| G85 | Steering angle sender, on steering column |
| J... | Engine control units |
| J285 | Control unit with display in dash panel insert |
| J533 | Data bus diagnostic interface, in dash panel insert |
| T10 | 10-pin connector, orange, coupling station, electronics box, on left in plenum chamber |
| T16 | 16-pin connector, near handbrake lever, self-diagnosis connection |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 42 | Earth point, next to steering column |
| 81 | Earth connection -1-, in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| J104 | ABS with EDL control unit, in front right footwell |
| J217 | Automatic gearbox control unit, in footwell, front right |
| J220 | Motronic control unit, in control unit protective housing, left in engine compartment |
| J234 | Airbag control unit, behind lower console |
| J248 | Diesel direct injection system control unit |
| J361 | Simos control unit, in control unit protective housing, on left in engine compartment |
| T10d | 10-pin connector, white, coupling station, electronics box, on left in plenum chamber |
| T31 | 31-pin connector |
| T68 | 68-pin connector |
| T75 | 75-pin connector |
| T80 | 80-pin connector |
| T88 | 88-pin connector |
| T121 | 121-pin connector |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |