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

CAUTION:
  • Switch off all electrical consumers.
  • Switch ignition off and remove ignition key.

Preparations 

Fig 1: Removing/Installing Rear Engine Cover
GW00017835Courtesy of VOLKSWAGEN UNITED STATES, INC.
Fig 2: Identifying Electrical Connection At Sensor
GW00021598Courtesy of VOLKSWAGEN UNITED STATES, INC.
NOTE:
  • Illustration shows engine removed.
Fig 3: Coolant Temperature Sensor Terminals
GW00015756Courtesy 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
GW00001018Courtesy of VOLKSWAGEN UNITED STATES, INC.

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

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