Camshaft Position Sensor: Operation: Operation
WARNING: This page is about a different car, the 2013 Jeep Patriot and 2013 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.
The signal circuit of the camshaft sensor has a voltage of approximately 5 volt. If the segment machined into the exhaust camshaft sprocket is positioned opposite the camshaft sensor, the camshaft signal is approximately 0 volt. This 0 volt to 5 volt signal is used by the Powertrain Control Module (PCM) for detecting ignition Top Dead Center (TDC) of cylinder 1 as the engine rotates. If no signal is supplied by the camshaft position sensor, the vehicle will take a little longer to start and a DTC will be set by the PCM.