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Thread: merc 300x issue
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08-05-2020, 03:06 AM #15000 RPM
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merc 300x issue
Dose any one know what the power 1 volts relate to on a 2005 300x i have a horn that sounds and on the ddt says horn fault and keeps counting dose not matter is engine is running or not.
Power 1 volts stay at 5volts the only other thing that seems as it might not be correct is the map sensor with just key on its sitting at 14.1.
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