Swift GL L4-1298cc 1.3L SOHC MFI (2000)
Crankshaft Position Sensor: Description and Operation
The sensor consists of magnet and coil. It is mounted on oil pan with specified air gap between the sensor core end and crankshaft timing belt pulley
tooth.
As the crankshaft turns, AC voltage (pulse) is generated in the sensor.
ECM (PCM) uses this signal as;
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a data to calculate the engine speed
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one of the signals for cylinder identification
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one of the signals to monitor occurrence of a misfire
Engine Start Signal
This signal is sent from the engine starter circuit. By receiving it, ECM (PCM) judges whether the engine is cranking or not and uses it as one of the
signals to control the fuel injector and fuel pump relay.
