Component description for ME-SFI (ME) control unit - GF07.61-P-6000MM

ENGINE 276.9 in MODEL 204, 207, 212 (except 212.095), 218 

View of engine 276.9 from top front 

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 (D  irect 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:

• 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 87 M4
• 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	PE07.08-P-2101-97FAE
		N3/10 vehicle connector model 204	PE07.08-P-2101-97FAF
		N3/10 engine connector model 207	PE07.08-P-2101-97EAE
		N3/10 vehicle connector model 207	PE07.08-P-2101-97EAF
		N3/10 engine connector model 212	PE07.08-P-2101-97DAI
		N3/10 vehicle connector model 212	PE07.08-P-2101-97DAH
		N3/10 engine connector model 218	PE07.08-P-2101-97XAE
		N3/10 engine connector model 218	PE07.08-P-2101-97XAD