| Multi-pin connector, 54-pin (T54a) |
| 4 - | Switch-on signal to navigation system with CD drive control unit -J401- |
| 6 - | Data from navigation system with CD drive control unit -J401- |
| 7 - | Data to navigation system with CD drive control unit -J401- |
| 8 - | NF (+) (low frequency) to digital sound package control unit -J525- |
| 9 - | NF (–) (low frequency) to digital sound package control unit -J525- |
| 10 - | Terminal 31 (screen earth) to navigation system with CD drive control unit -J401- |
| 11 - | Microphone input (+) from microphone unit in front roof module -R164- (telephone microphone -R38-) from model year 2008 onwards |
| 12 - | Microphone input (–) from microphone unit in front roof module -R164- (telephone microphone -R38-) from model year 2008 onwards |
| 16 - | NF mute (low frequency) to control unit for front display and information control panel -J523- |
| 37 - | Connector cable (CU) |
| 38 - | Connector cable (TxAF) |
| 39 - | Connector cable (AG) |
| 42 - | Connector cable (TTxD) |
| 43 - | Connector cable (TRxD) |
| 45 - | Connector cable (CU) |
| 46 - | Connector cable (RxAF) |
| 48 - | Connector cable (PCon1) |
| 49 - | Connector cable (PCon2) |
| 50 - | Connector cable (AdPDt) |
| 51 - | Connector cable (AdPCt) |
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Note