Buick Regal Cam Position Sensor
About Cam Position Sensor
Cam Position Sensor, as the name suggests, is a sensor monitoring the correct position of the camshaft and also checks its rotational velocity. The sensor works in coordination with the Crank Position Sensor and, based on the data transmitted by these sensors, the ECM (Engine Control Module) precisely processes the timing of ignition and the fuel injection systems.
What is the Purpose of Cam Position Sensor?
As the name suggests, the crank position sensor determines the camshaft exact position and also the camshaft rotational speed, which are two very important parameters for the ECM (Engine Control Module) to operate different control systems such as fuel injection timing and ignition timing. The sensor initiates a signal when the cylinder 1 piston reaches the top dead center that is critical for determining the sequential injection of fuel.
How Cam Position Sensor Works?
The Camshaft sensor operation is very close to the sensor's crank position. It works on the Hall effect principle. The ring gear attached to it also rotates as the camshaft rotates causing variation in voltage of the Hall IC located in the sensor head. The ECU converts this difference in voltage to velocity of rotation of the camshaft.
Where is Cam Position Sensor Located?
Usually the camshaft sensor is mounted onto the cylinder head. Though subjective to the manufacturer, for each vehicle the position is more or less the same.