Engine Coolant Temperature (ECT) Sensor G62 - 4.2L 8-cylinder engine (Audi S4), multi-pin connector assignments

WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2009 Audi S4, 2009 Audi A4, 2008 Audi S4, 2008 Audi RS 4, and 2008 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

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

Preparations

Fig 1: Removing/Installing Rear Engine Cover

GW00017835

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove rear engine cover - arrows -.

Fig 2: Identifying Electrical Connection At Sensor

GW00021598

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Disconnect electrical connection - 1 - at sensor.

NOTE:

Illustration shows engine removed.

Fig 3: Coolant Temperature Sensor Terminals

GW00015756

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Pin assignment for 4-pin connector at Engine Coolant Temperature (ECT) Sensor G62 - through 05.05

3 - Ground (GND) ( - )

4 - Wiring from sensor to instrument cluster (temperature gauge)

Fig 4: Identifying 2-Pin Electrical Harness Connector & Terminals

GW00001018

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Pin assignment for 2-pin connector at Engine Coolant Temperature (ECT) Sensor G62 - from 06.05

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