GF07.61-P-5001AM Voltage Supply to ME-SFI Control Unit, Function
GF07.61-P-5001AM Voltage Supply to ME-SFI Control Unit, Function
ENGINE 113.990 in MODEL 211, 219
ENGINE 113.991 in MODEL 215, 220
ENGINE 113.992 in MODEL 230 up to Model Year 2008
ENGINE 113.993 in MODEL 463 up to 31.5.12
ENGINE 113.995 in MODEL 230 up to Model Year 2008
0-3 Position of the ignition starter switch
30 Positive battery terminal (circuit 30)
31 Negative battery terminal (circuit 31)
G1 Battery (except model 230)
G1 On-board electrical system battery (model 230)
K40/4kK Motor electronics relay and chassis (model 230)
K40/7kK Motor electronics/chassis relay (models 215, 220)
N3/10 ME control unit
N10/1 Driver-side SAM control unit with fuse and relay module (models 211, 219)
N10/1 Front signal acquisition and actuation module (SAM) (model 463)
N10/1kl Circuit 87 relay, engine (models 211, 219)
N10/1kR Circuit 87 relay, engine (model 463)
N10/7 Right front SAM control unit (model 215, 220)
N10/11 Front passenger SAM control unit (model 230)
N73 EIS [EZS] control unit
W3/1 Ground (right front wheelhouse) (model 463)
W10 Ground (battery) (body)
W15/3 Ground (electronics) (models 211, 219)
W34/1 Ground (electronics - left footwell) (model 230)
W36/1 Ground (right footwell) (models 215, 220)
CAN Data bus (Controller Area Network)
The ME control unit features a short-circuit protection as well as a reversed polarity protection in the operating voltage section.
In certain cases voltage is supplied through several pins connected in parallel by means of bridges to relief the electrical connectors.
Ground connection
Several ground connections for the ME-SFI [ME] control unit, the ignition output stage and the motor electronics are mounted close to the ME-SFI [ME] control unit on the body.
Voltage supply of ME-SFI control unit
The ME-SFI [ME] control unit (N3/10) is supplied with voltage directly from the battery on-board electrical system battery "unfused".
Engine control voltage supply
If the transmitted signal "circuit 15 secured ON" from the EIS [EZS] control unit (N73) via the CAN data bus from:
Models 211, 219 Driver-side SAM control unit with fuse and relay module (N10/1)
Model 215, 220 Right front SAM control unit (N10/7N10/)
Model 230 right SAM control unit (N10/11)
Model 463 Front signal acquisition and actuation module (SAM) (N10/1)
read in, if the engine main relay:
Models 211, 219 Terminal 87 relay, engine (N10/1kI)
Model 215, 220 Motor electronics/chassis relay (K40/7kK)
Model 230 Engine electronics and chassis relay (K40/4kK)
Model 463 Circuit 87 relay, engine (N10/1kR)
is actuated with a ground signal and closes the power contact.
Once the engine main relay has closed the power contact, the voltage is relayed by it from "circuit 30" (to the appropriate fuses) as "circuit 87" to the ME-SFI [ME] control unit and the engine control is switched on.
Cutting out the engine control
If the corresponding ME-SFI [ME] control unit receives the signal "circuit 15 fused off" from the EIS control unit, delayed-off running of the processor (approx. 30 to 150 seconds) is started.
Once the delayed-off running is ended, the motor main relay is switched off and the engine control is thus isolated from the on-board electrical system.
System tests are conducted by the ME-SFI [ME] control unit during the computer run-on and the fault memory is updated.
