Shown on engine 177.9 in model 205, 253 |
N3/10 | ME-SFI [ME] control unit |
P07.61-3847-76
Shown on engine 177.9 in model 213 |
N3/10 | ME-SFI [ME] control unit |
P01.10-3357-76
Location
In model 205, 253, the ME control unit is located on the front-right of the engine. In model 213, the ME control unit is located on the top-right of the engine.
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 the interface (gateway) between the connected CAN bus systems.
Controlling the engine basic functions
Start
Fuel supply
Injection control
Ignition system
Synchronization of injection and firing order
Start, post-start phase and warm-up enrichment
Engine speed control
Alternator interface
Lambda control
Smooth running control
Heat management
Torque coordination
Inertia fuel shutoff
Knock sensor system
Camshaft adjustment
Engine limp-home mode
European On-Board Diagnosis (EOBD)
ECO start/stop function
Exhaust treatment
Charging
Electronic accelerator
Capturing fueling gases (with code 494 (USA version))
Purge control
Purge system with leak test (with code 494 (USA version))
Reading in of signals
The ME control unit reads the input factors via the following connections:
Direct line
Drive-LIN (LIN C1)
Engine CAN (CAN C)
Drive train CAN (CAN C1)
Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor and the relevant components are then actuated.
Output of signals and actuation of components
The ME control unit transmits the output variables via the following connections:
Direct line
Drive train LIN
Engine CAN
Drive train CAN
Input factor over direct line from | Initial parameter over direct line to | Supplemental information |
Knock sensor 1 (A16/1) | - | - |
Knock sensor 2 (A16/2) | - | - |
Knock sensor 3 (A16/3) | - | - |
Knock sensor 4 (A16/4) | - | - |
- | Fuel tank diagnostic module pump (A101m1) | Model 213 with code 494 (USA version), models 205, 253 with code 494 (USA version), from model year 2016 |
- | Fuel tank diagnostic module heating element (A101r1) | Model 213 with code 494 (USA version), models 205, 253 with code 494 (USA version), from model year 2016 |
- | Fuel tank diagnostic module solenoid valve (A101y1) | Model 213 with code 494 (USA version), models 205, 253 with code 494 (USA version), from model year 2016 |
Engine oil temperature sensor (B1) | - | - |
Fuel tank pressure sensor (B4/3) | - | Model 205 with code 494 (USA version) up to model year 2016 |
Purging pressure sensor (B4/4) | - | Model 205, 253 |
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) | - | - |
Left charge air temperature sensor (B17/14) | - | - |
Right charge air temperature sensor (B17/15) | - | - |
Pressure sensor downstream of air filter, left cylinder bank (B28/4) | - | - |
Pressure sensor downstream of air filter, right cylinder bank (B28/5) | - | - |
Pressure sensor upstream of left throttle valve (B28/20) | - | - |
Pressure sensor upstream of right throttle valve (B28/21) | - | - |
Pressure sensor downstream of left throttle valve (B28/22) | - | - |
Pressure sensor downstream of right throttle valve (B28/23) | - | - |
Accelerator pedal sensor (B37) | - | Model 205, 253 |
Oil sensor (oil level, temperature and quality) (B40) | - | - |
Right fuel pressure and temperature sensor (B42/1) | - | - |
Left fuel pressure and temperature sensor (B42/2) | - | - |
Crankshaft Hall sensor (B70) | - | - |
Left purging pressure sensor (B108/1) | - | Model 213 with code 494 (USA version) |
Right purging pressure sensor (B108/2) | - | Model 213 with code 494 (USA version) |
Left gasoline particulate filter differential pressure sensor (B163/5) | - | Model 213 with code 598 (gasoline particulate filter (OPF) with sensor system) |
Right gasoline particulate filter differential pressure sensor (B163/6) | - | Model 213 with code 598 (gasoline particulate filter (OPF) with sensor system) |
- | Left oxygen sensor heater downstream of CAT (G3/5r1) | - |
Right oxygen sensor element downstream of CAT (G3/6b1) | - | - |
- | Right oxygen sensor heater downstream of CAT (G3/6r1) | - |
Engine compartment circuit 15 relay (K40/8kG) | - | - |
- | Starter circuit 50 relay (K40/8kH) | - |
Circuit 87M relay (K40/8kN) | Circuit 87M relay (K40/8kN) | - |
- | Left exhaust flap actuator motor (M16/53) | Model 205, 253 with code U78 (AMG sport exhaust system) |
- | Right exhaust flap actuator motor (M16/54) | Model 205, 253 with code U78 (AMG sport exhaust system) |
- | Exhaust flap center actuator motor (M16/55) | Model 205, 253 with code U78 (AMG sport exhaust system) |
- | Left throttle valve actuator motor (M16/60m1) | - |
Actual value potentiometer 1, left (M16/60r1) | - | - |
Actual value potentiometer 2, left (M16/60r2) | - | - |
Supplemental Restraint System control unit (N2/10) | - | - |
- | Fuel system control unit (N118) | - |
- | Coolant thermostat heating element(R48) | - |
- | Cylinder 1 ignition coil (T4t1) | - |
- | Cylinder 2 ignition coil (T4t2) | - |
- | Cylinder 3 ignition coil (T4/1t3) | - |
- | Cylinder 4 ignition coil (T4/1t4) | - |
- | Cylinder 5 ignition coil (T4/2t5) | - |
- | Cylinder 6 ignition coil (T4/2t6) | - |
- | Cylinder 7 ignition coil (T4/3t7) | - |
- | Cylinder 8 ignition coil (T4/3t8) | - |
- | Heating system shutoff valve (Y16/2) | - |
- | Left intake camshaft solenoid (Y49/4) | - |
- | Right intake camshaft solenoid (Y49/5) | - |
- | Left exhaust camshaft solenoid (Y49/6) | - |
- | Right exhaust camshaft solenoid (Y49/7) | - |
- | Cylinder 2 intake CAMTRONIC actuator (Y49/11) | Model 213 |
- | Cylinder 2 exhaust CAMTRONIC actuator (Y49/12) | Model 213 |
- | Cylinder 3 intake CAMTRONIC actuator (Y49/13) | Model 213 |
- | Cylinder 3 exhaust CAMTRONIC actuator (Y49/14) | Model 213 |
- | Cylinder 5 intake CAMTRONIC actuator (Y49/15) | Model 213 |
- | Cylinder 5 exhaust CAMTRONIC actuator (Y49/16) | Model 213 |
- | Cylinder 8 intake CAMTRONIC actuator (Y49/17) | Model 213 |
- | Cylinder 8 exhaust CAMTRONIC actuator (Y49/18) | Model 213 |
- | Left purging switchover valve (Y58/11) | - |
- | Right purging switchover valve (Y58/12) | - |
- | Activated charcoal canister shutoff valve (Y58/4) | Model 205 with code 494 (USA version) up to model year 2016 |
- | 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) | - |
- | Left thrust circulating air switchover valve (Y101/1) | - |
- | Right thrust circulating air switchover valve (Y101/2) | - |
- | Engine oil pump valve (Y130) | - |
Input factors via the drive LIN (LIN C1) from | Output factors via the drive LIN (LIN C1) to | Supplemental information |
Alternator (G2) | - | - |
Input factors over engine CAN (CAN C) from | Initial parameters over engine CAN (CAN C) to | Supplemental information |
Instrument cluster (A1) | Instrument cluster (A1) | Via user interface-CAN (CAN HMI), electronic ignition lock control unit (N73), suspension FlexRay (Flex E) and powertrain control unit (N127) |
Audio/COMAND control panel (A40/9) (except code 446 (Touchpad only)) or touchpad (A105) (with code 446 (Touchpad only)) | Audio/COMAND control panel (A40/9) (except code 446 (Touchpad only)) or touchpad (A105) (with code 446 (Touchpad only)) | Via telematics CAN (CAN A), head unit (A26/17), user interface CAN (CAN HMI), electronic ignition lock control unit (N73), chassis FlexRay (Flex E) and powertrain control unit (N127) |
Supplemental Restraint System control unit (N2/10) | - | Via user interface-CAN (CAN HMI), electronic ignition lock control unit (N73), suspension FlexRay (Flex E) and powertrain control unit (N127) |
Front SAM control unit (N10/6) | - | Over the interior CAN (CAN B), electronic ignition lock control unit (N73), suspension FlexRay (Flex E) and powertrain control unit (N127) |
Electronic Stability Program control unit (N30/4) | - | Via suspension FlexRay (Flex E) and powertrain control unit (N127) |
Radar sensors control unit (N62/1) (model 205 with code 23P (Driving assistance package)) | - | Via suspension FlexRay (Flex E), Electronic Stability Program control unit (N30/4) and powertrain control unit (N127) |
Mercedes-Benz Intelligent Drive control unit (N62/4) (model 213 with code 23P (Driving Assistance Package) or with code P20 (Driving Assistance Plus Package)) | - | Via suspension FlexRay (Flex E), Electronic Stability Program control unit (N30/4) and powertrain control unit (N127) |
Left front door control unit (N69/1) | - | Over the interior CAN (CAN B), electronic ignition lock control unit (N73), suspension FlexRay (Flex E) and powertrain control unit (N127) |
Electronic ignition lock control unit (N73) | Electronic ignition lock control unit (N73) | Via suspension FlexRay (Flex E) and powertrain control unit (N127) |
Powertrain control unit (N127) | Powertrain control unit (N127) | - |
Input factors over drive CAN (CAN C1) from | Initial parameters over drive CAN (CAN C1) to | Supplemental information |
Instrument cluster (A1) | Instrument cluster (A1) | Via user interface-CAN (CAN HMI), electronic ignition lock control unit (N73), suspension FlexRay (Flex E) and powertrain control unit (N127) |
Climate control control unit (N22/1) | - | Over the interior CAN (CAN B), electronic ignition lock control unit (N73), suspension FlexRay (Flex E) and powertrain control unit (N127) |
Active engine mount control unit (N3/42) (models 205, 213 with code 466 (Active engine mount)) | Active engine mount control unit (N3/42) (models 205, 213 with code 466 (Active engine mount)) | Via AMG CAN (CAN AMG) and AMG suspension control unit (N3/43) |
AMG suspension control unit (N3/43) (models 205, 213 with code 466 (Active engine mount) or code 467 (Electronic differential lock)) | AMG suspension control unit (N3/43) (models 205, 213 with code 466 (Active engine mount) or code 467 (Electronic differential lock)) | - |
Electronic Stability Program control unit (N30/4) | - | Via suspension FlexRay (Flex E) and powertrain control unit (N127) |
Radar sensors control unit (N62/1) (model 205 with code 23P (Driving assistance package)) | - | Via suspension FlexRay (Flex E), Electronic Stability Program control unit (N30/4) and powertrain control unit (N127) |
Mercedes-Benz Intelligent Drive control unit (N62/4) (model 213 with code 23P (Driving Assistance Package) or with code P20 (Driving Assistance Plus Package)) | - | Via suspension FlexRay (Flex E), Electronic Stability Program control unit (N30/4) and powertrain control unit (N127) |
Steering column tube module control unit (N80) | - | Via suspension FlexRay (Flex E) and powertrain control unit (N127) |
Fuel system control unit (N118) | Fuel system control unit (N118) | - |
Powertrain control unit (N127) | Powertrain control unit (N127) | - |
Fully integrated transmission control unit (Y3/8n4) | Fully integrated transmission control unit (Y3/8n4) | - |
Structure
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.
Voltage supply
The ME control unit is supplied with a power from " circuit 30 secured" and additionally, with "ignition ON", via 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.
Variants
The engine management variants, such as country and exhaust variants, are activated via variant coding. Exchange of the ME-SFI [ME] control unit is not necessary.
ME-SFI [ME] control unit wiring diagram | Engine 177.9 in model 205 up to model year 2019Vehicle sideEngine 177.9 in model 253Vehicle side | ||
Engine 177.9 in model 205 up to model year 2019Engine sideEngine 177.9 in model 253Engine side | |||
Engine 177.9 in model 205 as of model year 2019Vehicle side | |||
Engine 177.9 in model 205 as of model year 2019Engine side | |||
Engine 177.9 in model 213Vehicle side | |||
Engine 177.9 in model 213 |