GF07.61-P-3005MLK ME-SFI Ignition ON, Function

GF07.61-P-3005MLK ME-SFI Ignition ON, Function
- refinement package
- as of model year 09


Function requirements for ignition ON, general points
^ Circuit 15 ON

Ignition ON, general points
For ignition ON, the engine control in the ME-SFI [ME] control (N3/10) is switched on and the engine prepared for starting.

Ignition ON function sequence
When the ignition is switched on, the EIS control unit (N73), through terminal 87 relay and motor (N10/1kR), connects the on-board voltage from "tml. 30" to "tml. 87 M1" and "tml. 87 M2".

If voltage is present at ME-SFI control unit "tml. 87 M1", the engine control is switched on.
"Tml. 87 M2" supplies voltage to the corresponding sensors and actuators of the engine control.

Switching on of the ME-SFI [ME] control unit causes the following functions to be executed:
- For complete security, the fuel pump (M3) is actuated through the fuel pump relay (N10/2kA) (only the first time the ignition is switched ON after the vehicle is unlocked).
- For the lamp check on the instrument cluster (A1), the engine diagnosis indicator lamp (A1e58), or with Code (494) USA version the CHECK ENGINE indicator lamp (A1e26), is actuated by the ME-SFI control unit over the engine compartment CAN (CAN C).
- Data exchange with the EIS control unit (tml. 50 signal and drive authorization).
- The fault memory in the ME-SFI control unit can be read out and deleted over the data link connector (X11/4).
- The throttle valve actuator (M16/6) checks its return spring (via the position of the throttle valve) and may lead to a positioner adaptation.
- Correction programming or diagnosis can be undertaken using DAS via the data link connector.

The following partial functions which are active for ignition ON are described in the following documents:
^ ME fuel supply, function
^ Correction programming, function