If you click on the link ard provided and then go to Engine Cooling link on the page and then scroll to the right, you will see there are two temperature sensors linked to DME. B604 and B6236a, first being the temp at radiator outlet and the second being engine coolant temperature sensor.

Schematics shows wires coming to pins 1 and 2 on both connectors X87 and X6236, so both your connectors should have two wires. X87 should have Black/Green and Black/Gray wires, and X6236 should have Brown and White/Green wires.

On the diagram you can also see where those wires go to the main connector in DME so that you can check them for continuity. Both of mine have these exact connectors and these exact wire colors.