What the sign really says word for word is this:
"if your vehicles monitors are not set, your vehicle will fail smog and you will be charged. The readiness of the monitors is not known to us until the test is complete. Some causes of monitors not being set are, Battery disconnected and Check engine light reset"
Now! if the check engine light is on we absolutely will not run the test. It's NOT our fault if your check engine light is NOT on and we run the test. Please be accurate when you post something that can hurt a business!!!