2009-2010 Suzuki DF70A DF80A DF90A Outboard Service Manual, Page 96Get this manual
1C-2 Engine Electrical Devices: The CMP sensor is GMR (Giant Magnet Resistive) semiconductor type sensorThe GMR semiconductor has the property of varying the electrical resistance depending on the intensity of the magnetic force appliedWhen the line of magnetic force from the magnet to the GMR semiconductor is increased or decreased, the electrical resistance of the GMR semiconductor will changeThe changes in resistance as the magnets pass create the sensors waveformWhen trigger vane on the camshaft reluctor aligns with the sensors internal magnet, the electrical resistance of the GMR will decreaseWhen trigger vane moves away from the sensor, the electrical resistance of the GMR will increaseWhen the GMR semiconductor voltage becomes higher than the standard value, the sensors signal will be lowerAnd when the voltage becomes lower than the standard value, the sensors signal will be higherThe six camshaft trigger vanes provide six high voltage signals from the CMP sensor to the ECM during one camshaft rotation (two rotations of crankshaft)1 4 Signal High Low