it has a child 5Why.