Engine Coolant Level Sensor (Diesel) Connector End View

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

ENGINE COOLANT LEVEL SENSOR (DIESEL) - 2 WAY

Courtesy of DAIMLERCHRYSLER CORP.
CAV	CIRCUIT	FUNCTION
1	G18 20OR/VT	LOW COOLANT FLUID LEVEL SENSE
2	Z939 20BK	GROUND