Bosch Me711 Pinout May 2026
| Pin | Function | Signal Type | Connected To | |------|-----------------------------|----------------------|---------------------------| | | Injector Cylinder 1 | Switched ground | Fuel injector (N30) | | 84 | Injector Cylinder 2 | Switched ground | Fuel injector (N31) | | 83 | Injector Cylinder 3 | Switched ground | Fuel injector (N32) | | 82 | Injector Cylinder 4 | Switched ground | Fuel injector (N33) | | 94 | Ignition Output 1 (Coil 1&4) | Logic signal | Ignition amplifier (N122) | | 95 | Ignition Output 2 (Coil 2&3) | Logic signal | Ignition amplifier (N122) | | 107 | Fuel Pump Relay Control | 12V output | Relay (J17) – activates on crank | 3. Sensors (Inputs) The ME7.1.1 runs on voltage dividers and Hall effects. Most sensors share a 5V reference.
This information is for educational purposes. Modifying or repinning an ECU can cause engine damage if done incorrectly. Always verify with factory documentation for your specific vehicle. Keywords incorporated: bosch me711 pinout, ME7.1.1 wiring, Bosch ME711 connector, Audi 1.8T ECU pinout, bench harness ME711.
Always overlay your car’s specific wiring diagram (from Bentley or ELSA), because while the pin function is standard, wire colors sometimes change between an Audi TT (8N) and a VW Golf MK4. When in doubt, probe it out. bosch me711 pinout
Introduction The Bosch ME7.1.1 (often shortened to ME711 in casual conversation, though the correct industrial suffix is 7.1.1) is one of the most iconic Engine Control Units (ECUs) from the late 1990s and early 2000s. Found predominantly in Audi, Volkswagen, Seat, and Skoda models with 1.8T 20V engines (codes like AEB, ATW, AWM, and B5), this ECU represents a sweet spot between analog simplicity and early drive-by-wire sophistication.
| Pin | Function | Wire Color (Typical VAG) | Notes | |------|-----------------------|--------------------------|------------------------------------------| | | Switched B+ (Terminal 15) | Black/Violet | Ignition-on power (from relay) | | T2 | Permanent B+ (Terminal 30) | Red/Black | Direct to battery (fused) | | T3 | Permanent B+ | Red/Black | Second main power feed | | T1 | ECU Main Ground | Brown | Chassis ground (near battery tray) | | T3 | ECU Ground (Sensor return) | Brown/Yellow | Analog sensor ground | | 50 | Power Supply Ground | Brown | Internal logic ground | ⚠️ Warning: Pins T1 and T3 are critical. A poor ground here causes erratic idle, dead throttle, and crank/no-start. 2. Ignition & Fuel Control (Actuators) These pins control the engine’s combustion events. | Pin | Function | Signal Type |
| Feature | ME7.1 (rare) | ME7.1.1 (common) | |-------------------------|-------------------|----------------------| | Injector pins | 85-88 only | 82-85 | | Extra 5V sensor supply | No | Yes (pin 60) | | Secondary O2 sensor | Not pinned | Pin 100 | | Electronic throttle | Sometimes cable | Always drive-by-wire |
| Pin | Function | Voltage Range | Notes | |------|-----------------------------|----------------------|---------------------------------------------| | | 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 | 4. Drive-by-Wire (Electronic Throttle) Unlike older ME5.2, the ME7.1.1 fully manages the throttle without a cable. The pedal has its own dedicated sensor. This information is for educational purposes
For tuners diagnosing a no-start condition, wiring a standalone harness, or repinning an ECU for a swap,
