Bosch Me711 Pinout
The ME7.1.1 runs on voltage dividers and Hall effects. Most sensors share a 5V reference.
| Pin | Function | Voltage Range | Notes | |------|-----------------------------|----------------------|---------------------------------------------| | 60 | 5V Sensor Supply | 5.00V ±0.1V | Powers TPS, MAP, Cam sensor | | 77 | Sensor Ground Return | 0V | Reference for all 5V sensors | | 90 | Engine Speed (RPM) Sensor | AC sine wave | 58-tooth crank wheel (G4/G28) | | 91 | RPM Sensor Ground | Shield return | Do not ground externally | | 86 | Camshaft Position Sensor | 5V Hall signal | For sequential injection (G40) | | 89 | Intake Air Temp (IAT) | 0-5V thermistor | Integrated in MAF or manifold | | 101| Manifold Absolute Pressure | 0-5V linear | 1.8T uses 2.5 bar MAP (G71) | | 97 | Throttle Position Sensor (TPS) Signal | 0.3V-4.7V | Drive-by-wire pedal? No—this is main throttle plate | | 98 | TPS Ground (Track 1) | 0V | TPS internal ground | | 99 | TPS Supply (Track 1) | 5V | From pin 60 |
| Pin | Function | Wire Color (Typical) | |------|-------------------------------|----------------------| | 74 | Engine Coolant Temp (ECT) | Brown/Red (or Blue) | | 59 | Knock Sensor 1 (Cyl 1-2) | Shielded – White/Black | | 96 | Knock Sensor 2 (Cyl 3-4) | Shielded – White/Blue | | 75 | Primary Oxygen Sensor (Pre-cat) | Gray (signal) | | 76 | O2 Sensor Heater Control | Black (ground side switched) | | 100| Secondary Oxygen Sensor (Post-cat) | Gray/Yellow | bosch me711 pinout
| Pin | Function | Protocol | |------|-----------------------------|----------------------| | 104| 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 |
🔌 Note: If you are building a bench harness to flash the ECU, you only need pins 62 (switched 12V), T2/T3 (constant 12V), T1 (ground), and 104 (K-line). The ME7
Here's a brief explanation of some key signals:
To bench-flash this ECU with tools like Galletto, Kess, or Neubauer, build a minimal harness: 🔌 Note: If you are building a bench
⚡ Bench power: Use a 10A+ 12V bench supply. The ME7.1.1 draws ~1.5A idle but 5-7A when driving injectors/coils during a flash.
The Bosch ME7.1 (Motronic Electronic 7.1) is a highly successful Engine Control Unit (ECU) produced by Robert Bosch GmbH. It represents a significant evolution in engine management technology, widely used throughout the late 1990s and 2000s. Unlike its predecessor (ME2.x or ME7.0), the ME7.1 utilizes a faster processor (usually the Infineon C167) and supports more complex torque-based engine management strategies.
This guide focuses on the standard hardware configuration and pinout for the ME7.1, typically found in vehicles such as the Audi A4 (B5/B6), VW Passat B5, and various Porsche and Volvo models.
