Component description for ME-SFI (ME) control unit - GF07.61-P-6000MMO
ENGINE 276.9 in MODEL 212.095
View of the engine from the front
Location
The ME-SFI [ME] control unit is located on the right on engine.
Task
The ME-SFI control unit fulfills the following tasks:
- Controlling the basic engine 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 the interface (gateway) between the connected CAN bus systems.
Controlling the basic engine functions
- Exhaust treatment
- Diagnosis and fault storage
- Injection control
- Electronic accelerator
- Drive authorization system and immobilizer
- Regulated camshaft adjustment
- Fuel supply
- Torque interface
- Engine timing, start/stop function
- Intake manifold switchover
- Thermal management
- Ignition system
Reading in of sensors and signals
Input factors are read in by means of the following connections:
- Direct line
- Drive train LIN (LIN C1)
- Drive train CAN (CAN C)
- Chassis CAN (CAN E) (up to model year 2014), chassis CAN 1 (CAN E1) (as of model year 2014)
- Hybrid CAN (CAN L)
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 train LIN
- Drive train CAN
- Chassis CAN (up to model year 2014), chassis CAN 1 (as of model year. 2014)
- Hybrid CAN
The front SAM control unit with fuse and relay module (N10/1) is the central interface (Gateway) for exchange of function-relevant data between the 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 timing:
| Input factors over the direct line | Initial parameters over the direct line | Supplemental information |
|---|---|---|
| Terminal 15 | - | - |
| Circuit 30 (fused) | - | - |
| Circuit 31 | - | - |
| Circuit 87M4 | - | - |
| RH knock sensor (A16/1) | - | - |
| LH knock sensor (A16/2) | - | - |
| - | Fuel tank diagnostic module pump (A101m1) | With code (494) USA version |
| - | Fuel tank diagnostic module heating element (A101r1) | With code (494) USA version |
| - | Fuel tank diagnostic module solenoid valve (A101y1) | With code (494) USA version |
| Fuel pressure and temperature sensor (B4/25) | - | - |
| 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) | - | - |
| Intake air temperature sensor (B17) | - | - |
| Intake manifold intake air temperature sensor (B17/1) | - | - |
| Pressure sensor downstream of throttle valve (B28/7) | - | - |
| Accelerator pedal sensor (B37) | - | - |
| Crankshaft Hall sensor (B70) | - | - |
| LH oxygen sensor element upstream of catalytic converter (G3/3b1) | - | - |
| - | Left oxygen sensor heater upstream of catalytic converter (G3/3r1) | - |
| Right oxygen sensor element upstream of catalytic converter (G34/b1) | - | - |
| - | Right oxygen sensor heater upstream of catalytic converter (G3/4r1) | - |
| Left oxygen sensor element downstream of catalytic converter (G3/5b1) | - | - |
| - | Left oxygen sensor heater downstream of catalytic converter (G3/5r1) | - |
| Right oxygen sensor element downstream of catalytic converter (G3/6b1) | - | - |
| - | Right oxygen sensor heater downstream of catalytic converter (G3/6r1) | - |
| 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) | - |
| Actual value potentiometer 1 (M16/6r1), throttle valve | - | - |
| Actual value potentiometer 2 (M16/6r2), throttle valve | - | - |
| - | Actuator motor (M16/6m1), throttle valve | - |
| Supplemental restraint system control unit (N2/10) | - | - |
| Circuit 15 relay (N10/1kJ) | - | - |
| - | Circuit 50 starter relay (N10/1kM) | - |
| - | Engine circuit 87 relay (N10/1kN) | - |
| 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) | - |
| - | 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) | - |
| - | 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) | - |
| - | Intake manifold resonance flap switchover valve (Y77/2) | - |
| - | Intake manifold selector drum switchover valve (Y77/3) | - |
| - | Radiator shutters actuator (Y84) | |
| - | Quantity control valve (Y94) | - |
| - | Engine oil pump valve (Y130) | - |
Input factors and initial parameters for the following components and control units are transmitted or received over the LIN or CAN by the ME-SFI [ME] control unit and are required by the engine timing:
| Input factors via the drive train LIN (LIN C1) | Initial parameters via the drive train LIN (LIN C1) | Supplemental information |
|---|---|---|
| Radiator sensor for engine diagnosis (B11/15) | Radiator sensor for engine diagnosis (B11/15) | for code (494) USA version and for code (917) Partial zero emission vehicle emission USA |
| Input factors via drive train CAN (CAN C) | Initial parameters via drive train CAN (CAN C) | Supplemental information |
|---|---|---|
| Fuel system control unit (N118) | Fuel system control unit (N118) | - |
| Fully integrated transmission control unit (Y3/8n4) | Fully integrated transmission control unit (Y3/8n4) | - |
| Input factors via chassis CAN (CAN E) up to model year 2014 | Initial parameters via chassis CAN (CAN E) up to model year 2014 | Supplemental information |
|---|---|---|
| Instrument cluster (A1) | Instrument cluster (A1) | - |
| Supplemental restraint system control unit (N2/10) | - | - |
| 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) |
| Regenerative braking system control unit (N30/6) | - | - |
| Video and radar sensor system control unit (N62/2) (for code (233) DISTRONIC PLUS, code (237) Active Blind Spot Assist and code (238) Active Lane Keeping Assist) | - | - |
| Left front door control unit (N69/1) | - | Via interior CAN (CAN B) and front SAM control unit with fuse and relay module (N10/1) |
| Electronic ignition lock control unit (N73) | Electronic ignition lock control unit (N73) | - |
| Diagnostic connector (X11/4) | Diagnostic connector (X11/4) | Via diagnostic CAN (CAN D) and front SAM control unit with fuse and relay module (N10/1) |
| Input factors via chassis CAN 1 (CAN E1) as of model year 2014 | Initial parameters via chassis CAN 1 (CAN E1) as of model year 2014 | Supplemental information |
|---|---|---|
| Instrument cluster (A1) | Instrument cluster (A1) | Via interior CAN (CAN B) and front SAM control unit with fuse and relay module (N10/1) |
| Supplemental restraint system control unit (N2/10) | - | - |
| 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) |
| Regenerative braking system control unit (N30/6) | - | - |
| Video and radar sensor system control unit (N62/2) (for code (233) DISTRONIC PLUS, code (237) Active Blind Spot Assist and code (238) Active Lane Keeping Assist) | - | - |
| Left front door control unit (N69/1) | - | Via interior CAN (CAN B) and front SAM control unit with fuse and relay module (N10/1) |
| Electronic ignition lock control unit (N73) | Electronic ignition lock control unit (N73) | - |
| Diagnostic connector (X11/4) | Diagnostic connector (X11/4) | Via diagnostic CAN (CAN D) and front SAM control unit with fuse and relay module (N10/1) |
| Input factors via hybrid CAN (CAN L) | Initial parameters via hybrid CAN (CAN L) | Supplemental information |
|---|---|---|
| Battery management system control unit (N82/2) | - | - |
| Power electronics control unit (N129/1) | Power electronics control unit (N129/1) | - |
Body
The housing of the ME-SFI [ME] control unit is made out of diecast aluminum and the cover is made out of corrosion-proof sheet steel. The ME-SFI [ME] control unit is protected against water and dust. The housing contains the 32-bit measuring and control electronics for the engine timing.
Power supply
The ME-SFI [ME] control unit is "circuit 30 fused" and also supplied with a voltage for ignition ON by "circuit 87 "M4.
In the operating voltage range it has both short-circuit protection and reversed polarity protection.
Power is supplied through several pins connected in parallel to relieve the connectors.
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 for partial function "no-load current shutoff" is documented in the function description "Engine OFF energy management function".
Variants
The engine timing variants (e.g. national and exhaust variants) are activated with Xentry Diagnostics using the variant coding function.
Replacement of the ME-SFI [ME] control unit is not necessary.
| Designation | Unit | Values | Tolerance range | Remarks |
|---|---|---|---|---|
| ME-SFI [ME] control unit (N3/10) | ||||
| Power supply | V | 12.0 | ||
| Voltage limit: | V | 8.0 | ||
| Minimum Maximum |
V | 19.0 | ||
| Power consumption: no-load current: | μA | 1000 | Maximum | |
| μA | 700 | Typical | ||
| Reverse polarity protection | Yes | |||
| Short-circuit resistance | ||||
| Additional specific parameters | No | |||
| Flash capability/coding capability | Yes/yes | |||
| Special features | No | |||
| Right knock sensor (A16/1), LH knock sensor (A16/2) |
||||
| Model | Capacitive sensor (piezo crystal) | |||
| Capacitance | pF | 1050 | ±23.8% | |
| Sensitivity | mV/g | 26 | ±30.8% | |
| Resistor | MΩ | >10 | ||
| Linearity | kHz | 3 - 20 | ||
| Operating temperature | °C | -40 - 150 | ||
| Diagnostic module for fuel tank (A101) (for code (494) USA version) Fuel tank diagnostic module pump (A101m1), fuel tank diagnostic module heating element (A101r1), fuel tank diagnostic module solenoid valve (A101y1) |
||||
| Model | Diagnostic module with integral pump, heating element and solenoid valve | |||
| Supply voltage | V | 10 - 16 | ||
| Pump power consumption | mA | 25 | ||
| Pump operating pressure | hPa | 30 | ||
| Pump power consumption | mA | 12 - 35 | ||
| Pump resistance | Ω | 118 | ||
| Heating element power consumption | mA | 300 | ||
| Solenoid valve resistance | Ω | 29, 5 | ±10% | |
| Solenoid valve power consumption | mA | 380 | ||
| Solenoid valve frequency | Hz | 150 | ||
| Fuel pressure and temperature sensor (B4/25) | ||||
| Model | Combined pressure and temperature sensor | |||
| Supply voltage | V | 5.0 | ±5% | |
| Power consumption | mA | 15 | Maximum | |
| Operating pressure | MPa | 28 | Maximum | |
| Bursting pressure | MPa | 250 | ||
| Pressure measuring range | MPa | 0 - 30 | ||
| Temperature measurement range | °C | -40 - 140 | ||
| Ambient temperature | °C | -40 - 130 | ||
| Series resistor | __________kΩ | 3 | ||
| Resistor | __________kΩ | 30 | at 25°C | |
| Special features | 4-pin connector | |||
| 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) |
||||
| Model | Hall sensor | |||
| Supply voltage: | V | 4.7 - 18 | B6/5, B6/7 | |
| Circuit 87M1 Circuit 87M3 |
V | 4.7 - 18 | B6/4, B6/6 | |
| Maximum power consumption | mA | < 10 | ||
| Output voltage | V | 0 - 18 | ||
| Output current | mA | 0 - 20 | ||
| Coolant temperature sensor (B11/4) | ||||
| Model | NTC resistor (NTC = Negative Temperature Coefficient) | |||
| Supply voltage | V | 5.0 | ±5% | |
| Series resistor | Ω | 1470 | ±1% | |
| Resistance at: 20°C | Ω | 3117 | ||
| 40°C | Ω | 1332 | ||
| 60°C | Ω | 628 | ||
| 80°C | Ω | 320 | ||
| 100°C | Ω | 175 | ||
| 120°C | Ω | 101 | ||
| Special features | Arbitrary polarity | |||
| Cooler sensor for engine diagnosis (B11/15) (with code (494) USA version and code (917) Partial zero emission vehicle emission USA) | ||||
| Model | ||||
| Supply voltage | V | 12 | Terminal 87 | |
| Interface transfer rate: Maximum | kbit/s | 20 | Communication with the ME-SFI [ME] control unit via the drive train LIN | |
| Special features | 3-pin connector | |||
| Intake air temperature sensor (B17) Intake manifold intake air temperature sensor (B17/1) |
||||
| Model | NTC resistor (NTC = Negative Temperature Coefficient) | |||
| Supply voltage | V | 5.0 | ±5% | |
| Series resistor | Ω | 1780 | ±1% | |
| Resistance: -20°C | Ω | 47809 | ||
| 0°C | Ω | 15751 | ||
| 20°C | Ω | 5869 | ||
| 40°C | Ω | 2469 | ||
| 60°C | Ω | 1164 | ||
| Special features | Arbitrary polarity | |||
| Pressure sensor downstream of throttle valve (B28/7) | ||||
| Model | Pressure sensor | |||
| Supply voltage | V | 5.0 | ±0.25 V | |
| Output voltage | V | 0.3 - 4.7 | For a 5 V supply voltage | |
| Power consumption | mA | 10 | Maximum | |
| Output current | mA | ±1 | ||
| Measuring range | kPa | 10 - 250 | Absolute pressure | |
| Signal plausibility | V | 0.10 - 4.94 | ||
| Operating temperature | °C | -40 - 135 | ||
| Accelerator pedal sensor (B37) | ||||
| Model | 2 Hall sensors | |||
| Supply voltage | V | 5.0 | ±0.5 V | |
| Power consumption | mA | 8.5 | ±2.5 mA | |
| Signal current | μA | ≤50 | ||
| Linearity | % | ±1 | Both Hall sensors | |
| Temperature range | °C | -40 - 80 | ||
| Special features | Direct contacting over a 6-pin connector | |||
| Crankshaft Hall sensor (B70) | ||||
| Model | Hall sensor | |||
| Supply voltage | V | 5.0 | ±0.25 V | |
| Power consumption | mA | 12 | Maximum of 15 mA | |
| Output voltage | V | 0 - 5.25 | ||
| Output current | mA | ≤0.25 | ||
| Distance to increment wheel | mm | 0.8 | ±0.5 mm | |
| Special features | Depending in the direction of rotation | |||
| Oxygen sensor upstream of catalytic converter (G3/3) consisting of: Left oxygen sensor element upstream of catalytic converter (G3/3b1), left oxygen sensor heater upstream of catalytic converter (G3/3r1) Right oxygen sensor upstream of catalytic converter (G3/4) consisting of: right oxygen sensor element upstream of catalytic converter (G3/4b1), right oxygen sensor heater upstream of catalytic converter (G3/4r1) |
||||
| Model | Wideband oxygen sensor (LSU 4.9) | |||
| Supply voltage | V | 12 | Circuit 87 M2 | |
| Voltage limit: Minimum Maximum | V | 10.8 | ||
| V | 16.5 | |||
| Medium heating current | mA | 400 | During idle | |
| Internal resistance of the Nernst cell | Ω | 300 | ||
| Power consumption of the Nernst cell | μA | <250 | ||
| Nernst voltage | mV | 450 | ||
| Maximum exhaust temperature | °C | ≤930 | ||
| Frequency | Hz | 100 | ||
| Special features | Potential-free insulated sensor with 6-way connector | |||
| Oxygen sensor downstream of catalytic converter (G3/5) consisting of: Left oxygen sensor element downstream of catalytic converter (G3/5b1), left oxygen sensor heater downstream of catalytic converter (G3/5r1) Right oxygen sensor downstream of catalytic converter (G3/6) consisting of: right oxygen sensor element downstream of catalytic converter (G3/6b1), right oxygen sensor heater downstream of catalytic converter (G3/6r1) |
||||
| Model | Narrow band oxygen sensor (LSF 4.2) | |||
| Supply voltage | V | 12 | Circuit 87 M2 | |
| Sensor voltage | V | approx. 1 | Direction rich mixture | |
| V | approx. 0 | Direction lean mixture | ||
| Frequency | Hz | 10 | ||
| Special features | Potential-free insulated sensor with 4-way connector | |||
| Internal combustion engine fan motor and air conditioning with integrated control (M4/7) | ||||
| Model | Electric suction fan | |||
| Supply voltage | V | 12 | Circuit 87 M2 and circuit 30 | |
| Operating voltage | V | 6 - 18 | ||
| Specified speed of the fan | over a pulse width modulated signal (PWM signal) from the ME-SFI [ME] control unit | |||
| Frequency | Hz | 10 | PWM signal | |
| Duty cycle | % | 0 - 100 | PWM signal | |
| Quiescent current | mA | 0.3 | ||
| Average operating current | A | 50 | ±2 A | |
| Throttle valve actuator (M16/6) consisting of: Actual value potentiometer 1 (M16/6r1), Actual value potentiometer 2 (M16/6r2), Actuator motor (M16/6m1) |
||||
| Model | Actuator motor with a contact-less angular sensor | |||
| Supply voltage of the actuator motor | V | 12.0 | ||
| Actuator motor power consumption | A | 1.5 - 9.5 | ||
| Supply voltage for potentiometer 1 and 2 | V | 5.0 | ||
| Potentiometer 1 | V | 0.5 | ±5.6% | Lower mechanical end stop |
| V | 4.65 | ±5.0% | Upper mechanical end stop | |
| Potentiometer 2 | V | 4.5 | ±5.6% | Lower mechanical end stop |
| V | 0.35 | ±5.0% | Upper mechanical end stop | |
| Diameter of throttle valve | mm | 74 | ||
| Operating temperature | °C | -40 - 120 | ||
| Coolant thermostat heating element (R48) | ||||
| Model | Heating element | |||
| Supply voltage | V | 12 | Circuit 87 M2 | |
| Frequency | Hz | 141 | ||
| Resistor | Ω | 15.3 | ±1.5 Ω | at 20°C |
| Oil level check switch (S43) | ||||
| Model | Reed contact (normally closed contact) | |||
| Supply voltage | V | 5 | ±5% | |
| Power consumption | mA | 1 | Minimum | |
| mA | 400 | Maximum (induction free) | ||
| Resistor | Ω | ∞ | Minimum oil level not reached | |
| Ω | 0 | Oil level OK | ||
| Shift point | mm | 19.2 | ±1 mm | |
| Special features | 2-pin connector, Pin 1 blank | |||
| Ignition coils for cylinders 1 - 6 (T1/1 - T1/6) | ||||
| Model | Single/multi-spark ignition coil | |||
| Supply voltage: | V | 12 | T1/1, T1/2, T1/3 | |
| Circuit 87M1 Circuit 87M3 |
V | 12 | T1/4, T1/5, T1/6 | |
| Operating voltage | V | 6 - 19 | ||
| Primary charging current | A | 21 | ||
| Resistance: Primary | Ω | 0.072 | ||
| secondary | __________kΩ | 1.59 | ||
| Inductance: Primary | μH | 90 | ||
| secondary | H | 2.78 | ||
| Special features | Diagnosis feedback over the current interface | |||
| Left intake camshaft solenoid (Y49/4), Right intake camshaft solenoid (Y49/5), Left exhaust camshaft solenoid (Y49/6), Right exhaust camshaft solenoid (Y49/7) |
||||
| Model | Magnet | |||
| Supply voltage: | V | 12 | Y49/5, Y49/7 | |
| Circuit 87M1 Circuit 87M3 |
V | 12 | Y49/4, Y49/6 | |
| Operating voltage | V | 8 - 16 | ||
| Maximum power consumption | A | <3.0 | ||
| Coil resistance | Ω | 7.5 | ±6.5% | |
| Inductance | mH | 23 | ||
| Frequency of the PWM signal | Hz | 150 | ||
| Operating temperature | °C | -40 - 130 | ||
| Start position of the intake camshaft | 36° after TDC (Top Dead Center) | |||
| Start position of the exhaust camshaft | 20° before top dead center | |||
| Adjustment range of the intake camshaft | 4° BTDC up to 36° ATDC | |||
| Adjustment range of the exhaust camshaft | 20° BTDC up to 20° after top dead center | |||
| Purging switchover valve (Y58/1) | ||||
| Model | Solenoid valve | |||
| Supply voltage | V | 12 | Circuit 87 M2 | |
| Operating voltage | V | 9 - 16 | ||
| Power consumption | mA | 0 - 500 | at 20°C | |
| Actuation | % | 0 - 100 | PWM signal | |
| Frequency | Hz | 200 | PWM signal | |
| Coil resistance | Ω | 25.5 | ±1.5 Ω | at 20°C |
| Fuel injectors for cylinders 1 to 6 (Y76/1 - Y76/6) | ||||
| Model | Piezo injectors | |||
| Voltages | V | 125 | Rated voltage (for 20°C) | |
| V | 160 | Maximum voltage | ||
| Current pulse: Open | A | 8 | ||
| Close | A | -8 | ||
| Actuation times: Open | μs | 180 | ||
| Close | μs | 200 | ||
| Loads | mC | 0.21 | Minimum loading | |
| mC | 0.69 | Nominal loading | ||
| Needle lift | μm | 34 | ||
| Flow | mg/ms | 34.5 | For 200 bar and 0.69 mC | |
| Resistor | ________kΩ | 220 | ±10 kΩ | |
| Fuel pressure on injector | bar | approx. 200 | ||
| Special features | 2-pin connector, Pin 1 (+), Pin 2 (-) | |||
| Radiator shutters actuator (Y84) | ||||
| Model | Electrical switchover valve | |||
| Supply voltage | V | 12 | Terminal 87 | |
| Operating voltage | V | |||
| Coil resistance | Ω | |||
| Inductance | mH | |||
| Quantity control valve (Y94) | ||||
| Model | Shift valve | |||
| Operating voltage | V | 6 - 16 | ||
| Power consumption | A | approx. 14 | Maximum at 20°C | |
| Effective current | A | < 5 | Maximum at 20°C | |
| Coil resistance | Ω | 0.49 | ±5% | at 20°C |
| Frequency | kHz | 4 | PWM signal | |
| Actuation | % | 0 - 90 | PWM signal | |
| Power loss (components) | W | 12 | Maximum | |
| Ambient temperature | °C | -40 - 120 | ||
| Special features | Valve safe position (de-energized open) | |||
| Engine oil pump valve (Y130) | ||||
| Model | Solenoid valve | |||
| Supply voltage | V | 12 | Circuit 87 M2 | |
| Frequency | Hz | 200 | PWM signal |
| Wiring diagram for gasoline direct injection system control unit | N3/10 Vehicle plug | PE07.08-P-2101-97DAJ | |
| N3/10 Engine connector | PE07.08-P-2101-97DAK |