Gasoline injection and ignition system with direct injection, function - GF07.70-P-0002MMC
ENGINES 157.9 in MODEL 216.3, 221.0/1
ENGINES 278.9 in MODEL 216.3, 221.0/1
Block diagram
Gasoline injection and ignition system with direct injection, general points
The gasoline injection and ignition system with DI creates the engine timing "MED 17.7.3" in an electrical combination with the sensors and actuators of engines 157 AMG and 278 DE (D irekt-E inspritzung).
The abbreviated designation MED 17.7.3 means:
M = M otronic
E = E lectronic accelerator pedal
D = D irect injection
17.7.3 = Version 17.7.3
The ME-SFI [ME] control unit contains the whole engine control. The engine control system reads in sensor data both directly and via the CAN network and actuates the corresponding actuators. Here the individual functions and systems of the engine timing are controlled and coordinated by the ME-SFI [ME] control unit.
The following table represents the model and major assembly overviews for the engines 157 and 278:
| Sales designation | Model | Engine | Transmission | Engine control | Notes |
|---|---|---|---|---|---|
| Model series 216 | |||||
| CL 550 | 216.373 (Coupe) | 278.920 | 722.909 | MED 17.7.3 | |
| CL 550 4MATIC | 216.394 (Coupe) | 278.920 | 722.967 | MED 17.7.3 | |
| CL 63 AMG | 216.374 (Coupe) | 157.980 | 722.909 | MED 17.7.3 | |
| Model series 221 | |||||
| S 500 | 221.073 (Sedan) | 278.932 | 722.909 | MED 17.7.3 | Sales designation except for in USA, Japan and Canada |
| S 500 L | 221.173 (Limousine Long) | 278.932 | 722.909 | MED 17.7.3 | Sales designation except for in USA, Japan and Canada |
| S 500 4MATIC | 221.094 (Sedan) | 278.932 | 722.967 | MED 17.7.3 | Sales designation except for in USA, Japan and Canada |
| S 500 L 4MATIC | 221.194 (Limousine Long) | 278.932 | 722.967 | MED 17.7.3 | Sales designation except for in USA, Japan and Canada |
| S 550 | 221.073 (Sedan) | 278.932 | 722.909 | MED 17.7.3 | Sales designation in USA, Japan and Canada |
| S 550 L | 221.173 (Limousine Long) | 278.932 | 722.909 | MED 17.7.3 | Sales designation in USA, Japan and Canada |
| S 550 4MATIC | 221.094 (Sedan) | 278.932 | 722.967 | MED 17.7.3 | Sales designation in USA, Japan and Canada |
| S 550 L 4MATIC | 221.194 (Limousine Long) | 278.932 | 722.967 | MED 17.7.3 | Sales designation in USA, Japan and Canada |
| S 63 AMG | 221.074 (Sedan) | 157.980 | 722.909 | MED 17.7.3 | |
| S 63 L AMG | 221.174 (Limousine Long) | 157.980 | 722.909 | MED 17.7.3 |
The engine control is subdivided into the following systems:
- Basic functions
- Engine system
- Injection system
- Ignition system
- Exhaust system
Basic functions
- Control unit diagnosis
- Fault memory
- On-board diagnosis II (OBD II)
- Diagnosis via CAN
- CAN network
- Flash programming
- Variant coding
- Drive authorization system 3 (DAS 3)
- Torque coordination
- Heat management
- Alternator interface
- Maximum vehicle speed limit
Diagnosis
For diagnostic purposes, the Diagnosis Assistance System (DAS) can be used to read out and delete the engine control fault codes, and to actuate certain specific diagnostic functions.
CAN network
The ME-SFI [ME] control unit exchanges data with other control units via the connected drive train CAN and chassis CAN which are integrated in the CAN network.
The ME-SFI [ME] control unit also acts as the interface (gateway) between the two CAN bus systems.
Flash programming
The engine control in the ME-SFI [ME] control unit is flash programmable, that is the complete software in the control unit can be replaced using the DAS (installed new). The software required for control unit programming can be found on the Star Diagnosis Update DVD.
Variant coding
The following vehicle versions and equipment are examples of items that can be coded with the DAS using variant coding:
- Vehicle model
- National version
- Exhaust variants
- Transmission version
Engine system
- Start relay actuation
- Throttle valve control
- Safety fuel shutoff
- Transmission overload protection
- Support for Electronic Stability Program (ESP)
- Support for fully integrated transmission control (VGS)
- Starting torque limitation
- Suction fan actuation
- Calibration of throttle valve
- Controlled adjustment of the intake and exhaust camshafts
- Charge pressure control
- Control of the engine start/stop function (for code (B03) ECO start/stop function)
Injection system
- Cylinder-selective DI (homogeneous mode)
- Start, post-start phase and acceleration enrichment
- Warm running regulation
- Idle speed control
- Limp-home function
- Increasing the rotational speed for an activated A/C
- Inertia fuel shutoff
- Fuel pump control
- Altitude adaptation
- Load change function
- Rpm limitation
Ignition system
- Single spark ignition
- Ignition map
- Rpm limitation
- Knock sensor system
- Synchronization of camshaft and crankshaft positions
Exhaust system
- Catalytic converter heating
- Oxygen sensor heater control
- Straight-line lambda control
The operating conditions of the engine and the concurrently active engine control subfunctions are described in the following documents:
- Ignition ON, function
- Starting, function
- Ignition OFF, function
- Fuel supply, function
- Injection regulation, function
- Ignition system function
- Synchronize fuel injection and firing order function
- Start, post-start phase and warm-up enrichment, function
- Rpm control, function
- Alternator interface, function
- Lambda control, function
- Smooth running control, function
- Thermal management, function
- Torque coordination, function
- Deceleration fuel shutoff, function
- Knock control, function
- Camshaft adjustment, function
- Engine limp-home mode, function
- On-board diagnosis, function
- Engine start/stop function (for code (B03) ECO start/stop function)
- Forced induction, function
- Exhaust treatment, function
- Electronic accelerator function
- Refueling gas recovery function (with code (494) USA version)
- Purging function
- System purging with leak test function (with code (494) USA version)
| Ignition ON, function | GF07.10-P-1000MMC | ||
| Starting, function | GF07.10-P-1001MMC | ||
| Ignition OFF, function | GF07.10-P-1002MMC | ||
| Fuel supply, function | GF07.10-P-1003MMC | ||
| Injection regulation, function | GF07.10-P-1004MMC | ||
| Ignition system function | GF07.10-P-1005MMC | ||
| Synchronize fuel injection and firing order function | GF07.10-P-1006MMC | ||
| Start, post-start phase and warm-up enrichment, function | GF07.10-P-1007MMC | ||
| Rpm control, function | GF07.10-P-1008MMC | ||
| Alternator interface, function | GF07.10-P-1009MMC | ||
| Lambda control, function | GF07.10-P-1010MMC | ||
| Smooth running control, function | GF07.10-P-1011MMC | ||
| Thermal management, function | GF07.10-P-1012MMC | ||
| Torque coordination, function | GF07.10-P-1013MMC | ||
| Deceleration fuel shutoff, function | GF07.10-P-1014MMC | ||
| Knock control, function | GF07.10-P-1015MMC | ||
| Camshaft adjustment, function | GF07.10-P-1016MMC | ||
| Engine limp-home mode, function | GF07.10-P-1019MMC | ||
| On-board diagnosis, function | GF07.10-P-1020MMC | ||
| Engine start-stop function | With code (B03) ECO Start-stop function | GF07.10-P-1040MMC | |
| Forced induction, function | GF09.00-P-2000MMC | ||
| Exhaust treatment, function | GF14.00-P-3000MMC | ||
| Electronic accelerator function | GF30.20-P-3015MMC | ||
| On-board refueling vapor recovery function | With code (494) USA version | GF47.10-P-3004MMC | |
| Purging function | GF47.30-P-3015MMC | ||
| Purging system with leak test function | With code (494) USA version | GF47.30-P-3016MMC | |
| Overview of system components for gasoline injection and ignition system with direct injection | GF07.70-P-9998MMB |