300E 4MATIC (124.230) L6-3.0L (103.985) (1990)
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Variable Valve Timing Solenoid: Description and Operation
Camshaft Timing Adjuster
300 CE, SL ONLY
The intake camshaft of the 104 engine is equipped with an electro-magnetic camshaft adjuster. The camshaft adjuster enables the CIS-E 5 control unit to
specifically tune the intake valve timing for improved torque, volumetric efficiency, and driveability.
Camshaft Adjustment
When the camshaft adjusting solenoid is energized the camshaft is turned 34° of crankshaft rotation in the advanced direction. When the CIS-E 5 control
unit removes the current to the solenoid the camshaft returns to its retarded position. The camshaft position sensor monitors camshaft position as an input
parameter for the ignition control unit.
