Engine Coolant Temperature (ECT) Sensor -G2-, multi-pin connector assignments

CAUTION:

Before beginning repairs on the electrical system

Switch off all electrical consumers.
Switch off ignition and remove ignition key.

Fig 1: Locating Engine Coolant Temperature Sensor -G2-

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Engine Coolant Temperature (ECT) Sensor -G2- -arrow- is located in the coolant flange/thermostat housing to the left of the cylinder head. Sensor is integrated with Engine Coolant Temperature (ECT) Sensor -G62-.

Engine Coolant Temperature (ECT) Sensor -G2-/-G62- multi-pin connector assignments

Fig 2: Coolant Temperature Sensor Terminals

Courtesy of VOLKSWAGEN UNITED STATES, INC.

1 - ECT signal to temperature gauge

2 - Ground (GND) ( - )

3 - ECT signal to Engine Control Module (ECM) -J220-

4 - Sensor Ground (GND) ( - )