| Number | X-pin, color | Description |
|---|---|---|
| X6220 | 4 -pin, Black | Connector Heated oxygen sensor |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E | Oxygen sensor heater signal | Engine control module (DME) |
| 2 | M | Heated oxygen sensor signal | Engine control module (DME) |
| 3 | M | Terminal 31 | Ground splice |
| 4 | E | Terminal 87 | Terminal 87 splice |