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Component description for ME-SFI [ME] control unit - GF07.61-P-6000MMC

ENGINES 157.9 in MODEL 216.3, 221.0/1 

ENGINES 278.9 in MODEL 216.3, 221.0/1 

View of engine from front 

Location 

The ME-SFI [ME] control unit is located at the center on the charge air manifold.

Fig 1: Identifying ME-SFI [ME] Control Unit Components (View Of Engine From Front)
G07510405Courtesy of MERCEDES-BENZ USA

Task 

The ME-SFI [ME] control unit creates in an electrical combination with the sensors and actuators of engines 157 and 278 DE (Direct-I njection) the engine timing.

The following systems and functions are controlled and coordinated by the ME-SFI [ME] control unit according to input signals:

Input and output signals 

The following input signals are evaluated by the engine control and issued in the respective output signals:

Direct input signals 

Direct output signals 

LIN signals 

CAN input signals 

Instrument cluster (A1) 

Restraint systems control unit (N2/7) 

Rear SAM control unit with fuse and relay module (N10/2) 

AAC control unit (N22/1) 

ESP control unit (N47-5) 

AIRMATIC with ADS control unit (N51) (for code (489) AIRMATIC (air suspension with continuous adjustment damping) 

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 door control unit (N69/1) (for model 216) and left front door control unit (N69/1) (for model 221) 

Upper control panel control unit (N72/1) 

EIS [EZS] control unit (N73) 

Steering column tube module (N80) 

Fuel system control unit (N118) 

Electric controller unit (VGS) (Y3/8) 

CAN output signals 

Instrument cluster 

EIS control unit 

Fuel pump control unit 

Electric controller unit (VGS) 

Design 

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 dusts.

The housing contains the 32-bit measuring and control electronics for the engine control.

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.

Voltage is supplied through several pins connected in parallel to relieve the electrical connectors.

Ground connection 

The "circuit 31" ground link consists of several ground lines from electronic ground (LH footwell) (W34/1).

Computer run-on 

If the ME-SFI [ME] control unit receives the signal "circuit 15 OFF", a processor run-on of approx. 4 seconds is started.

However, it may also last for several minutes due to various functions (for example, on-board diagnosis (OBD), drive authorization system (DAS), thermal management).

IMPORTANT Assembly operations

Ensure before unplugging the plug on the ME-SFI [ME] control unit that the ignition is switched off and computer run-on has ended. This is to prevent damage to the ME-SFI [ME] control unit and save errors in the control units linked to the CAN.

Variants 

The engine control variants, such as country and exhaust gas variants, are activated with the Diagnosis Assistance System (DAS) 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: minimum V 80    
  maximum V 19.0    
Power consumption: Quiescent current μA 1000   Maximum
    μA 700   Typical
Reverse polarity protection         Yes
Additional specific parameters         No
Flash capability/coding capability         Yes/yes
Special features         No
Front knock sensor (left side of engine) (A29/1) 
Rear knock sensor (left side of engine) (A29/2) 
Front knock sensor (right side of engine) (A30/1) 
Rear knock sensor (right side of engine) (A30/2) 
         
Model         Capacitive sensor (piezo crystal)
Capacity   PF 1050 ±23.8%  
Sensitivity   mV/g 26 ±30.8%  
Resistor   >10    
Linearity   kHz 3 - 20    
Working temperature   °C -40 - +150    
Tank pressure sensor (B4/3) (with code (494) USA version)           
Model         Pressure sensor
Supply voltage   V 5.0 ±5%  
Power consumption   mA < 10    
Measuring range   mbar -50 - 30    
Output voltage   V 0.5 - 4.5    
Characteristic for: -50 mbar V 0.5    
  0 mbar V 3.0    
  30 mbar V 4.5    
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   3    
Resistor   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) 
RH exhaust camshaft Hall sensor (B6/7) 
         
Model         Hall sensor
Supply voltage: Circuit 87 M1 V 4.7 - 18   B6/5, B6/7
  circuit 87 M3 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 egativer emperatur oeffizient (NTC thermistor)
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) (on engine 278, with code (494) USA version and code (917) Partial zero emission vehicle USA)           
Supply voltage   V 12   Circuit 87
Interface transfer rate: Maximum kbit/s 20   Communication with the ME-SFI [ME] control unit via the drivetrain LIN
Special features         3-pin connector
Intake air temperature sensor (B17)           
Model         NTC resistor
Supply voltage   V 5.0 ±5%  
Series resistor   3.16 ±1%  
Resistance: -20°C Ω 97120    
0°C Ω Ω 32660    
  20°C Ω 12490    
  40°C Ω 5325    
  60°C Ω 2490    
Special features         2-pin connector
Pressure sensor downstream of air filter, LH cylinder bank (B28/4) 
Pressure sensor downstream of air filter, RH cylinder bank (B28/5) 
         
Model         Pressure sensor
Supply voltage   V 5.0 ±0.25 V  
Output voltage   V 0.1 - 4.9   For a 5 V supply voltage
Power consumption   mA 10   Maximum
Output current   mA ±1    
Measuring range   kPa 7 - 110   Absolute pressure
Signal plausibility     V 0.08 - 4.94  
Working temperature   °C -40 - +135    
Pressure sensor upstream of throttle valve actuator (B28/6) 
Pressure sensor downstream of throttle valve actuator (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    
Working 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 sensors
Temperature range   °C -40 - +80    
Special features         Direct contacting over a 6-pin connector
Oil sensor (oil level, temperature and quality) (B40) (for engine 157)           
Model         Sensor with integrated electronics
Supply voltage   V 12   Circuit 87 M2
Power consumption: Typical mA 3    
  Maximum mA 6    
Oil temperature   °C -40 - +160   Plausible
Measuring range of oil level   mm 75    
Permitivity value: Oil quality good   2    
  Oil quality poor   4.5    
  Oil quality poor   6 Maximum  
Signal resolution   Bit 10    
Interface transfer rate: Maximum kbit/s 20   Communication with the ME-SFI [ME] control unit via the drivetrain LIN
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
Alternator (G2)           
Model         AC alternator with integral rectification
Interface transfer rate: Maximum kbit/s 20   Communication with the ME-SFI [ME] control unit via the drivetrain LIN
Special features         Self-diagnosis
Left O2 sensor upstream of CAT (G3/3) Right O2 sensor upstream of CAT (G3/4)           
Model         Wideband oxygen sensor (LSU 4.9)
Supply voltage   V 12   Circuit 87 M2
Voltage limit: minimum   V   10.8
  maximum   V 16.5  
Medium heating current   mA 400   During idling
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
Left O2 sensor downstream of CAT (G3/5) Right O2 sensor downstream of CAT (G3/6)           
Model         Voltage-leap 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
Engine and AC electric suction fan 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)           
Model         Actuator motor
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
Resistance of potentiometer 1 and 2   Ω 1200 ±30% At the same time
Working temperature   °C -40 - +120    
Diameter of the throttle valve   mm 82    
Special features         Counter-running potentiometer
Two-disk thermostat heating element (R48)           
Model         Heating element
Supply voltage   V 12   Circuit 87 M2
Rated voltage   V 13.5    
Operating voltage   V 16   Maximum
Operating current   A ≤1    
Frequency   Hz 141    
Resistor   Ω 15.2 ±2 Ω  
Temperature   °C -40 - +140    
Oil level check switch (S43) (for engine 278)           
Model         Reed contact (normally closed contact)
Supply voltage   V 5 ±5%  
Power consumption   mA 1   Minimum
Power consumption   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
Cylinder 1 - 8 ignition coils (T1/1 - T1/8)           
Supply voltage: Circuit 87 M1   V 12 T1/1, T1/4, T1/6, T1/7
  circuit 87 M3   V 12 T1/2, T1/3, T1/5, T1/8
Operating voltage   V 6 - 19    
Primary charging current   A 21    
Resistance: primary Ω 0.072    
secondary 1.59      
Inductivity: primary μH 90    
  secondary H 2.78    
Special features         Diagnosis feedback over the current interface
Heating system shutoff valve (Y16/2) up to 05/2011           
Model         Solenoid valve
Supply voltage   V 12   Circuit 87 M2
Rated voltage   V 13.5    
Operating voltage   V 8 - 16    
Power consumption   A 1.6   Maximum
  Ambient temperature °C -40 - +140    
Temperature range for the coolant   °C -40 - +125    
Switching condition: Valve open         Pin 3 no ground
Valve closed         Pin 3 on ground
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: Circuit 87 M1   V 12   Y49/5, Y49/7
  circuit 87 M3   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   Hz 150   PWM signal
Working temperature   °C -40 - +130    
Start position of the intake camshaft         36° after top dead center ( op ead 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
Purge control 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
Activated charcoal canister shutoff valve (Y58/4) 
(with code (494) USA version) 
         
Model         Solenoid valve
Supply voltage   V 12   Circuit 87 M2
Operating voltage   V 10 - 15    
Power consumption   A < 0.75    
Coil resistance   Ω 16.6 ±5%  
Injection nozzle for cylinder 1 to 8 (Y76y1 - Y76y8)           
Model         Piezo injectors
Voltages   V 125   Rated voltage (for 20°C)
      V 160 Maximum voltage
Current impulse: 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   220 ±10 KΩ  
Fuel pressure on injector   bar approx. 200    
Special features         2-pin connector, Pin 1 (+), Pin 2 (-)
Boost pressure regulator (Y77/1) (boost pressure control pressure transducer)           
Model         Solenoid valve
Supply voltage   V 12   Circuit 87 M2
Operating voltage   V 10 - 16    
Power consumption   A approx. 1   For 23°C (±5°C) and 12 V
Duty cycle   % 100    
Duty cycle   % 5 - 95   For 10 V
Operating frequency   Hz 300   PWM signal
Inductance   mH approx. 15   For 23°C (±5°C)
Coil resistance   Ω 10.5 ±0.7 For 23°C (5°C)
Air consumption   l/h < 35    
Ambient temperature   °C -40 - +130    
Exhaust flap switchover valve (Y93) (for model 221 with engine 278)           
Model         Solenoid valve
Supply voltage   V 12   Circuit 87 M2
Operating voltage   V 8.5 - 16    
Dropout voltage, unpressurized   V ≥1.5   For 23°C (±5°C)
Pull-in voltage   V ≤6.5   For 23°C (±5°C) and -950 mbar
Rated current   A 0.43   For 23°C (± 5°C)
Resistor   Ω 28.1 ±5% For 23°C (± 5°C)
Inductance   mH approx. 12    
Ambient temperature   °C -40 - +120    
Left quantity control valve (Y94/1) 
Right quantity control valve (Y94/2) 
         
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
TORQUE SPECIFICATION Wiring diagram for gasoline direct injection system control unit N3/10   Vehicle plug, model 216 PE07.08-P-2101-97CAA
    N3/10 Engine plug sheet 1 Model 216 PE07.08-P-2101-97CAB
    N3/10 Engine plug sheet 2 Model 216 PE07.08-P-2101-97CAC
  N3/10   Vehicle plug, model 221 PE07.08-P-2101-97SAC
    N3/10 Engine plug sheet 1 Model 221 PE07.08-P-2101-97SAD
    N3/10 Engine plug sheet 2 Model 221 PE07.08-P-2101-97SAF