Ford 1997 Aspire Manual page 16

Check Engine Warning Light
This light illuminates when the electronic engine
control system is not working properly. This is
the computer system that controls the operating
conditions of the engine.
Check engine warning light
This light illuminates briefly when you turn the
ignition to the ON position, but should turn off
when the engine starts. If the light does not
illuminate when you turn the ignition to the ON
position or if it illuminates and stays on when
you are driving, have your vehicle serviced as
soon as possible. This indicates a possible
problem with one of the engine's emission
control systems. You do not need to have your
vehicle towed in.
If the light flashes briefly while you are driving,
it means that the condition is no longer present.
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