View of engine 276.9 from top front |
N3/10 | ME-SFI [ME] control unit |
P07.70-2213-76
Location
The ME-SFI [ME] control unit is located on the left on engine.
Task
The ME-SFI [ME] control unit creates in an electrical combination with the sensors and actuators of engine 276 DE (Direct Injection) the engine timing.
The following systems and functions are controlled and coordinated by the ME-SFI [ME] control unit according to input signals:
Ignition system
Fuel supply
Injection control
Electronic accelerator
Diagnosis and fault storage
Engine start/stop function (for code B03 (ECO start/stop function))
Drive authorization system and immobilizer
Regulated camshaft adjustment
Intake manifold switchover
Thermal management
Torque interface
Alternator interface
Exhaust gas recirculation and exhaust treatment (with NOx catalytic converter) (with code 920 (Gasoline direct injection with stratified charge))
Input and output signals
The following input signals are evaluated by the engine timing system and respective output signals are issued:
Direct input signals
Direct output signals
LIN signals
CAN input signals
CAN output signals
Direct input signals
Terminal 15
Circuit 30 (fused)
Circuit 31
Circuit 87M4
RH knock sensor (A16/1)
LH knock sensor (A16/2)
Hot film mass air flow sensor (B2/5) (for code 920 Gasoline direct injection with stratified charge))
Intake air temperature sensor (B2/5b1) (model 204, 207, 212), intake air temperature sensor (B2/5b1) (model 218) (for code (920) Gasoline direct injection with stratified charge))
Fuel tank pressure sensor (B4/3) (for 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) ( model 204, 207, 212), coolant temperature sensor (B11/4) ( model 218)
Temperature sensor upstream of right NOx storage catalytic converter (B16) (for code 920 (Gasoline direct injection with stratified charge))
Temperature sensor upstream of left NOx storage catalytic converter (B16/1) (for code 920) (Gasoline direct injection with stratified charge))
Intake air temperature sensor (B17) (model 204, 207, 212), intake air temperature sensor (B17) (model 218) (except code 920 (Gasoline direct injection with stratified charge))
Intake manifold intake air temperature sensor (B17/1)
Pressure sensor downstream of the throttle valve (B28/7), (intake manifold pressure)
Accelerator pedal sensor (B37) - potentiometer 1
Accelerator pedal sensor - potentiometer 2
Crankshaft Hall sensor (B70)
Left oxygen sensor upstream of catalytic converter (G3/3)
Right oxygen sensor upstream of catalytic converter (G3/4)
Left oxygen sensor downstream of catalytic converter (G3/5)
Right oxygen sensor downstream of catalytic converter (G3/6),
Internal combustion engine and air conditioning fan motor with integrated control (M4/7) - status as a ground signal via the actuation line
Throttle valve actual value potentiometer 1 (M166r1)
Throttle valve actual value potentiometer 2 (M166r2)
Circuit 15 relay (N10/1kJ)
Engine circuit 87 relay (N10/1kJ)
Hall sensor on the right (M16/45b1), exhaust gas recirculation (for code 920 (Gasoline direct injection with stratified charge))
Hall sensor on the left (M16/45b2), exhaust gas recirculation (for code 920 (Gasoline direct injection with stratified charge))
Crash signal from supplemental restraint system control unit (N2/10) (model 204), supplemental restraint system control unit (N2/10) (model 207, 212, 218)
Oil level check switch (S43)
Direct output signals
Sensor voltages 1 and 2 (5 V) - engine plug
Sensor voltages 1 and 2 (5 V) - vehicle plug
Ground connections 1 and 2 - engine plug
Ground connection 1 - engine plug
Accelerator pedal sensor - reference masses for potentiometer 1 and 2
LH oxygen sensor upstream of catalytic converter - oxygen sensor heater
RH oxygen sensor upstream of catalytic converter - oxygen sensor heater
LH oxygen sensor downstream of catalytic converter - oxygen sensor heater
RH oxygen sensor downstream of catalytic converter - oxygen sensor heater
Fan motor for internal combustion engine and air conditioning system with integrated control (M4/7) - specified fan speed
Actuator motor (M16/6m1, throttle valve (plus)
Actuator motor (M16/6m1), throttle valve (minus)
EGR actuator motor on the right (M16/45m1) (for code 920 (Gasoline direct injection with stratified charge))
EGR actuator motor on the left (M16/45m2) (for code 920 (Gasoline direct injection with stratified charge))
Starter circuit 50 relay (N10/1kJ)
Engine circuit 87 relay (N10/1kJ)
Fuel system control unit (N118) - "fuel pump ON" ground signal
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)
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)
Purging switchover valve (Y58/1)
Activated charcoal canister shutoff valve (Y58/4) (for code 494 (USA version))
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)
LIN signals
Alternator interface via drive LIN (LIN C1)
CAN input signals
Instrument cluster (A1)
Fuel reserve signal
Supplemental restraint system control unit (N2/10) (model 204), Supplemental Restraint System control unit (N2/10) (model 207, 212, 218)
Crash signal
Driver seat belt applied
Engine hood closed (for code (U60) Pedestrian protection)
Rear SAM control unit with fuse and relay module (N10/2)
Engine hood closed (for code (551) Anti-theft alarm system (ATA))
AAC control and operating unit (N22/7)
Specified fan speed request
Air conditioning status
Engine torque request
Engine start request
Engine stop prohibition
Electronic Stability Program control unit (N30/4) (except code 233 (DISTRONIC PLUS), Electronic Stability Program Premium control unit (N30/7) (for code 233 (DISTRONIC PLUS))
Vehicle speed
Wheel speed signal
Brake recognition
Cruise control request
Engine torque request (increase)
Engine torque request (reduction)
Engine start request
Engine stop prohibition
Engine stop release
NOx sensors control units on the left and right (N37/5, N37/6) (for code 920 (Gasoline direct injection with stratified charge))
NOx concentration in the exhaust
O2 concentration in exhaust
Diagnostic data
AIRMATIC control unit (N51/3) (for code 489 (AIRmatic (air suspension with continuous adjustment damping)))
Engine start request
Engine stop prohibition
Radar sensors control unit (N62/1) (for model 207, 212 as of model year 2014 with code 23P (Driver Assistance Package Plus),model 218 as of model year 2015 with code 23P (Driver Assistance Package Plus))
Engine torque request (increase)
Engine torque request (reduction)
Video and radar sensor system control unit (N62/2) (for code 204 with code 233 (DISTRONIC PLUS), code 237 (Active Blind Spot Assist) and code 238 (Active Lane Keeping Assist)) (for model 218 up to model year 2015 with code 233 (DISTRONIC PLUS), with code 237 (Active Blind Spot Assist), with code 238 (Active Lane Keeping Assist))
Engine torque request (increase)
Engine torque request (reduction)
Left front door control unit (N69/1)
Driver door closed
Upper control panel control unit (N72/1)
Status button for ECO start/stop function (N72/1s50) (for code B03 (ECO start/stop function))
Electronic ignition lock control unit (N73)
Start enable (drive authorization system)
Steering column tube module control unit (N80)
Steering wheel angle
Steering wheel angular velocity
Fuel system control unit (N118)
Fuel pressure
Self-diagnosis data
Requested diagnostic data
Fully integrated transmission control controller unit (Y3/8)
Gear range
Transmission mode
Current gear, target gear
Engine torque request (reduction)
Starter enable in selector lever position "P" or "N"
Engine idle target engine speed (for actuation of the torque converter lockup clutch)
Status of torque converter lockup clutch
Transmission control limp-home mode
Transmission oil temperature
CAN output signals
Instrument cluster
Oil level too low
Circuit 61 signal (generated by ME-SFI [ME] control unit)
Fuel consumption (the trip computer is informed about the current fuel consumption by means of square-wave pulse packages (1 pulse = 0.2 l/h))
NOx sensors control units on the left and right (for code 920 (Gasoline direct injection with stratified charge))
Diagnosis request
Fuel system control unit
Fuel pump ON
Fuel specified pressure
Diagnosis request
Electronic ignition lock control unit
Start enable request (drive authorization system)
Fully integrated transmission control unit
Requests for catalytic converter heating
Shift request
Engine torque
Engine coolant temperature
Engine oil temperature
Engine speed
Engine load
Kickdown
Engine speed limitation active
Engine timing limp-home mode
Body
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 housing contains the 32-bit measuring and control electronics for the engine timing.
Power 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 operating 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.
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 about the partial function "no-load current switch off" 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.
Exchange of the ME-SFI [ME] control unit is not necessary.
Wiring diagram for gasoline-DI control unit | N3/10 engine connector model 204 | ||
N3/10 vehicle connector model 204 | |||
N3/10 engine connector model 207 | |||
N3/10 vehicle connector model 207 | |||
N3/10 engine connector model 212 | |||
N3/10 vehicle connector model 212 | |||
N3/10 engine connector model 218 | |||
N3/10 engine connector model 218 |