Bosch Me711 Pinout Repack Direct

The ME7.1.1 is an evolution of the ME7.1, often utilizing more advanced microprocessors like the Infineon ST10F275 processors. Torque-Based Logic

To establish a connection for reading or writing (bench mode), the following basic pinout is standard for many Bosch ME7.1.1 variants: Main Ground Permanent Power (+12V) : Pin 62 (often shared with pins 3 and 21 for full wake-up) Switched Ignition (+12V) K-Line Data Communication CAN High/Low bosch me711 pinout

The Bosch ME711 ECU has a 121-pin connector, which is divided into three main sections: The ME7

| Pin | Function | Signal Type | Notes / Voltage | | :--- | :--- | :--- | :--- | | | MAF Signal (G70) | Analog Input | 0-5V (idle ~1.5V) | | 2 | IAT (G42) – Intake Air Temp | Analog Input | NTC sensor (shared ground) | | 4 | Lambda 1 (G39) – Pre-cat O2 | Analog Input | 0-1V (narrowband) or 0-5V (wideband LSU 4.2) | | 5 | Lambda 1 Heater Ground | Power Ground | Heater circuit return | | 10 | ECT (G62) – Coolant Temp | Analog Input | NTC sensor (Shared with gauge) | | 15 | CAN Low (Drive train) | Digital | 2.5V nominal, differential (to cluster/ABS) | | 16 | CAN High (Drive train) | Digital | 2.5V nominal, differential | | 19 | Knock Sensor 1 (G61) | AC Signal | Shielded wire | | 20 | Knock Sensor 2 (G66) | AC Signal | Shielded wire | | 24 | MAP Sensor Signal | Analog Input | Manifold pressure (0-5V) | | 27 | Power Supply (Constant 12V) | Power | Direct from battery (Terminal 30) | | 28 | Power Supply (Constant 12V) | Power | Direct from battery (Terminal 30) | | 29 | Power Supply (Constant 12V) | Power | Direct from battery (Terminal 30) | | 30 | Main Relay Control (Terminal 87) | Output | Switched +12V to relay coil (ground side switched) | | 31 | Injector Cylinder 1 (N30) | Output | Ground-switched peak & hold | | 32 | Injector Cylinder 2 (N31) | Output | Ground-switched | | 33 | Injector Cylinder 3 (N32) | Output | Ground-switched | | 34 | Injector Cylinder 4 (N33) | Output | Ground-switched | | 35 | Ignition Coil Output 1 (N70) | Digital Output | 5V logic to integrated igniter | | 36 | Ignition Coil Output 2 (N127) | Digital Output | 5V logic | | 37 | Ignition Coil Output 3 (N291) | Digital Output | 5V logic | | 38 | Ignition Coil Output 4 (N292) | Digital Output | 5V logic | | 40 | Tachometer (Terminal 1) | Output | Square wave (cluster signal) | | 41 | Sensor Ground (Analog) | Ground | Reference for TPS, MAP, MAF | | 42 | Sensor Ground (Analog) | Ground | Dedicated ground | | 43 | Power Ground (ECU Chassis) | Power Ground | Heavy gauge to engine block | | 44 | Power Ground (ECU Chassis) | Power Ground | Heavy gauge | | 45 | Power Ground (ECU Chassis) | Power Ground | Heavy gauge | | 49 | O2 Heater Control (Lambda 1) | PWM Output | Ground-side switch for heater | | 50 | N80 – EVAP Canister Valve | PWM Output | Solenoid control | | 51 | Brake Light Switch (Signal) | Digital Input | +12V when brake pressed | | 55 | Fuel Pump Relay Control (Terminal 87F) | Output | Ground-switched relay coil | | 57 | Clutch Pedal Switch (For cruise) | Digital Input | +12V when engaged | | 62 | Throttle Position Sensor (G79) – Signal 1 | Analog Input | 0.5V – 4.5V (closed-open) | | 63 | Throttle Position Sensor (G185) – Signal 2 | Analog Input | Inverse of G79 (4.5V – 0.5V) | | 64 | Accelerator Pedal (G79) – Signal 1 | Analog Input | Driver demand (0.5V – 4.5V) | | 65 | Accelerator Pedal (G185) – Signal 2 | Analog Input | Inverse of pedal 1 | | 68 | +5V Sensor Supply | Power | To TPS, MAP, pedal sensors | | 71 | +5V Sensor Supply | Power | To TPS, MAP (secondary rail) | | 73 | Camshaft Position Sensor (G40) | Hall Effect Input | 0-5V square wave | | 76 | Starter Signal (Terminal 50) | Digital Input | +12V during cranking | | 77 | Speed Signal (VSS) | Digital Input | From ABS or cluster (CAN also used) | | 78 | Engine Speed (G28) – Crank Sensor | Variable Reluctance | AC sine wave (2 wires – pin 78 & 79) | | 79 | Engine Speed (G28) – Ground/Shield | Ground | Ground for crank sensor shield | | 80 | Ignition Switch (Terminal 15) | Digital Input | +12V when key on | | 92 | Alternator Excitation (DFM) | Digital Input | Monitors alternator load | | 94 | A/C Compressor Request | Digital Input | From HVAC unit | | 95 | A/C Compressor Control | Output | To compressor relay (ground switch) | | 103 | Secondary Air Injection (SAI) Relay | Output | Ground-switched relay | | 105 | Radiator Fan (Low Speed) | Output | To fan control module | | 106 | Radiator Fan (High Speed) | Output | To fan control module | | 108 | OBD-II Diagnostic K-Line (ISO 9141) | Bi-directional | 0-12V (Legacy diagnostics) | | 121 | Main Power Ground | Power Ground | Final high-current ground return | bosch me711 pinout

An interesting technical feature of the Bosch ME7.1.1 pinout is its support for , which allows for a full low-level recovery or "cloning" of the ECU by grounding a specific internal pin during power-up. Key Highlight: The "Boot Pin" Trick

On many ME7.1.1 boards, the boot pin is located near the processor (often a C167 or ST10 series).