If you have a limit on the In Range and Coerce function excluded, the coerced(x) output can still output that excluded value if the input (x) value is out of range:
This behavior is documented, but can be counter-intuitive for some users:
This VI Analyzer test detects an In Range and Coerce function with integer limits, where one or both are excluded, and the coerced(x) output is wired. You may want to consider incrementing/decrementing the affected limit value and changing it to be included, so the coerced(x) output will always match the limit values.
This test is saved in LabVIEW 2015. Follow the instructions here to install and use this test.