190D 2.5 (201.126) L5-2.5L DSL (602.911) (1987)
/l5-2.5l_dsl_(602.911)/Page-944001.png)
Idle Speed/Throttle Actuator - Electronic: Description and Operation
The RPM sensor reads the engine speed and creates an AC voltage signal for delivery to the control unit. The control unit receives the signal and
performs a nominal-actual value comparison. During this process, the idle speed is maintained at a contant speed by the electromagnetic actuator.