| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | E/A | Diagnostic link TXD | Diagnostic connector |
| | | |
| 2 | E | up to 1995_08 Not used as of 1995_09 Coding signal | Electronic immobilizer control unit (EWS) |
| | | |
| 3 | A | Speedometer (A) output signal | DME control unit 730i, 740i |
| | | |
| 4 | | Not used | |
| | | |
| 5 | E/A | up to 1995_08 Diagnostic link RXD as of 1995_09 Not used | Diagnostic connector |
| | | |
| 6 | | Not used | |
| | | |
| 7 | A | K-bus signal line | K-bus connector |
| | | |
| 8 | E/A | I-bus signal line | I-bus connector |
| | | |
| 9 | M | Control unit ground | Ground connector |
| | | |
| 10 | M | Control unit ground | Ground connector |
| | | |
| 11 | A | Activation, tone 3 acoustic generator | Gong |
| | | |
| 12 | E | Terminal R | Fuse F41 |
| | | |
| 13 | A | Instrument cluster interface | AGS transmission control unit |
| | | |
| 14 | E | Start position, terminal 30h | Starter |
| | | |
| 15 | E | Terminal 30 | Fuse F26 |
| | | |
| 16 | E | Terminal 15 | Fuse F18 |
| | | |
| 17 | A | Activation, tone 2 acoustic generator | Gong |
| | | |
| 18 | A | Activation, tone 1 acoustic generator | Gong |
| | | |
| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | E | Rear left speed signal | ABS/ASC control unit |
| | | |
| 2 | | Not used | |
| | | |
| 3 | E | TD signal (engine speed) | DME control unit |
| | | |
| 4 | E | Brake pad wear indicator | Brake pad sensor |
| | | |
| 5 | E | BC remote control | Turn indicator/low beam selector |
| | | |
| 6 | | Not used | |
| | | |
| 7 | E | Tank content I | Electrical fuel pump (EKP I) |
| | | |
| 8 | | Not used | |
| | | |
| 9 | | Not used | |
| | | |
| 10 | | Not used | |
| | | |
| 11 | | Not used | |
| | | |
| 12 | A | Sensor ground I | Electrical fuel pump (EKP I) |
| | | |
| 13 | E | TI signal (injection signal) | DME control unit 730i, 740i |
| | | |
| 14 | E | Outside temperature | Temperature sensor |
| | | |
| 15 | A/E | Diagnostic link | Diagnostic connector |
| | | |
| 16 | A | Sensor ground II | Fuel supply sensor II |
| | | |
| 17 | | Not used | |
| | | |
| 18 | A | Sensor ground | Remote thermometer sensor |
| | | |
| 19 | E | Coolant temperature | Remote thermometer sensor |
| | | |
| 20 | A | Sensor ground | Brake pad sensor |
| | | |
| 21 | | Not used | |
| | | |
| 22 | A | Sensor ground | Temperature sensor |
| | | |
| 23 | E | Tank content II | Fuel supply sensor II |
| | | |
| 24 | | Not used | |
| | | |
| 25 | E | Reversing light signal (without AGS) | Reversing light switch 730i, 740i |
| | | |
| 26 | E | Injection signal | Engine control module II (DME) 750i |
| | | |