| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|
| 1 | E | Signal Oxygen sensor heater in front of catalytic converter | Heated oxygen sensor 1 in front of catalytic converter |
| | | |
| 2 | | Not used | |
| | | |
| 3 | | Not used | |
| | | |
| 4 | | Not used | |
| | | |
| 5 | | Not used | |
| | | |
| 6 | | Not used | |
| | | |
| 7 | E | Signal Oxygen sensor heater behind catalytic converter | Heated oxygen sensor 1 in front of catalytic converter |
| | | |
| 8 | | Not used | |
| | | |
| 9 | | Not used | |
| | | |
| 10 | | Not used | |
| | | |
| 11 | | Not used | |
| | | |
| 12 | | Not used | |
| | | |
| 13 | E | Signal Oxygen sensor heater in front of catalytic converter | Heated oxygen sensor 2 in front of catalytic converter |
| | | |
| 14 | E | Signal Oxygen sensor before catalytic converter | Heated oxygen sensor 1 in front of catalytic converter |
| | | |
| 15 | E | Signal Oxygen sensor before catalytic converter | Heated oxygen sensor 2 in front of catalytic converter |
| | | |
| 16 | E | Signal Oxygen sensor after catalytic converter | Heated oxygen sensor 1 behind catalytic converter |
| | | |
| 17 | | Not used | |
| | | |
| 18 | E | Signal Oxygen sensor after catalytic converter | Heated oxygen sensor 2 behind catalytic converter |
| | | |
| 19 | E | Signal Oxygen sensor heater behind catalytic converter | Heated oxygen sensor 2 behind catalytic converter |
| | | |
| 20 | M | Ground Oxygen sensor before catalytic converter | Heated oxygen sensor 1 in front of catalytic converter |
| | | |
| 21 | M | Ground Oxygen sensor before catalytic converter | Heated oxygen sensor 2 in front of catalytic converter |
| | | |
| 22 | M | Ground Oxygen sensor after catalytic converter | Heated oxygen sensor 1 behind catalytic converter |
| | | |
| 23 | E | Signal Activation, main relay | DME relay |
| | | |
| 24 | M | Ground Oxygen sensor after catalytic converter | Heated oxygen sensor 2 behind catalytic converter |
| | | |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|
| 1 | E | Signal Air mass sensor | Hot-film mass air flow sensor |
| | | |
| 2 | E | Signal Exhaust camshaft sensor 1 | Camshaft position sensor II |
| | | |
| 3 | | Not used | |
| | | |
| 4 | | Not used | |
| | | |
| 5 | E | Signal Inlet camshaft sensor 1 | Camshaft position sensor I |
| | | |
| 6 | | Not used | |
| | | |
| 7 | A | Voltage supply Electric throttle actuator | Electric throttle actuator |
| | | |
| 8 | E | Signal Crankshaft position sensor | Crankshaft position sensor |
| | | |
| 9 | | Not used | |
| | | |
| 10 | E | Signal Electric throttle actuator | Electric throttle actuator |
| | | |
| 11 | | Not used | |
| | | |
| 12 | | Not used | |
| | | |
| 13 | | Not used | |
| | | |
| 14 | | Not used | |
| | | |
| 15 | M | Ground Exhaust camshaft sensor 1 | Camshaft position sensor II |
| | | |
| 16 | | Not used | |
| | | |
| 17 | M | Ground Air mass sensor | Hot-film mass air flow sensor |
| | | |
| 18 | M | Ground Inlet camshaft sensor 1 | Camshaft position sensor I |
| | | |
| 19 | E | Signal Electric throttle actuator | Electric throttle actuator |
| | | |
| 20 | M | Ground Electric throttle actuator | Electric throttle actuator |
| | | |
| 21 | E | Ground Crankshaft position sensor | Crankshaft position sensor |
| | | |
| 22 | A | Signal Intake air temperature | Intake air temperature sensor |
| | | |
| 23 | M | Ground Intake air temperature | Intake air temperature sensor |
| | | |
| 24 | A | Signal Coolant temperature | Engine coolant temperature sensor |
| | | |
| 25 | M | Ground Coolant temperature | Engine coolant temperature sensor |
| | | |
| 26 | | Not used | |
| | | |
| 27 | A | Signal Engine oil temperature | Oil temperature sensor |
| | | |
| 28 | M | Ground Engine oil temperature | Oil temperature sensor |
| | | |
| 29 | A | Signal Knock sensor | Knock sensor |
| | | |
| 30 | A | Signal Knock sensor | Knock sensor |
| | | |
| 31 | A | Signal Knock sensor | Knock sensor |
| | | |
| 32 | A | Signal Knock sensor | Knock sensor |
| | | |
| 33 | E | Signal Cyl. 1 fuel injection valve | Cyl. 1 fuel injection valve |
| | | |
| 34 | E | Signal Cyl. 2 fuel injection valve | Cyl. 2 fuel injection valve |
| | | |
| 35 | E | Signal Cyl. 3 fuel injection valve | Cyl. 3 fuel injection valve |
| | | |
| 36 | E | Signal Cyl. 4 fuel injection valve | Cyl. 4 fuel injection valve |
| | | |
| 37 | E | Signal Cyl. 5 fuel injection valve | Cyl. 5 fuel injection valve |
| | | |
| 38 | E | Signal Cyl. 6 fuel injection valve | Cyl. 6 fuel injection valve |
| | | |
| 39 | | Not used | |
| | | |
| 40 | E | Signal VANOS inlet valve | VANOS inlet valve |
| | | |
| 41 | E | Signal VANOS outlet valve | VANOS outlet valve |
| | | |
| 42 | E | Signal Evaporative emission valve | Evaporative emission valve |
| | | |
| 43 | E | Signal Electric throttle actuator | Electric throttle actuator |
| | | |
| 44 | E | Signal Electric throttle actuator | Electric throttle actuator |
| | | |
| 45 | E | Signal Characteristic map cooling | Thermostat, characteristic map cooling |
| | | |
| 46 | E | Signal Close idle speed control valve | Idle speed control valve |
| | | |
| 47 | E | Signal Open idle speed control valve | Idle speed control valve |
| | | |
| 48 | M | Signal Shield, knock sensor | Shield, knock sensor |
| | | |
| 49 | E | Signal Valve, individual control intake system | Valve, individual control intake system |
| | | |
| 50 | | Not used | |
| | | |
| 51 | A | Activation, heating for fuel tank leak diagnosis module USA only | Diagnostic module, fuel tank leakage |
| | | |
| 52 | E | Signal Secondary air injection pump valve | Secondary air injection pump valve |
| | | |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|
| 1 | | Not used | |
| | | |
| 2 | | Not used | |
| | | |
| 3 | E | Signal Secondary air injection pump | Secondary air injection pump relay |
| | | |
| 4 | E | Signal Electric fan | Electric fan |
| | | |
| 5 | | Not used | |
| | | |
| 6 | | Not used | |
| | | |
| 7 | M | Ground Pedal-position sensor | Pedal-position sensor |
| | | |
| 8 | E | Signal Pedal-position sensor | Pedal-position sensor |
| | | |
| 9 | A | Voltage supply Pedal-position sensor | Pedal-position sensor |
| | | |
| 10 | E | Signal Fuel pump relay 1 | Fuel pump relay 1 |
| | | |
| 11 | | Not used | |
| | | |
| 12 | M | Ground Pedal-position sensor | Pedal-position sensor |
| | | |
| 13 | E | Signal Pedal-position sensor | Pedal-position sensor |
| | | |
| 14 | A | Voltage supply Pedal-position sensor | Pedal-position sensor |
| | | |
| 15 | | Not used | |
| | | |
| 16 | | Not used | |
| | | |
| 17 | A | Speed signal | Data link connector |
| | | |
| 18 | A | Signal Valve, exhaust flap M54 3.0 l only | Valve, exhaust flap |
| | | |
| 19 | | Not used | |
| | | |
| 20 | A | Activation, valve for fuel tank leak diagnosis module USA only | Diagnostic module, fuel tank leakage |
| | | |
| 21 | | Not used | |
| | | |
| 22 | E | Signal Processed wheel speed, rear right | ABS/ASC unit ABS/DSC unit |
| | | |
| 23 | A | Signal Clutch pedal position switch | Clutch pedal position switch |
| | | |
| 24 | E | Signal Brake light switch | Light switching center control unit |
| | | |
| 25 | | Not used | |
| | | |
| 26 | E | Terminal 15 | Fuse F29 |
| | | |
| 27 | E | Data link MFL | Volute spring |
| | | |
| 28 | E | Signal Brake light switch | Brake light switch |
| | | |
| 29 | E | Signal Relay, A/C compressor | Relay, A/C compressor |
| | | |
| 30 | A | Activation, pump for fuel tank leak diagnosis module USA only | Diagnostic module, fuel tank leakage |
| | | |
| 31 | | Not used | |
| | | |
| 32 | E/A | Signal Data link TXD | Data link connector |
| | | |
| 33 | E | Electronic vehicle immobilization | Electronic immobilizer control unit |
| | | |
| 34 | | Not used | |
| | | |
| 35 | | Not used | |
| | | |
| 36 | E/A | Signal CAN bus high | Connector, CAN bus |
| | | |
| 37 | E/A | Signal CAN bus low | Connector, CAN bus |
| | | |
| 38 | M | Ground Coolant outlet temperature | Temperature sensor |
| | | |
| 39 | A | Signal Coolant outlet temperature | Temperature sensor |
| | | |
| 40 | | Not used | |
| | | |