(Component Description For ME-SFI (ME) Control Unit - GF07.61-P-6000MMR)
Engine 157.9, 278.9 in MODEL 166
up to model year 2016
View of Engine from the front
Location
The ME-SFI [ME] control unit is located at the center on the charge air distributor.
Tasks
The ME-SFI [ME] control unit fulfills the following tasks:
- Controlling the Engine basic functions
- Reading in of 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
- Diagnosis and fault storage
- Injection control
- Electronic accelerator
- Drive authorization system and immobilizer
- Alternator interface
- Regulated camshaft adjustment
- Fuel supply
- Torque interface
- ECO start-stop function (for code (B03) ECO start-stop function)
- Heat management
- Ignition system
Reading in of 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)
Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor and the affected components are then actuated.
Output of signals and actuation of components
Initial parameter are output over the following connections:
- Direct line
- Drive-LIN (LIN C1)
- Drive train CAN (CAN C)
- Chassis CAN 1 (CAN E1)
The electronic ignition lock control unit (N73) is the central interface (Gateway) for exchanging the function-relevant data of the control units that are connected to the various 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 87 (M4) | - | - |
| Knock sensor 1 (A16/1) | - | - |
| Knock sensor 2 (A16/2) | - | - |
| Knock sensor 3 (A16/3) | - | - |
| Knock sensor 4 (A316/4) | - | - |
| Fuel tank pressure sensor (B4/3) | - | With CODE 494 (USA version) |
| Fuel pressure and temperature sensor (B4/25) | - | - |
| Left intake camshaft Hall sensor (B6/4) | - | - |
| Right intake camshaft Hall sensor (B6/5) | - | - |
| Left exhaust camshaft Hall sensor (B6/6) | - | - |
| Right exhaust camshaft Hall sensor (B6/7) | - | - |
| Coolant temperature sensor (B11/4) | - | - |
| Charge air temperature sensor (B17/8) | - | - |
| Pressure sensor downstream of left cylinder bank air filter (B28/4) | - | - |
| Pressure sensor downstream of right cylinder bank 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) | - | - |
| - | Starter circuit 50 relay (F58kM) | - |
| Circuit 87 M relay (F58kN) | Circuit 87 M relay (F58kN) | - |
| - | Turbocharger relay (F58kO) | - |
| Circuit 15 relay (F58kR) | - | - |
| Left oxygen sensor upstream of catalytic converter (G3/3) | Left oxygen sensor upstream of catalytic converter (G3/3) | - |
| Right oxygen sensor upstream of catalytic converter (G3/4) | Right oxygen sensor upstream of catalytic converter (G3/4) | - |
| Left oxygen sensor downstream of catalytic converter (G3/5) | Left oxygen sensor downstream of catalytic converter (G3/5) | - |
| Right oxygen sensor downstream of catalytic converter (G3/6), | Right oxygen sensor downstream of catalytic converter (G3/6), | - |
| - | Fan motor (M4/7) | - |
| Throttle valve actuator (M16/6) | Throttle valve actuator (M16/6) | - |
| Supplemental Restraint System control unit (N2/10) | - | - |
| Oil level check switch (S43) | - | - |
| - | Fuel system control unit (N118) | - |
| - | Coolant thermostat heating element (R48) | - |
| - | Cylinder 1 ignition coil (T1/1) | - |
| - | Cylinder 2 ignition coil (T1/2) | - |
| - | Cylinder 3 ignition coil (T1/3) | - |
| - | Cylinder 4 ignition coil (T1/4) | - |
| - | Cylinder 5 ignition coil (T1/5) | - |
| - | Cylinder 6 ignition coil (T1/6) | - |
| - | Cylinder 7 ignition coil (T1/7) | - |
| - | Cylinder 8 ignition coil (T1/8) | - |
| - | Left intake camshaft solenoid (Y49/4) | - |
| - | Right intake camshaft solenoid (Y49/5) | - |
| - | Left exhaust camshaft solenoid (Y49/6) | - |
| - | Right exhaust camshaft solenoid (Y49/7) | - |
| - | Purging switchover valve (Y58/1) | - |
| - | Activated charcoal canister shutoff valve (Y58/4) | With CODE 494 (USA version) |
| - | Cylinder 1 fuel injector (Y76/1) | - |
| - | Cylinder 2 fuel injector (Y76/2) | - |
| - | Cylinder 3 fuel injector (Y76/3) | - |
| - | Cylinder 4 fuel injector (Y76/4) | - |
| - | Cylinder 5 fuel injector (Y76/5) | - |
| - | Cylinder 6 fuel injector (Y76/6) | - |
| - | Cylinder 7 fuel injector (Y76/7) | - |
| - | Cylinder 8 fuel injector (Y76/8) | - |
| - | Boost pressure control pressure transducer (Y77/1) | - |
| - | Left quantity control valve (Y94/1) | |
| - | Right quantity control valve (Y94/2) | - |
| - | Engine oil pump valve (Y130) | - |
| - | High-temperature/low-temperature circuit switchover valve (Y137) | - |
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) | - |
| Oil sensor (oil level, temperature and quality) (B40) | - | With Engine 157 |
| Input factors via the drive train CAN (CAN C) | Initial parameter via the drive train CAN (CAN C) | Supplemental information |
|---|---|---|
| Fuel system control unit (N118) | Fuel system control unit (N118) | - |
| Fully integrated transmission control controller unit (Y3/8) | Fully integrated transmission control controller unit (Y3/8) | - |
| 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 electronic ignition lock control unit (N73) |
| Supplemental Restraint System control unit (N2/10) | - | - |
| SAM control unit (N10) | - | via interior CAN (CAN B) and electronic ignition lock control unit (N73) |
| AAC control and operating unit (N22/7) | - | via interior CAN (CAN B) and electronic ignition lock control unit (N73) |
| Electronic Stability Program control unit (N30/4) | - | - |
| AIRMATIC control unit (N51/3) (for code 489 (AIRMATIC (Air suspension with level adjustment and Adaptive Damping System ADS))) | AIRMATIC control unit (N51/3) (for code 489 (AIRMATIC (Air suspension with level adjustment and Adaptive Damping System ADS))) | - |
| Video and radar sensor system control unit (N62/2) (for code 233 (DISTRONIC PLUS, for code 237 (Active Blind Spot Assist), for code 238 Active Lane Keeping Assist)) | Video and radar sensor system control unit (N62/2) (for code 233 (DISTRONIC PLUS, for code 237 (Active Blind Spot Assist), for code 238 Active Lane Keeping Assist)) | - |
| Left front door control unit (N69/1) | - | via interior CAN (CAN B) and electronic ignition lock control unit (N73) |
| Upper control panel control unit (N72/1) | - | over the battery sensor LINE (LINE B15) to the SAM control unit (N10) and via the interior CAN (CAN B) and electronic ignition lock control unit (N73) |
| Electronic ignition lock control unit (N73) | Electronic ignition lock control unit (N73) | - |
| Steering column tube module control unit (N80) | - | - |
| Diagnostic connector (X11/4) | Diagnostic connector (X11/4) | via diagnostic CAN (CAN D) and the electronic ignition lock control unit (N73) |
Body
The ME-SFI [ME] control unit housing is made out of die cast 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.
Ground connection
The ground connection "circuit 31" is made over a number of ground lines to the front right ground point for lamp unit (W2).
Voltage 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 control 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.
Information for partial function "no-load current shutoff" 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 plug, sheet 1 | PE07.08-P-2101-97NAD | |
| N3/10 Engine plug, sheet 2 | PE07.08-P-2101-97NAE | ||
| N3/10 Vehicle connector | PE07.08-P-2101-97NAF |