Scheme 1-7. Engine control unit, fuel pump relay, preliminary lambda probes 1 and 2, brake booster relay, brake vacuum pump
| G39 | lambda probe 1 |
| G39 | lambda probe 2 |
| G294 | brake booster pressure sensor |
| J17 | fuel pump relay |
| 3220 | engine control unit |
| J569 | brake booster relay |
| 3228 | fuse 28 |
| S234 | fuse 34 |
| T4u | 4-pin black plug lambda probe 1 |
| T4v | 4-pin black plug lambda probe 2 |
| T10p | 10-pin black plug for under cowl fuse/relay box |
| T17k | 17-pin red connector for under cowl fuse/relay box |
| V192 | brake drive vacuum pump |
| Z19 | lambda probe heater 1 |
| Z28 | lambda probe heater 2 |
| 85 | connection 1 to ground (-) in the engine compartment wiring harness |
| 200 | connection to ground (-) (shielding) in the engine compartment wiring harness |
| D22 | connecting the wires through fuse 34 in the wiring harness on the right side of the engine compartment |