S 600 Coupe (140.076) V12-6.0L (120.980) (1995)
Camshaft Position Sensor: Description and Operation
PURPOSE
In order to obtain correct coordination of the fuel injection timing, the fuel injection sequence must be synchronized. The two camshaft position
sensors (left L5/2 and right L5/3) are used for this purpose.
Camshaft Position Sensor (L5/2 And L5/3) Location
LOCATION
Due to space limitations, both sensors are installed on the left valve cover above the intake camshaft.
OPERATION
Each camshaft position sensor produces two AC voltage signals per camshaft revolution. The EZL/AKR control modules (N1/4 and N1/5) use this
information to determine the position of cylinder #1 or 12. The signal is then processed by the EZL/AKR control module into a square wave signal
and transmitted to the LH control module via controller area network (CAN). The control module synchronization takes place during start-up to
about 600 RPM.