Component description for ME-SFI (ME) control unit - GF07.61-P-6000MRB
ENGINE 274.9 in MODEL 207, 218
ENGINE 274.9 in MODEL 212 without CODE 924 (Bivalent natural gas drive)
Engine viewed from front (for code 920 (Gasoline direct injection with stratified charge, except code 924 (bivalent natural gas drive))
Location
The ME-SFI [ME] control unit is located on the left on the air filter housing.
Task
The ME-SFI [ME] control unit fulfills the following tasks:
- Controlling the engine basic functions
- Reading in of sensors and signals
- Evaluation of input factors
- Output of signals and actuation of components
The ME-SFI [ME] control unit also acts as an interface (Gateway) between the attached CAN bus systems.
Controlling the engine basic functions
- Exhaust treatment
- Exhaust gas recirculation (with NOx catalytic converter) (for code 920 (Gasoline direct injection with stratified charge))
- Diagnosis and fault storage
- Electronic accelerator
- Drive authorization system and immobilizer
- Alternator interface
- Regulated camshaft adjustment
- Fuel high-pressure direct injection
- Fuel supply
- Boost pressure control
- Torque interface
- Engine management Start-Stop function
- Thermal management
- Ignition system
Reading in of sensors and signals
Input factors are read in over the following connections:
- Direct line
- Drive-LIN (LIN C1)
- Drive train CAN (CAN C)
- Chassis CAN 1 (CAN E1)
- Drive train sensor CAN (CAN I) (for code 920 (Gasoline direct injection with stratified charge))
Evaluation of input factors
The input factors that have been read in are evaluated by the integral microprocessor, and the relevant components are actuated.
Output of signals and actuation of components
Initial parameter are output over the following connections:
- Direct line
- Drive train LIN
- Drive train CAN
- Chassis CAN 1
- Drive train sensor CAN (for code 920 (Gasoline direct injection with stratified charge))
The front SAM control unit with fuse and relay module (N10/1) is the central interface (Gateway) for exchange of function-relevant data for control units which are connected to the various Control Area Network (CAN) bus systems.
Input factors and initial parameters for the following components are read in or output over direct lines by the ME-SFI [ME] control unit and are needed by the engine management
| Input factors over a direct line | Initial parameters over a direct line | Supplemental information |
|---|---|---|
| Terminal 15 | - | - |
| Circuit 30 (fused) | - | - |
| Circuit 31 | - | - |
| Circuit 87M4 | - | - |
| Rear knock sensor (A161) | - | - |
| Front knock sensor (A16/4) | - | - |
| Hot film MAF sensor (B2/5) | - | For code 920 (Gasoline direct injection with stratified charge) |
| Fuel pressure and temperature sensor (B4/25) | - | - |
| Exhaust gas recirculation pressure sensor 1 (B5/5) | - | For code 920 (Gasoline direct injection with stratified charge) |
| Exhaust gas recirculation pressure sensor 2 (B5/6) | - | For code 920 (Gasoline direct injection with stratified charge) |
| Intake camshaft Hall sensor (B6/15) | - | - |
| Exhaust camshaft Hall sensor (B6/16) | - | - |
| Coolant temperature sensor (model 207, 212) or coolant temperature sensor (model 218) (B11/4) | - | - |
| Temperature sensor upstream of NOx storage catalytic converter (B162) | - | For code 920 (Gasoline direct injection with stratified charge) |
| Charge air temperature sensor upstream of throttle valve (B17/7) | - | - |
| Charge air temperature sensor downstream of throttle valve (B17/9) | - | - |
| Pressure sensor downstream of air filter (B28/5) | - | - |
| Pressure sensor upstream of throttle valve (B28/6) | - | - |
| Pressure sensor downstream of throttle valve (B28/7) | - | - |
| Accelerator pedal sensor (B37) | - | - |
| Crankshaft Hall sensor (B70) | - | - |
| Transmission neutral position sensor (B79/2) | - | with manual transmission |
| Alternator (G1) | - | - |
| Oxygen sensor element downstream of catalytic converter (G3/1b1) | - | - |
| - | Oxygen sensor heater downstream of catalytic converter (G3/1r1) | - |
| Oxygen sensor element upstream of catalytic converter (G3/2b1) | - | - |
| - | Oxygen sensor heater upstream of catalytic converter (G3/2r1) | - |
| Internal combustion engine fan motor and air conditioning with integrated control (M4/7) | Internal combustion engine fan motor and air conditioning with integrated control (M4/7) | - |
| - | Actuator motor (M16/6m1), throttle valve | - |
| Actual value potentiometer 1 (M16/6r1), throttle valve | - | - |
| Actual value potentiometer 2 (M16/6r2), throttle valve | - | - |
| Supplemental Restraint System control unit (N2/10) | - | - |
| Circuit 15 relay (N10/1kJ) | - | - |
| - | Starter circuit 50 relay (N10/1kJ) | - |
| Engine circuit 87 relay (N10/1kJ) | Engine circuit 87 relay (N10/1kJ) | - |
| - | Fuel system control unit (N118) | - |
| - | Wide open throttle operation vent line heater element (R39/2) | - |
| - | Coolant thermostat heating element(R48) | - |
| Clutch pedal switch (S40/3) | - | with manual transmission |
| Start enable clutch pedal switch (S40/5) | - | with manual transmission |
| Oil level check switch (S43) | - | - |
| - | Cylinder 1 ignition coil (T1/1) | - |
| - | Cylinder 2 ignition coil (T1/2) | - |
| - | Cylinder 3 ignition coil (T1/3) | - |
| - | Cylinder 4 ignition coil (T1/4) | - |
| Exhaust gas recirculation valve Hall sensor (Y27/1b1) | - | For code 920 (Gasoline direct injection with stratified charge) |
| - | Exhaust gas recirculation valve rotating solenoid (Y27/1y1) | For code 920 (Gasoline direct injection with stratified charge) |
| - | Boost pressure control pressure transducer (Y31/5) | - |
| - | Intake camshaft solenoid (Y49/1) | - |
| - | Exhaust camshaft solenoid (Y49/2) | - |
| - | Purging switchover valve (Y58/1) | - |
| - | Partial load operation crankcase ventilation system valve (Y58/2) | - |
| - | Cylinder 1 fuel injector (Y76/1) | - |
| - | Cylinder 2 fuel injector (Y76/2) | - |
| - | Cylinder 3 fuel injector (Y76/3) | - |
| - | Cylinder 4 fuel injector (Y76/4) | - |
| - | Radiator shutters actuator (Y84) | - |
| - | Quantity control valve (Y94) | - |
| - | Deceleration air switchover valve (Y101) | - |
| - | Engine oil pump valve (Y130) | - |
| - | Coolant pump switchover valve (Y133) | - |
Input parameters and initial parameters for the following components and control units are transmitted or received by the ME-SFI [ME] or CDI control unit via the LIN or CAN and are needed by the engine management system:
| Input factors via the drive-LIN (LIN C1) | Initial parameters via the drive-LIN (LIN C1) | Supplemental information |
|---|---|---|
| Alternator (G2) | Alternator (G2) | - |
| Input factors via the drive train CAN (CAN C) | Initial parameter via the drive train CAN (CAN C) | Supplemental information |
|---|---|---|
| Fully integrated transmission control unit (Y3/8n4) | Fully integrated transmission control unit (Y3/8n4) | - |
| Fuel system control unit (N118) | Fuel system control unit (N118) | - |
| Input factors via chassis CAN 1 (CAN E1) | Initial parameters via chassis CAN 1 (CAN E1) | Supplemental information |
|---|---|---|
| Instrument cluster (A1) | Instrument cluster (A1) | Via chassis CAN 2 (CAN E2) and front SAM control unit with fuse and relay module (N10/1) |
| Supplemental Restraint System control unit (N2/10) | - | - |
| Front SAM control unit with fuse and relay module (N10/1) | - | - |
| Rear SAM control unit with fuse and relay module (N10/2) | - | Via interior CAN (CAN B) and front SAM control unit with fuse and relay module (N10/1) |
| AAC control and operating unit (N22/7) | - | Via interior CAN (CAN B) and front SAM control unit with fuse and relay module (N10/1) |
| Electronic Stability Program control unit (N30/4) (except code 233 (DISTRONIC PLUS)) or Electronic Stability Program Premium control unit (N30/7) (for code (233) DISTRONIC PLUS)) | - | - |
| AIRmatic control unit (N51/3) (model 212, 218 with code 489 (AIRMATIC (Air suspension with continuous adjustment damping))) | - | - |
| Adaptive damping system control unit (N51/5) (model 207 with code 483 (ADVANCED AGILITY package)) | - | - |
| Radar sensors control unit (N62/1) (for code 23P (Driving assistance package PLUS)) | - | Via chassis FlexRay (Flex E) and chassis gateway control unit (N93/7) |
| Left front door control unit (N69/1) | - | Via interior CAN (CAN B) and front SAM control unit with fuse and relay module (N10/1) |
| Upper control panel control unit (N72/1) | - | Via instrument panel LIN (LIN 1) and front SAM control unit with fuse and relay module (N10/1) |
| Electronic ignition lock control unit (N73) | Electronic ignition lock control unit (N73) | - |
| Steering column tube module control unit (N80) | - | - |
| Rear axle electronic level regulation control unit (N97) (model 212.2 except code 489 (AIRmatic (Air suspension with continuous adjustment damping))) | - | - |
| Diagnostic connector (X11/4) | - | Via diagnostic CAN (CAN D) and front SAM control unit with fuse and relay module (N10/1) |
| Input factors via drive train sensor CAN (CAN I) | Initial parameters via drive train sensor CAN (CAN I) | Supplemental information |
|---|---|---|
| NOx sensor control unit (N37/4) | NOx sensor control unit (N37/4) | For code 920 (Gasoline direct injection with stratified charge) |
Body
The ME-SFI [ME] control unit housing is made out of diecast aluminum and the cover is made out corrosion-protected sheet steel. The ME-SFI [ME] control unit is water and dust protected.
The inside contains the 32-bit measuring and control electronics for the engine management.
Power supply
The ME-SFI [ME] control unit is supplied with a voltage from "circuit 30 secured" and also for ignition ON from "circuit 87 M4".
In the operating voltage range it has both short-circuit protection and reversed polarity protection.
Power is supplied through several engaged parallel pins connected in parallel to relieve the electrical connections.
Ground connection
The "circuit 31" ground connection is made via several ground lines to the left major assembly compartment electronics ground point (W16/5).
Information about the partial function "no-load current switch off" is documented in the function description "engine OFF energy management function".
Variants
The variants of the engine management, for exampled country and exhaust variants, are activated with XD over the variant coding.
Exchange of the ME-SFI [ME] control unit is not necessary.
| Wiring diagram for gasoline-DI control unit | N3/10 Engine side model 207 | PE07.08-P-2101-97EAJ | |
| N3/10 Body side model 207 | PE07.08-P-2101-97EAK | ||
| N3/10 engine connector model 212 | PE07.08-P-2101-97DAL | ||
| N3/10 vehicle connector model 212 | PE07.08-P-2101-97DAN | ||
| N3/10 engine connector model 218 | PE07.08-P-2101-97XAI | ||
| N3/10 vehicle connector model 218 | PE07.08-P-2101-97XAJ |