Entering is critical for full EEPROM or Flash reading when the standard OBD port is blocked. For ME7.1.1, this typically involves grounding a specific "boot pin" on the internal circuit board.

| 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 |