ML 63 AMG (164.177) V8-6.3L (156.980) (2007)
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If signal "terminal 15 ON" sent from EIS [EZS] control unit via the CAN data bus is read in by the ME-SFI [ME] control unit, the engine main relay
(engine circuit 87 relay) with a ground signal. The engine main relay closes its power contact and the voltage from "terminal 30" is transmitted according
to corresponding fuses, such as "circuit. 87 M" to the ME-SFI [ME] control unit. For this reason the engine control switches on and an output stage
driver in the ME-SFI [ME] control unit takes on further actuation of the engine main relay.
In certain cases voltage is supplied through several pins connected in parallel by means of bridges to relief the electrical connectors.
Cutting out the engine control
If ME-SFI [ME] control unit receives the signal "terminal 15 OFF" from EIS [EZS] control unit computer run-on is started (dependent on the coolant
temperature between 5 and 150 s). Once the processor run on is complete, the engine main relay is switched off and engine control is thus isolated from
the electrical system.
System tests are conducted by the ME-SFI [ME] control unit during the computer run-on and the fault memory is updated.
Ground connection
Several ground connections (terminal 31) for the ME-SFI [ME] control unit, the ignition output stages and the motor electronics are fitted to the body
close to the ME-SFI [ME] control unit.
GF07.61-P-6000AMG Component Description For the ME-SFI [ME] Control Unit
GF07.61-P-6000AMG Component Description For the ME-SFI [ME] Control Unit
The ME-SFI [ME] control unit is located behind the front right wheelhouse, between the fender and side wall.
The ME-SFI [ME] control unit is located at the rear left in the engine compartment.
