If your doing this to check what lights may or may not be on, just get a simple image on google and compare. If you want to do other tests, a quick search brought [https://www.f150forum.com/f38/instrument-cluster-ic-dealer-test-mode-38916/|this] up and this might be what your looking for.
Hope this helps! If it answered your question, please hit the answer button!
If your doing this to check what lights may or may not be on, just get a simple image on google and compare. If you want to do other tests, a quick search brought [https://www.f150forum.com/f38/instrument-cluster-ic-dealer-test-mode-38916/|this] up and this might be what your looking for.
Hope this helps! If it answered your question, please hit the answer button!