| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | E | Oxygen sensor heater signal | Heated oxygen sensor I behind catalytic converter |
| | | |
| 2 | | Not used | |
| | | |
| 3 | A | Cyl. 1 fuel injection valve | Cyl. 1 fuel injection valve |
| | | |
| 4 | A | Cyl. 3 fuel injection valve | Cyl. 3 fuel injection valve |
| | | |
| 5 | A | Cyl. 2 fuel injection valve | Cyl. 2 fuel injection valve |
| | | |
| 6 | M | Fuel injection valve ground | Ground point |
| | | |
| 7 | E | Secondary air injection pump high speed signal | Air injection pump relay |
| | | |
| 8 | A | Malfunction indicator lamp (USA only) | Instrument cluster |
| | | |
| 9 | | Not used | |
| | | |
| 10 | E | Drive-away protection | General module |
| | | |
| 11 | E | A/C compressor signal | Heating and A/C control module |
| | | |
| 12 | E | Terminal 50 signal | up to 1994_12 Starter relay as of 1995_01 Transmit/receive module (EWS) |
| | | |
| 13 | | Not used | |
| | | |
| 14 | | Not used | |
| | | |
| 15 | | Not used | |
| | | |
| 16 | | Not used | |
| | | |
| 17 | E | Hot-film mass air flow sensor signal | Hot-film mass air flow sensor |
| | | |
| 18 | | Not used | |
| | | |
| 19 | A | Heated oxygen sensor signal | Heated oxygen sensor I in front of catalytic converter |
| | | |
| 20 | M | Crankshaft position sensor ground | Crankshaft position/RPM sensor I |
| | | |
| 21 | A | Camshaft position sensor signal | Hall effect camshaft position sensor |
| | | |
| 22 | | Not used | |
| | | |
| 23 | | Not used | |
| | | |
| 24 | | Not used | |
| | | |
| 25 | | Not used | |
| | | |
| 26 | E | Terminal 30 | up to 1995_08 Fuse F109 as of 1995_09 Fuse carrier, engine electronics |
| | | |
| 27 | E | Engine control module relay I | Engine control module relay I |
| | | |
| 28 | M | Ground for electronics and sensor shield | Ground splice |
| | | |
| 29 | | Not used | |
| | | |
| 30 | E | Oxygen sensor heater signal | Heated oxygen sensor I in front of catalytic converter |
| | | |
| 31 | A | Cyl. 5 fuel injection valve | Cyl. 5 fuel injection valve |
| | | |
| 32 | A | Cyl. 5 fuel injection valve | Cyl. 5 fuel injection valve |
| | | |
| 33 | A | Cyl. 4 fuel injection valve | Cyl. 4 fuel injection valve |
| | | |
| 34 | M | Ground | Ground point |
| | | |
| 35 | | Not used | |
| | | |
| 36 | A | A/C compressor relay signal | Heating and A/C control module |
| | | |
| 37 | | Not used | |
| | | |
| 38 | | Not used | |
| | | |
| 39 | E | Inertia fuel shutoff switch signal | Pedal position sensor |
| | | |
| 40 | E | Knock sensor signal | Knock sensor 2 |
| | | |
| 41 | | Not used | |
| | | |
| 42 | | Not used | |
| | | |
| 43 | | Not used | |
| | | |
| 44 | M | Ground | Ground splice |
| | | |
| 45 | E | Hot-film mass air flow sensor ground | Hot-film mass air flow sensor |
| | | |
| 46 | M | Heated oxygen sensor ground | Ground splice |
| | | |
| 47 | | Not used | |
| | | |
| 48 | | Not used | |
| | | |
| 49 | A | Ignition signal Ignition coil 1 | Ignition coil 1 |
| | | |
| 50 | | Not used | |
| | | |
| 51 | | Not used | |
| | | |
| 52 | | Not used | |
| | | |
| 53 | | Not used | |
| | | |
| 54 | E | Terminal 87 | Engine control module relay I |
| | | |
| 55 | M | Ground | Ground point |
| | | |
| 56 | E | Terminal 15 | Fuse F24 |
| | | |
| 57 | | Not used | |
| | | |
| 58 | | Not used | |
| | | |
| 59 | | Not used | |
| | | |
| 60 | E | Programming voltage input | Data link connector Pin 18 |
| | | |
| 61 | A | Evaporative emission valve | Evaporative emission valve I |
| | | |
| 62 | E | Start signal | up to 1994_12 Starter relay as of 1995_01 Electronic drive-away protection control unit (EWS) |
| | | |
| 63 | E | Electrical fuel pump signal | Fuel pump relay |
| | | |
| 64 | | Not used | |
| | | |
| 65 | | Not used | |
| | | |
| 66 | | Not used | |
| | | |
| 67 | | Not used | |
| | | |
| 68 | | Not used | |
| | | |
| 69 | E | A/C system standby signal | Heating and A/C control module |
| | | |
| 70 | E | Knock sensor signal | Knock sensor 1 |
| | | |
| 71 | M | Shield | Ground splice |
| | | |
| 72 | | Not used | |
| | | |
| 73 | | Not used | |
| | | |
| 74 | A | Water temperature regulator splice | Dual temperature sensor |
| | | |
| 75 | | Not used | |
| | | |
| 76 | | Not used | |
| | | |
| 77 | A | Heated oxygen sensor signal | Heated oxygen sensor I behind catalytic converter |
| | | |
| 78 | A | Crankshaft position sensor signal | Crankshaft position/RPM sensor I |
| | | |
| 79 | E | Rear engine speed signal | ABS/DSC control module |
| | | |
| 80 | A | Engine speed signal | Integrated instrument cluster control module (IKE) |
| | | |
| 81 | | Not used | |
| | | |
| 82 | | Not used | |
| | | |
| 83 | A | Injection signal | Integrated instrument cluster control module (IKE) |
| | | |
| 84 | A | CAN-bus shield | CAN star contact coupler |
| | | |
| 85 | E/A | CAN-bus low | CAN star contact coupler |
| | | |
| 86 | E/A | CAN-bus high | CAN star contact coupler |
| | | |
| 87 | E | Data link RXD | Data link connector Pin 15 |
| | | |
| 88 | E/A | Data link TXD | Data link connector Pin 17 |
| | | |