Starting System: Description and Operation

GF15.30-P-3000M Starter Control, Function
ENGINE 275.950 in MODEL 215, 220
ENGINE 275.951 in MODEL 230 up to Model Year 8
ENGINE 275.953 in MODEL 216, 221 up to Model Year 8
ENGINE 275.954 in MODEL 230 up to Model Year 8
ENGINE 275.980 in MODEL 215, 220
ENGINE 275.981 in MODEL 230 up to Model Year 8
ENGINE 275.982 in MODEL 216, 221 up to Model Year 8
ENGINE 285.950 in MODEL 240
ENGINE 285.980 in MODEL 240





Illustrated model 215, 220, 230, 240

B11/4 Coolant temperature sensor
K6 Starter relay (model 240)
K40/4 Passenger-side fuse and relay module (model 230)
K40/4kL starter relay (model 230)
K40/7 Right front fuse and relay module (model 215, 220)
K40/7kL Starter relay (model 215, 220)
L5 Crankshaft position sensor
M1 Starter
N3/10 ME control unit
N15/3 ETC [EGS] control unit (transmission 722.6)
N73 EIS [EZS] control unit
CAN Data bus

The starter control takes over the actuation of the starter (M1) and interrupts the circuit (circuit 50) to the solenoid switch of the starter (starter deactivation) after reaching the engine cranking speed.

By actuating the ignition starter switch at the electronic ignition switch control unit (N73), from position "2" (ignition ON) in position "3" (START), starter detection is performed by the ME control unit (N3/10).
The solenoid switch of the starter is actuated by the ME control unit via the starter relay.

The voltage supply of the starter relay (coil) is supplied through circuit 87.
The starter relay is actuated by the ME control unit with a ground signal.

If the starting procedure has started, the actuation of the ignition starter switch from position "3" back into position "2" no longer has any influence (touch start).

When reaching the engine cranking speed of 400 up to 700 rpm or a starting time of approx. 5 to 40 seconds (dependent on the engine temperature), the ME control unit interrupts the negative activation to the starter relay and therefore ends the starting procedure.