Pin Type Description / Signal type Connection /Measuring notes
1 A Signal, oxygen sensor heater Connector, DMW oxygen sensor 1 2 A Idle actuator closing winding Idle actuator 3 A Fuel injector cyl. 1 Fuel injector cyl. 1 4 A Fuel injector cyl. 4 Fuel injector cyl. 4 5 A Fuel injector cyl. 6 Fuel injector cyl. 6 6 M Ground, fuel injector Ground point 7 A Fuel injector cyl. 7 Fuel injector cyl. 7 8 A Defect lamp (USA only) Instrument cluster 9 E Start signal Start relay 10 E Antitheft alarm system signal (EWS) Electronic immobilizer control unit (EWS) 11 A A/C compressor signal Heating and A/C control module 12 E Signal, terminal 50 Ignition switch 13 E Knock sensor signal Knock sensor 14 Not used 15 Not used 16 A Intake air temperature Intake air temperature sensor 17 M Ground, hot film air mass meter Hot film air mass meter 18 E Oxygen sensor signal Heated oxygen sensor 2 in front of catalytic 19 E Oxygen sensor signal converter 20 A Crankshaft sensor signal (speed and position) Heated oxygen sensor 1 in front of catalytic 21 A Camshaft sensor signal (cylinder reference) converter 22 A Ignition signal cyl. 6 Crankshaft sensor 23 A Ignition signal cyl. 3 Hall sensor, camshaft 24 A Ignition signal cyl. 7 Ignition coil cyl. 6 25 A Ignition signal cyl. 2 Ignition coil cyl. 3 26 E Terminal 30 Ignition coil cyl. 7 27 A DME relay Ignition coil cyl. 2 28 M Ground for electronics and sensor shield Fuse carrier, engine electronics 29 A Idle actuator opening winding DME relay 30 A Signal, oxygen sensor heater Ground connector 31 A Fuel injector cyl. 5 Idle actuator 32 A Fuel injector cyl. 8 Heated oxygen sensor 1 in front of catalytic 33 A Fuel injector cyl. 3 Fuel injector cyl. 5 34 M Ground, remaining output stages Fuel injector cyl. 8 35 A Fuel injector cyl. 2 Fuel injector cyl. 3 36 A Signal, A/C compressor relay Ground point 37 Not used Fuel injector cyl. 2 38 Not used Heating and A/C control module 39 Not used 40 E Knock sensor signal 41 E Knock sensor signal 42 E Fuel reserve signal Knock sensor 43 Not used Knock sensor 44 E Throttle potentiometer signal Instrument cluster 45 A Signal, hot film air mass meter 46 M Signal, oxygen sensor Throttle potentiometer 47 Not used Hot film air mass meter 48 Not used Oxygen sensors 49 A Ignition signal cyl. 1 50 A Ignition signal cyl. 5 51 A Ignition signal cyl. 4 Ignition coil cyl. 1 52 A Ignition signal cyl. 8 Ignition coil cyl. 5 53 A Throttle potentiometer + 5 V supply Ignition coil cyl. 4 Ignition coil cyl. 8 54 E Terminal 87 Throttle potentiometer 55 M Ignition ground 56 E Terminal 15 Fuse F1 57 Not used Ground point 58 Not used Ignition switch 59 E Signal input Characteristic map, cooling 60 E Programming voltage input 61 E Signal input Tank ventilation valve Characteristic map, cooling 62 Not used Diagnostic connector 63 E EKP relay Charcoal filter valve 64 Not used 65 Not used Fuel pump relay 1 66 Not used 67 Not used 68 Not used 69 E Air conditioning system standby signal 70 E Knock sensor signal 71 M Control unit ground Heating and A/C control module 72 Not used Knock sensor 73 Not used Ground connector 74 E Coolant temperature 75 Not used 76 E Oxygen sensor signal Dual temperature switch 77 E Oxygen sensor signal 78 E Crankshaft sensor signal (speed and position) Heated oxygen sensor 2 behind catalytic converter 79 E Rear right speed signal Heated oxygen sensor 1 behind catalytic converter 80 A TD signal (engine speed) Crankshaft sensor 81 Not used ABS/ASC control unit 82 Not used Connector TD signal 83 A Injection signal 84 Not used 85 E/A CAN bus low Integrated electronic control unit (IKE) 86 E/A CAN bus high 87 Not used AGS transmission control unit 88 E/A Diagnostic link TXD AGS transmission control unit