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Testing if display is approx. - 40.0°C:

-- Disconnect the Engine Coolant Temperature (ECT) Sensor -G62- electrical harness connector -1-.

Fig 1: Identifying Engine Coolant Temperature (ECT) Sensor G62 Electrical Harness Connector
GWWN10-0240Courtesy of VOLKSWAGEN UNITED STATES, INC.

-- Using a jumper wire, connect the Engine Coolant Temperature (ECT) Sensor -G62- electrical harness connector terminals 1 to 2.

-- Check the value indicated on the scan tool display.

Fig 2: 2-Pin Electrical Connector & Terminals
GWWA28-0040Courtesy of VOLKSWAGEN UNITED STATES, INC.

If the value jumps to approx. 140.0°C

-- Switch the ignition Off.

-- Replace the Engine Coolant Temperature (ECT) Sensor - G62-.

If indication remains at approx. -40.0°C:

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