Bosch Me711 Pinout
Are you working on an Audi V8 or a VR6, and are you trying to , diagnose , or swap the engine? Let me know, and I can narrow down the pinout details for you. Share public link
| 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 |
With that said, it's crucial to note that . Slight variations exist between different car manufacturers, engine configurations, and specific ECU software versions. The details compiled below represent a standard reference, but they should always be verified against the official documentation for your specific vehicle.
Understanding the Bosch ME711 pinout is essential for working with engine control systems. This write-up provides a comprehensive guide to the ME711 pinout, its features, and applications. With this information, enthusiasts, mechanics, and developers can effectively diagnose and repair issues related to the ECU.
If you’re working on a VAG project (like an R32, 2.7T, or VR6 swap) and need to connect your to a bench power supply for flashing or EEPROM work, here are the essential pinouts. Standard Bench Connections: bosch me711 pinout
Release the ground after 3 seconds to open the bootloader interface. 📊 Complete 121-Pin Out Breakdown
| Pin | Function | Protocol | |------|-----------------------------|----------------------| | | K-Line (Diagnostic) | ISO 9141-2 (7 baud init) | | T6 | CAN-High | 500 kbps drive train CAN | | T5 | CAN-Low | 500 kbps | | T7 | Clutch Pedal Switch | Digital input (manual trans) | | T8 | Brake Pedal Switch (NC) | To brake light circuit |
Many technicians reference pin numbers by the ECU schematic (1 through 121 consecutively). For simplicity, we will use the consecutive numbering (1 to 121), as this is how tuning software (WinOls, ECM Titanium) and boot pin diagrams refer to them.
Which are you planning to use?
The "lay-by" pins for these connections are located in the lower part of the ECU circuit board. Bosch ME7.1.1 Pinout and Connections | PDF - Scribd
| Pin | Function | Connected To | |------|-----------------------------|-----------------------------| | | Pedal Position Sensor 1 Signal | Accelerator pedal (G79) | | 66 | Pedal Position Sensor 2 Signal | Accelerator pedal (G185) | | 67 | Pedal Sensor 5V Supply | Pedal potentiometers | | 68 | Pedal Sensor Ground | Pedal return | | 73 | Throttle Motor Control (+) (Drive) | Throttle body (V60) | | 72 | Throttle Motor Control (-) (Return) | Throttle body (V60) | | 80 | Throttle Position Sensor (for motor feedback) | Internal throttle plate sensor |
For standard bench connections, the following pins are used: : (Terminal 30 / Constant Power) Pin 21 : (Terminal 15 / Ignition Power) Pin 1 & 2 : Ground (Terminal 31) Pin 43 : K-Line (Data Communication) Pin 60 : CAN High Pin 58 : CAN Low Pin 62 : Often used as an additional signal in some variants Connection for Boot Mode & Programming
For advanced operations like IMMO off or deep recovery, the ECU often needs to be put into . This typically involves: Are you working on an Audi V8 or
In summary, the Bosch ME711 pinout is a topic filled with nuance. While many core connections are standardized, the only way to be 100% confident is to cross-reference community knowledge with official manufacturer documentation for your specific vehicle.
Entry into boot mode typically requires grounding a specific point on the ECU motherboard—often a "lay-by" pin or a specific pad on the ST10 processor—while powering the unit on.
Are you trying to ? Which tuning tool or hardware interface are you using? Share public link
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 This write-up provides a comprehensive guide to the