| Number | X-pin, color | Description |
|---|---|---|
| X6303 | 9 -pin, Black | Connector Oxygen sensor relay |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | Not used | ||
| 2 | A | Terminal 87 | Terminal 87 splice |
| 3 | Not used | ||
| 4 | M | Terminal 85 ground control | Engine control module (DME) |
| 5 | Not used | ||
| 6 | E | Terminal 30 hot at all times | Terminal 87 splice |
| 7 | Not used | ||
| 8 | E | Terminal 30 hot at all times | Terminal 87 splice |
| 9 | Not used | ||