Engine Coolant Temperature (ECT) Gauge Sensor G2 - 3.0L 6-cylinder engine, multi-pin connector assignments

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CAUTION:

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

Preparations

Fig 1: Removing Rear Engine Cover

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove rear engine cover - arrows -.

Fig 2: Identifying Holding Plate, Intake Air Hose, Hose & Air Duct

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove bolts for solenoid valve retaining plate - 3 - - arrows -.
Remove air intake hose - 1 - at Mass Air Flow (MAF) Sensor G70.
Remove hose - 4 - at air duct - 2 -.

Fig 3: Removing Bolt And Disconnect Air Duct At Throttle Valve Control Module

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove bolt - arrow - and pull off air duct - 2 - at throttle valve control module J338.
Where applicable, remove hose - 1 - at air duct.

NOTE:

For illustration purposes the air duct is shown from the rear with the engine removed.

Fig 4: Disconnecting Electrical Harness Connector At Engine Coolant Temperature (ECT) Sensor -G2-/-G62-

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Disconnect electrical connection - 2 - at sensor.

NOTE:

Disregard - 1 -.

Fig 5: Coolant Temperature Sensor Terminals

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Pin assignment for 4-pin connector at Engine Coolant Temperature (ECT) Gauge Sensor G2

Wiring from sensor to instrument cluster (temperature gauge)
Ground (GND) ( - )