Red LED Light Consistent, steady flashing and beeping indicates the COP is producing the correct amount of voltage.No response or an inconsistent response indicates the COP is NOT producing the correct amount of voltage. This may be caused by one of the following: 1.Fouled spark plug, or incorrect gap 2.Damaged/corroded wires or connectors 3.Faulty coil or PCM Green LED light Consistent and steady flashing indicates the duration of the arc is correct. No response or an inconsistent response indicates the duration of the arc is NOT correct. This may be caused by one of the following: 1.Shorted windings inside the coil 2. Resistance or bad connections in the 3. primary / secondary connections 4. Faulty coil
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