Testing If Display Is Approx. - 40.0°C

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

Fig 1: Identifying Engine Coolant Temperature (ECT) Sensor G62 Electrical Harness Connector

Courtesy of AUDI OF AMERICA, LLC

-- 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.

If the value jumps to approx. 140.0° C

-- End diagnosis and switch the ignition off.

-- Replace the Engine Coolant Temperature (ECT) Sensor - G62-. Refer to appropriate service information.

If indication remains at approx. -40.0° C: