210 lines
13 KiB
Markdown
210 lines
13 KiB
Markdown
# HOWTO M111 on microRusEFI
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See also [Mercedes-OEM-ECU](Mercedes-OEM-ECU)
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See also [Custom-M111-Full-Engine-Harness](Custom-M111-Full-Engine-Harness)
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See also [OEM-harness-connectors#mercedes](OEM-harness-connectors#mercedes)
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* Important suggestion: use Honda accelerator pedal position sensor (PPS) in the engine bay not Mercedes pedal position sensor
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* Honda OE part number: 37971-RBB-003, 37971-PZX-003, 37971-RCA-A01, 37971-RDA-A01
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* Replace Part Number: 5S8776, APS147, PPS1046, 72-7080, 1802-300281, 2-80046, SU10238, 699-199, 699199.
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* Connector: 6-way Pigtail for Honda Acura Throttle pedal sensor
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* Less important trick: 4 wire GM MAP+IAT
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* Less important trick: fuel pressure mod
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[Making my 190e More Fun (M111 SC Swap) - Forum](https://rusefi.com/forum/viewtopic.php?t=1692)
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[Case info - Forum](https://rusefi.com/forum/viewtopic.php?p=39163#p39163)
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[OEM C230 and SLK230 Wiring Diagrams](Mercedes-C230-and-SLK230)
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## W202 C180 M111.921 with ME2.1
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Getting started with the W202 ME2.1 ECU connector
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This ECU has a CAR connector with 145 pins. Diagram with diagnostic pin assignment can be found [here](Images/MB_ME2.1.jpeg)
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How to read the following table:
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Connector : Connector from A to F on the harness.
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Pin: Pin number of the connector.
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Name: this field was filled from the M111.921 wiring diagram.
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Function: some human readable text.
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ME2.1 Description: Based on me2.1 documenation what I have found for Alfa Rome.
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MRE pin: Where to connect the pin (wiring example).
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Comments: extra info that I learned during wiring in the ECU.
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| Connector | Pin Number | Name | Function | ME2.1 Description | MRE pin | Comments |
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| --------- | ---------- |----- | -------- | ----------------- | ----------------------------- | --------- |
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| A | 1 | NC | NC | NC | NC |
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| A | 2 | 12V ACC | Supply | Supply | MRE pin 1,5 | 12v Supply when ignition is on.
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| A | 3 | KL31(GND) | Ground | Ignition earth |MRE pin 2,6 | Supply earth
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| A | 4 | NC | NC | NC | NC |
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| A | 5 | O2 LSS | O2 Heater | Lambda sensor heater | NC | Only if you plan to use factory NB O2 sensor
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| A | 6 | FAN Control | PWM to Fan control module | Relay for 1st Fan Control | MRE pin 33 (GP3) | On some models this is PWM output and SAM ECU controls the FAN based on this. Note a 10hz/30% Duty is neaded to make the ecu happy, higher duty equals higher fan speed. 30% is off.
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| A | 7 | KL31(GND) | Ignition Gnd | Ignition earth| MRE pin 2,6 |
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| A | 8 | KL31(GND) | Sensors Gnd | Electronic earth (for sensors) | MRE pin 2,6 |
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| Connector | Pin Number | Name | Function | ME2.1 Description | MRE pin | Comments |
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| --------- | ---------- |----- | -------- | ----------------- | ----------------------------- | --------- |
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| B | 1 | NC | NC | NC | |
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| B | 2 | NC | NC | NC | |
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| B | 3 | Diag5 | NC | Programming | NC |
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| B | 4 | 12V KL30 | Permanent 12v supply | Battery | |
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| Connector | Pin Number | Name | Function | ME2.1 Description | MRE pin | Comments |
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| --------- | ---------- |----- | -------- | ----------------- | ----------------------------- | --------- |
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| C | 1 | NC | | NC | |
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| C | 2 | NC | | NC | |
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| C | 3 | NC | | NC | |
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| C | 4 | NC | | NC | |
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| C | 5 | NC | | NC | |
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C | 6 | NC | | NC | |
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C | 7 | NC | | NC | |
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C | 8 | NC | | NC | |
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C | 9 | NC | | NC | |
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C | 10 | NC | | NC | |
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C | 11 | NC | | NC | |
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C | 12 | NC | | NC | |
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C | 13 | NC | | NC | |
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| C | 14 | NC | | NC | |
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| C | 15 | NC | | NC | |
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| C | 16 | NC | | NC | |
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| C | 17 | NC | | NC | |
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| C | 18 | NC | | NC | |
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| C | 19 | NC | | NC | |
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| C | 20 | NC | | NC | |
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| C | 21 | EVAP Solenoid | Low side switch | Fuel vapour recovery solenoid valve| MRE pin 3 (LS2) | Control this pin via FSIO.
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| C | 22 | Supply PPS1 | 5V supply for PPS | Supply for potentiometer - 1 accelerator pedal|MRE pin 44 (5V)|
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| C | 23 | GND PPS1 | Ground for PPS | Earth for potentiometer - 1 accelerator pedal |MRE pin 21 (GND)|
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| C | 24 | Signal PPS1 | Pedal Position1 | Signal for potentiometer - 1 accelerator pedal|MRE pin 31 (AV3)|
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| C | 25 | Signal PPS2 | Pedal Position2 | Signal for potentiometer - 2 accelerator pedal|MRE pin 30 (AV7)|
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| C | 26 | GND PPS2 | Ground for PPS | Earth for potentiometer - 2 accelerator pedal |MRE pin 21 (GND)|
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| C | 27 | Supply PPS2 | 5V supply for PPS | Supply for potentiometer - 2 accelerator pedal|MRE pin 44 (5V)|
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| C | 28 | NC | | Sport throttle response on warning light | |
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C | 29 | Fuel Pump | Low Side switch for FP relay | Fuel pump relay | MRE pin 35 (GP1)|
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C | 30 | NC | | NC | |
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C | 31 | O2 Signal GND | NB Heated O2 Signal GND | Lambda sensor earth | |
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C | 32 | O2 Signal | NB Heated o2 Signal | Lambda sensor signal| |
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C | 33 | NC | | NC | |
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C | 34 | NC | | NC | |
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C | 35 | NC | | NC | |
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C | 36 | NC | | NC | |
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C | 37 | NC | | NC | |
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C | 38 | DIAG | Tacho out | RPM Signal | | I send information over CAN.
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C | 39 | DIAG | K line | Diagnostic connection (line K) | |
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C | 40 | SAM? | | NC | |
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| Connector | Pin Number | Name | Function | ME2.1 Description | MRE pin | Comments |
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| --------- | ---------- |----- | -------- | ----------------- | ----------------------------- | --------- |
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D | 1 | NC | function | MRE pin | Comments
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D | 2 | NC | | Relay for cooling fan 2 nd speed | |
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D | 3 | Starter LSS | Starter Relay| NC | MRE pin - | I use just and external switch.
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D | 4 | NC | | NC | |
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D | 5 | NC | | CAE gear selector switch | |
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D | 6 | NC | | NC | |
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D | 7 | NC | | NC | |
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D | 8 | NC | | NC | |
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D | 9 | NC | | NC | |
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D | 10 | NC | | NC | |
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D | 11 | CAN_H | Can High | CAN line "high" | MRE pin 48 (CANH) |
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D | 12 | CAN_L | Can Low | CAN line "low" | MRE pin 47 (CANL) |
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D | 13 | NC | | Speedometer signal | |
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D | 14 | NC | | Brake lights switch | |
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D | 15 | NC | | NC | |
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D | 16 | NC | | NC | |
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D | 17 | NC | | CAE recognition | |
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D | 18 | NC | | NC | |
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D | 19 | NC | | Clutch Pedal | |
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D | 20 | NC | | Cruise Control + | |
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D | 21 | NC | | Cruise Control - | |
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D | 22 | NC | | Cruie Control recall | |
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D | 23 | NC | | Break Sw | |
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D | 24 | NC | | Cruise Control deactivation | |
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| Connector | Pin Number | Name | Function | ME2.1 Description | MRE pin | Comments |
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| --------- | ---------- |----- | -------- | ----------------- |--------------------| --------- |
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E | 1 | NC | | Injector cyl. 3 | |
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E | 2 | NC | | Injector cyl. 6 | |
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E | 3 | NC | | NC | |
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E | 4 | VVT LSS | VVT coil LSS | Air conditioning compressore relay feed | MRE pin 7 (LS1) | On My variant this is VVT, on other OEMs it is compressore clutch.
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E | 5 | NC | | NC | |
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E | 6 | NC | | NC | |
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E | 7 | NC | | NC | |
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E | 8 | NC | | NC | |
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E | 9 | NC | | NC | |
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E | 10 | NC | | Cruise control on warning light| |
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E | 11 | NC | | NC | |
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E | 12 | NC | | NC | |
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E | 13 | Injector 4 | Injector 4 | Injector cyl. 2 | MRE pin 42 (INJ4) |
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E | 14 | Injector 2 | Injector 2 | Injector cyl. 5 | MRE pin 38 (INJ2) |
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E | 15 | NC | | Air conditioning pressure switch 1st stage | |
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E | 16 | NC | | NC | |
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E | 17 | Oil Switch | Oil Level Switch | Air conditioning pressure switch 2nd stage | MRE pin | In case this is used, it must be connected to a temperature input. This way we have a pull up inside MRE and this switch would drive the line low.
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E | 18 | NC | | NC | |
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E | 19 | NC | | NC | |
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E | 20 | NC | | NC | |
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E | 21 | NC | | Air conditioning request switch | |
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E | 22 | NC | | NC | |
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E | 23 | NC | | Sport throttle response switch | |
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E | 24 | NC | | Sport throttle response switch earth | |
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E | 25 | Injector 1 | Injector 1 | Injector cyl. 1 | MRE pin 37 (INJ1) |
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E | 26 | Injector 3 | Injector 3 | Injector cyl. 4 | MRE pin 41 (INJ3) |
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E | 27 | NC | | NC | |
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E | 28 | CLT GND | Signal GND | Coolant temperature sensor earth | MRE pin 21 |
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E | 29 | CLT Signal | CLT Signal | Coolant temperature sensor signal| MRE pin 18 (AT1) |
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E | 30 | NC | | NC | |
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E | 31 | TPS1 | TPS1 signal |Potentiometer - 1 butterfly casing| MRE pin 20 (AV5) |
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E | 32 | TPS GND | TPS GND |Earth for potentiometer 1-2 butterfly casing | MRE pin 21 |
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E | 33 | TPS Supply | 5V TPS supply | Supply for potentiometer 1-2 butterfly casing| MRE pin 44 (5V) |
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E | 34 | TPS2 | TPS2 signal | Potentiometer - 2 butterfly casing | MRE pin 25 (AV2) |
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E | 35 | NC | | NC | |
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E | 36 | NC | | NC | |
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E | 37 | CKP- | VR- | Rpm sensor (-) | MRE pin 46 (VR-) |
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E | 38 | CKP+ | VR+ | Rpm sensor (+) | MRE pin 45 (VR+) |
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E | 39 | CAM- | CAM Sensor GND | Timing sensor earths| MRE pin 21 | CAM supply in factory harness 12V
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E | 40 | CAM+ | CAM Signal | Timing sensor signal | MRE pin 25 (CAM) |
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E | 41 | KNOCK- | |Earth for detonation sensor 1 (cylinders 1-4-5)| MRE pin |
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E | 42 | KNOCK+ | |Signal for detonation sensor 1| MRE pin | Usable with diy external circuit.
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E | 43 | NC | |Earth for detonation sensor 2 (cylinders 2-3-6)| |
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E | 44 | NC | |Signal for detonation sensor 2 | |
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E | 45 | MAF Pin 1 | IAT Signal | Air temperature sensor | MRE pin 23 (AT2) |
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E | 46 | MAF Pin 4 | 5V Supply | Flow meter - reference voltage 5V | MRE pin 39 |
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E | 47 | MAF Pin 5 | MAF Signal | Output voltage (signal) - flow meter | MRE pin 24 (AT3) |
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E | 48 | MAF Pin 3 | Signal GND | Earth - flow meter | MRE pin 21 |
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ToDo: add MRE pin assignment for IGN
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| Connector | Pin Number | Name | Function | ME2.1 Description | MRE pin | Comments |
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| --------- | ---------- |----- | -------- | ----------------- | ----------------------------- | --------- |
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F | 1 | ETB- | | Butterfly casing motor integrated with D.V.L. (-) |MRE pin 8 (ETB-)|
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F | 2 | ETB+ | | Butterfly casing motor integrated with D.V.L. (+) | MRE pin 4 (ETB+)|
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F | 3 | NC | | NC | |
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F | 4 | NC | | NC | |
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F | 5 | NC | |Ignition coil for cyl. 6 | |
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F | 6 | NC | |Ignition coil for cyl. 2 | |
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F | 7 | NC | | NC | |
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F | 8 | NC | | Earth | |
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F | 9 | NC | | NC | |
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F | 10 | NC | | NC | |
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F | 11 | NC | | NC | |
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F | 12 | NC | | NC | |
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F | 13 | IGN1 | | Ignition coil for cyl. 4|| OEM coils require external igniter!!
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F | 14 | NC | | NC | |
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F | 15 | KL31 (GND) | | NC | |
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F | 16 | NC | | NC | |
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F | 17 | NC | | Ignition coil for cyl. 3 | |
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F | 18 | NC | | NC | |
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F | 19 | NC | |Ignition coil for cyl. 5| |
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F | 20 | IGN2 | |Ignition coil for cyl. 1| | OEM coils require external igniter!!
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F | 21 | NC | |Operation of injection warning light| |
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