GF07.61-P-3006MAR ME-SFI Ignition OFF, Function

GF07.61-P-3006MAR ME-SFI Ignition OFF, Function
- refinement package
- as of model year 09


Function requirements ignition OFF, general points
^ Circuit 87M ON (engine control ON)
^ Circuit 15 OFF

Ignition OFF, general points
For ignition OFF, first the engine and then the engine control is switched off in the ME-SFI [ME] control unit (N3/10).

Ignition OFF function sequence
If the ME-SFI control unit (N3/10) receives the "tml. 15 OFF" signal through tml. 15 relay (K40/2kB), the engine is switched off by switching off the fuel injection valves (Y62) and ignition coils (T1), and computer power-down is started.

Computer power-down is determined by the ME-SFI [ME] control unit and lasts about 5 s. It can, however, last for some minutes due to various functions (such as OBD, DAS 3, thermal management).
When computer power-down is completed, the ME-SFI and chassis relay (K40/4kK) is switched off and the engine control is disconnected from the on-board electrical system (switched off).

System tests are conducted by the ME-SFI [ME] control unit during the computer run-on and the fault memory is updated.

The following subfunction is described in the following document:
^ Refueling gas recovery function (with code (494) USA version)