GF07.61-P-6000MLK ME-SFI [ME] Control Unit, Component Description

GF07.61-P-6000MLK ME-SFI [ME] Control Unit, Component Description
- refinement package
- as of model year 09

Component Identification:

Location
The ME-SFI control unit is located in the control unit box, at the left rear of the engine compartment.

Task
The ME-SFI control unit represents the engine control, when connected electrically to the sensors and actuators of engine 113 EVO.
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
- Drive authorization system and immobilizer
- Intake manifold changeover
- Heat management
- Torque interface
- Emission control

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
^ CAN input signals
^ CAN output signals

Direct input signals
- Circuit 30 (fused)
- Tml. 31
- Circuit 87M1
- Knock sensor 1, on the right (A16/1)
- Knock sensor 2, on the left (A16/2)
- Hot film mass air flow sensor (B2/5)
- Intake air temperature sensor (B2/5b1)
- Tank pressure sensor (B4/3) (with Code (494) USA version)
- Camshaft Hall sensor (B6/1)
- Coolant temperature sensor (B11/4)
- Pressure sensor (intake manifold air pressure) (B28)
- Accelerator pedal sensor (B37) - potentiometer 1
- Accelerator pedal sensor - potentiometer 2
- Oil sensor (oil level, temperature and grade) (B40) - PWM signal
- LH O2 sensor upstream of CAT (G3/3) (non-linear oxygen sensor)
- RH O2 sensor upstream of CAT (G3/4) (non-linear oxygen sensor)
- LH O2 sensor downstream of CAT (G3/5) (non-linear oxygen sensor)
- RH O2 sensor downstream of CAT (G3/6) (non-linear oxygen sensor)
- Crankshaft position sensor (L5)
- Throttle valve - actual value potentiometer 1 (M16/6r1)
- Throttle valve - actual value potentiometer 2 (M16/6r2)
- Crash signal from the restraint system control unit (N2/7)

Direct output signals
- Sensor voltage (5 V) - engine connector
- Sensor voltage (5 V) - vehicle connector
- Sensor ground - engine connector
- Sensor ground - vehicle connector
- Accelerator pedal sensor - reference ground for potentiometer 1
- Accelerator pedal sensor - reference ground for potentiometer 2
- LH O2 sensor upstream of CAT - oxygen sensor heater
- RH O2 sensor upstream of CAT - oxygen sensor heater
- LH O2 sensor downstream of CAT - oxygen sensor heater
- RH O2 sensor downstream of CAT - oxygen sensor heater
- Engine and air conditioning electric suction fan with integrated control (M4/7) - specified speed of the fan
- Throttle valve - actuator motor (M16/6m1) +
- Throttle valve - actuator motor (M16/6m1) -
- Air pump relay (N10/1kO)
- Circuit 87 relay, engine (N10/1kR)
- Starter relay (N10/1kS)
- Fuel pump relay (N10/2kA)
- 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)
- Variable intake manifold changeover valve (Y22/6)
- EGR pressure transducer (Y31/1)
- Air pump changeover valve (Y32)
- Purge control valve (Y58/1)
- Activated charcoal canister shutoff valve (Y58/4) (with code (494) USA version)
- Cylinder 1 fuel injection valve (Y62y1)
- Cylinder 2 fuel injection valve (Y62y2)
- Cylinder 3 fuel injection valve (Y62y3)
- Cylinder 4 fuel injection valve (Y62y4)
- Cylinder 5 fuel injection valve (Y62y5)
- Cylinder 6 fuel injection valve (Y62y6)
- Cylinder 7 fuel injection valve (Y62y7)
- Cylinder 8 fuel injection valve (Y62y8)
- TNA signal (engine speed signal)

CAN input signals
Instrument cluster (A1)
- Fuel reserve signal

Restraint systems control unit (N2/7)
- Crash signal

Comfort AAC [KLA] control and operating unit (N22/7)
- Specified fan speed request
- Engine torque request

ESP and BAS control unit (N47-5)
- Vehicle speed
- Wheel speed signal
- Brake recognition
- Cruise control request
- Engine torque request

Electric controller unit (VGS) (Y3/8)
- Drive position
- Transmission mode
- Actual gear, target gear
- Engine torque reduction request
- Starter enable in selector lever position "P, N"
- Engine idle specified speed (for actuation of the torque converter lockup clutch)
- Status of torque converter lockup clutch
- Emergency transmission control

EIS control unit (N73)
- Start enable (drive authorization system)

CAN output signals
Instrument cluster (A1)
- Engine oil level
- Engine oil temperature
- Engine oil quality
- 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))

EIS control unit (N73)
- Start query (drive authorization system)

Electric controller unit (VGS) (Y3/8)
- Requests for catalytic converter heating
- Switching request
- Engine torque
- Engine coolant temperature
- Engine oil temperature
- Engine speed
- Engine load
- Kickdown
- Engine speed limitation active
- Limp-home mode engine control

Design
The housing of the ME-SFI control unit is made of corrosion-resistant sheet steel. The ME-SFI [ME] control unit is protected against water and dusts.
The housing contains the 16-bit measuring and control electronics for the engine control.

Voltage supply
The ME-SFI [ME] control unit is "circuit 30 secured" and also supplied with voltage for ignition ON by "circuit 87 M1" .
It is fitted in the operating voltage range with short-circuit protection as well as reversed polarity protection.

In certain cases voltage is supplied through several pins connected in parallel by to relief the electrical connectors.

Ground connection
The "tml. 31" ground link consists of several ground lines from the LH A-pillar ground (W29/10).

Computer run-on
The ME-SFI control unit has no computer power-down phase.

Assembly operations
Before detaching the connector from the ME-SFI control unit, ensure that the ignition is switched off. This is to prevent damage to the ME SFI control unit and save errors in the control units linked to the CAN.

Variants
The engine control variants, for example country and exhaust variants, are activated by variant coding using the Diagnosis Assistance System (DAS).
Replacement of the ME-SFI [ME] control unit is not necessary.