GF07.61-P-6000MMJ | ME-SFI [ME] control unit, component description | 18.4.12 |
ENGINES 157.9 in MODEL 463 as of model year 2013
/ YoM 12 model refinement package
P07.70-2362-76
View of engine from front
N3/10 ME-SFI [ME] control unit
Location
The ME-SFI [ME] control unit is located in the middle at the rear on the engine.
Task
The ME-SFI [ME] 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
- Emission control
- Diagnosis and fault storage
- Injection control
- Electronic accelerator
- Drive authorization system and immobilizer
-----------------------------------------------------------------------------------------
- Alternator interface
- Regulated camshaft adjustment
- Fuel supply
- Torque interface
- Engine control, start/stop function
- Heat management
- Ignition system
Reading in of sensors and signals
Input factors are read in by means of the following connections:
- Direct line
- Drivetrain 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
- Drivetrain 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 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 timing:
Input factors over the direct line | Initial parameters over the direct line | Supplemental information |
Circuit 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 (A16/4) | - | - |
Fuel tank pressure sensor (B4/3) | - | for code (ZU8) USA version |
Fuel pressure and temperature sensor (B4/25) | - | - |
LH intake camshaft Hall sensor (B6/4) | - | - |
RH intake camshaft Hall sensor (B6/5) | - | - |
LH exhaust camshaft Hall sensor (B6/6) | - | - |
RH 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 RH 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) | - | - |
Circuit 15 relay (F58kR) | - | - |
- | Starter circuit 50 relay (F58kM) | - |
Circuit 87 M relay (F58kN) | Circuit 87M relay (F58kN) | - |
- | Turbocharger relay (F58kO) | - |
LH oxygen sensor sensor element upstream of catalytic converter (G3/3b1) | - | - |
- | Left oxygen sensor heater upstream of catalytic converter (G3/3r1) | - |
Right oxygen sensor sensor element upstream of catalytic converter (G3/4b1) | - | - |
- | Right oxygen sensor heater upstream of catalytic converter (G3/4r1) | - |
Left oxygen sensor sensor element downstream of catalytic converter (G3/5b1) | - | - |
- | Left oxygen sensor heater downstream of catalytic converter (G3/5r1) | - |
Right oxygen sensor sensor element downstream of catalytic converter (G3/6b1) | - | - |
- | Right oxygen sensor heater downstream of catalytic converter (G3/6r1) | - |
Fan motor (M4/7) | Fan motor (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) | - | - |
- | Fuel pump 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) | - |
- | LH intake camshaft solenoid (Y49/4) | - |
- | RH intake camshaft solenoid (Y49/5) | - |
- | LH exhaust camshaft solenoid (Y49/6) | - |
- | RH exhaust camshaft solenoid (Y49/7) | - |
- | Purge control valve (Y58/1) | - |
- | Activated charcoal canister shutoff valve (Y58/4) | for code (ZU8) 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 transducer (Y77/1) | - |
- | Left quantity control valve (Y94/1) | |
- | Right quantity control valve (Y94/2) | - |
- | 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 drivetrain LIN (LIN C1) | Initial parameters via the drivetrain LIN (LIN C1) | Supplemental information |
Alternator (G2) | Alternator (G2) | - |
Oil sensor (oil level, temperature and quality) (B40) | - | - |
Input factors via drive train CAN (CAN C) | Initial parameters via drive train CAN (CAN C) | Supplemental information |
Fuel pump control unit (N118) | Fuel pump control unit (N118) | - |
Control unit for fully integrated transmission control (Y3/8n4) | Control unit for fully integrated transmission control (Y3/8n4) | - |
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) |
DISTRONIC electric controller unit (A89) | DISTRONIC electric controller unit (A89) | via the vehicle dynamics CAN (CAN H) and Electronic Stability Program control unit (N30/4) |
Supplemental Restraint System control unit (N2/10) | - | - |
SAM control unit (N10) | - | via interior CAN (CAN B) and electronic ignition lock control unit (N73) |
A/C 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) | - | - |
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 electronic ignition lock control unit (N73) |
Design
The housing of the ME-SFI [ME] control unit is made out of diets 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 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.
Power is supplied through several pins connected in parallel to relieve the electrical connectors.
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).
No-load current shutoff
Information for partial function "no-load current shutoff" is documented in the function description "Energy management engine OFF function".
Variants
The engine control 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: minimum | V V | 8.0 19.0 | ||
Power consumption: Quiescent current | μA μA | 1000 700 | Maximum Typical | |
Reverse polarity protection | Yes | |||
Short-circuit resistance | ||||
Additional specific parameters | No | |||
Flash capability/coding capability | Yes/yes | |||
Special features | No | |||
Knock sensor 1 (A16/1), knock sensor 2 (A16/2), knock sensor 3 (A16/3), knock sensor 4 (A16/4) | ||||
Model | Capacitive sensor (piezo crystal) | |||
Capacity | pF | 1050 | 23.8% | |
Sensitivity | mV/g | 26 | 30.8% | |
Resistor | MΩ | >10 | ||
Linearity | kHz | 3 - 20 | ||
Working temperature | °C | -40 - 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 | |||
Fuel tank pressure sensor (B4/3) | ||||
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 0 mbar 30 mbar | V V V | 0.5 3.0 4.5 | ||
LH intake camshaft Hall sensor (B6/4) RH intake camshaft Hall sensor (B6/5) LH exhaust camshaft Hall sensor (B6/6) RH exhaust camshaft Hall sensor (B6/7) | ||||
Model | Hall sensor | |||
Supply voltage: Circuit 87 M1 | V V | 4.7 - 18 4.7 - 18 | B6/5, B6/7 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 | |||
Supply voltage | V | 5.0 | 5% | |
Series resistor | Ω | 1470 | 1% | |
Resistance at: 20°C 40°C 60°C 80°C 100°C 120°C | Ω Ω Ω Ω Ω Ω | 3117 1332 628 320 175 101 | ||
Special features | Arbitrary polarity | |||
Charge air temperature sensor (B17/8) | ||||
Model | NTC resistor | |||
Supply voltage | V | 5.0 | 5% | |
Series resistor | kΩ | 3.16 | 1% | |
Resistance: -20°C 0°C 20°C 40°C 60°C | Ω Ω Ω Ω Ω | 97120 32660 12490 5325 2490 | ||
Special features | 2-pin connector | |||
Pressure sensor downstream of left cylinder bank air filter (B28/4) Pressure sensor downstream of right cylinder bank air filter (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 (B28/6) Pressure sensor downstream of throttle valve (B28/7) | ||||
Model | Pressure sensor | |||
Supply voltage | V | 5.0 | 0.25 V | |
Output voltage | V | 0.5 - 4.5 | For a 5 V supply voltage | |
Power consumption | mA | 10 | Maximum | |
Output current | mA | 1 | ||
Measuring range | kPa | 10 - 125 | Absolute pressure | |
Signal plausibility | V | 0.10 - 4.94 | ||
Working temperature | °C | -40 - 125 | ||
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 | |||
Oil sensor (oil level, temperature and quality) (B40) | ||||
Model | Sensor with integrated electronics | |||
Supply voltage | V | 12 | Circuit 87 M2 | |
Power consumption: Typical Maximum | mA mA | 3 6 | ||
Oil temperature | °C | -40 - 160 | Plausible | |
Measuring range of oil level | mm | 75 | ||
Permitivity value: Oil quality good Oil quality poor Oil quality poor | 2 4.5 6 |
Maximum | ||
Signal resolution | Bit | 10 | ||
Interface transfer rate: Maximum | kbit/s | 20 | Communication with ME-SFI control unit via drive LIN (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 | A/C alternator with integral rectification | |||
Interface transfer rate: Maximum | kbit/s | 20 | Communication with ME-SFI control unit via drive LIN (LIN | |
Special features | Self-diagnosis | |||
Left oxygen sensor upstream of catalytic converter (G3/3) consisting of: Left oxygen sensor sensor element upstream of catalytic converter (G3/3b1), Right oxygen sensor upstream of catalytic converter (G3/4) consisting of: | ||||
Model | Wideband oxygen sensor (LSU 4.9) | |||
Supply voltage | V | 12 | Circuit 87 M2 | |
Voltage limit: minimum | V V | 10.8 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 | |||
Left oxygen sensor downstream of catalytic converter (G3/5) consisting of: Left oxygen sensor sensor element downstream of catalytic converter (G3/5b1), Right oxygen sensor downstream of catalytic converter (G3/6) consisting of: | ||||
Model | Narrow band oxygen sensor (LSF 4.2) | |||
Supply voltage | V | 12 | Circuit 87 M2 | |
Sensor voltage | V V | approx. 1 approx. 0 | Direction rich mixture Direction lean mixture | |
Frequency | Hz | 10 | ||
Special features | Potential-free insulated sensor with 4-way connector | |||
Fan motor (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 | |||
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 V | 0.5 4.65 | 5.6% 5.0% | Lower mechanical end stop Upper mechanical end stop |
Potentiometer 2 | V V | 4.5 0.35 | 5.6% 5.0% | Lower mechanical end stop Upper mechanical end stop |
Resistance potentiometer 1 and 2 | Ω | 1200 | 30% | At the same time |
Working temperature | °C | -40 - 120 | ||
Diameter of throttle valve | mm | 82 | ||
Special features | Antagonistic potentiometers | |||
Coolant 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 | ||
Cylinder 1 - 8 ignition coils (T1/1 - T1/8) | ||||
Model | Single/multi-spark ignition coil | |||
Supply voltage: Circuit 87 M1 | V V | 12 12 | T1/1, T1/4, T1/6, T1/7 T1/2, T1/3, T1/5, T1/8 | |
Operating voltage | V | 6 - 19 | ||
Primary charging current | A | 21 | ||
Resistance: primary secondary | Ω kΩ | 0.072 1.59 | ||
Inductivity: primary secondary | μH H | 90 2.78 | ||
Special features | Diagnosis feedback over the current interface | |||
LH intake camshaft solenoid (Y49/4) RH intake camshaft solenoid (Y49/5) LH exhaust camshaft solenoid (Y49/6) RH exhaust camshaft solenoid (Y49/7) | ||||
Model | Magnet | |||
Supply voltage: Circuit 87 M1 | V V | 12 12 | Y49/5, Y49/7 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 (Top Dead center) | |||
Start position of the exhaust camshaft | 30° before top dead center | |||
Adjustment range of the intake camshaft | 4° BTDC up to 36° ATDC | |||
Adjustment range of the exhaust camshaft | 30° BTDC up to 10° 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) | ||||
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% | |
Fuel injectors for cylinders 1 to 8 (Y76/1 - Y76/8) | ||||
Model | Piezo injectors | |||
Voltages | V V | 140 210 | Rated voltage (for 20°C) Maximum voltage | |
Current impulse: Open Close | A A | 8 -8 | ||
Actuation times: Open Close | μs μs | 180 200 | ||
Loads | mC mC | 0.21 0.69 | Minimum loading 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 (-) | |||
Boost pressure control transducer (Y77/1) | ||||
Model | Electro-pneumatic converter | |||
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 | ||
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 |