Starter control, function - GF15.30-P-3000KF

ENGINE 271.921 in MODEL 203 with TRANSMISSION 722.6 

ENGINE 271.940 in MODEL 203, 209 with TRANSMISSION 722.6 

ENGINE 271.941 in MODEL 211 with TRANSMISSION 722.6 

ENGINE 271.944 in MODEL 171 with TRANSMISSION 722.6 

ENGINE 271.946 in MODEL 203 with TRANSMISSION 722.6 

ENGINE 271.948 in MODEL 203 with TRANSMISSION 722.6 

ENGINE 271.955 in MODEL 209 with TRANSMISSION 722.6 

ENGINE 271.956 in MODEL 211 with TRANSMISSION 722.6 

The starter control which is integrated in the ME control unit takes over the actuation of the starter and the deactivation of the starter after reaching the engine starting speed.

Starting prerequisites 

The actuation of the starter is performed only during "start enable" (drive authorization) of the EIS control unit and when detecting the engaged drive position "P" or "N" via the ETC [EGS] control unit.

starting 

By actuation of the ignition in the start position, the ME control unit receives the "tml. 50 signal" from the EIS control unit via the CAN databus. Start control is carried out automatically by the ME control unit (touch start). It actuates the starter relay with a ground signal. The power contact on the starter relay closes and the starter solenoid switch is supplied at "tml. 50" with voltage from "tml. 15 unfused".

Ending start 

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

Once the start operation is initiated, switching off "Terminal 50" (ignition/starter switch) no further influence on the starting procedure.

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