| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | | Not used | |
| | | |
| 2 | M/E | Ground left-hand drive Signal, pump right-hand drive | Ground connector left-hand drive Connector, pump for lumbar support right-hand drive |
| | | |
| 3 | E | Signal, upper chamber left-hand drive Signal, lower chamber right-hand drive | Lumbar support switch, driver's seat |
| | | |
| 4 | E | Signal, lower chamber left-hand drive Signal, upper chamber right-hand drive | Lumbar support switch, driver's seat |
| | | |
| 5 | E/M | Signal, pump left-hand drive Ground right-hand drive | Connector, pump for lumbar support left-hand drive Ground connector right-hand drive |
| | | |
| 6 | | Not used | |
| | | |