What is it: Turtle Diagram is a diagram that illustrates the elements of a process for the purpose of helping an auditor address the relevant question when conducting a process audit. Under ISO/TS 16949, we now move to what is called the Turtle Diagram for individual processes. This takes the basics of the process model and adds aspects of the SIPOC to what is being done in the process to satisfy customers. Internal auditors must review these diagrams for every major process in your organization. If the internal auditors don't find such diagrams, they will have to create them as they go.
The Turtle Diagram is a cross between the SIPOC and a cause-and-effect diagram, as the Turtle Diagram looks at how the process satisfies the customer (typically an internal customer at this stage). By looking at what is really happening vs. what procedures say is supposed to be happening, an evaluation can be made as to whether the process is effective in meeting the customer's requirements.
Why use it: The use of a Turtle Diagrams helps to identify the process owner, responsibilities, resources, etc.
Where to use it: At any organization that applies ISO standards.
When to use it: As part of the process ISO auditing approach, auditors need to show proof in their records that you have identified the inputs, outputs and objectives of each process, A Turtle Diagram helps provide this infomation.
How to use it: The information in a Turtle Diagram should already be in your QMS procedures. The Turtle’s four legs represent the pillars of the process:
The Turtle’s tail and head represent the input and the output of the process. Once all of these parts are placed together on a one page diagram a ISO auditor can see visually the individual procedures for that process.