The 14 pin Nissan Consult diagnostics port was the predecessor to the now well known OBD port.

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Taken from https://pinoutguide.com

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| Pin Number | Pin Name | Description (may be empty) |
| 1 | RX (TX?) |  Data in |
| 2 | TX (RX?) |  Data out |
| 4 | ABS |  ABS diagnostic |
| 6 | CHK |  Check to ECCS |
| 7 | +12v |  Power |
| 8 | GND |  Ground |
| 9 | CLK |  Synchronization signal |