1. Turn the key to the "ON" position without starting the engine. The check engine light should come on and stay on for a few seconds before turning off. If it does not come on, it may be faulty and should be inspected by a mechanic.
2. Start the engine and let it run for a few minutes. The check engine light should turn off if there are no problems with the engine. If it stays on or flashes, it indicates that there is a problem with the engine and you should take it to a mechanic for diagnosis and repair.
