A4 Quattro Wagon L4-2.0L Turbo (CAEB) (2009)
If indication jumps to approx. -40.0° C:
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End diagnosis and switch ignition off.
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Replace the Engine Coolant Temperature (ECT) Sensor ( G62).
If indication remains at approx. 140.0° C:
Checking wiring
If the manufacturers test box is being used, perform the following step.
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Install the test box.
If the manufacturers test box is not being used, perform the following step.
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Remove the Motronic Engine Control Module (ECM) ( J623).
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Using a multimeter, check the Engine Coolant Temperature (ECT) Sensor ( G62) electrical harness connector terminals to the Motronic Engine
Control Module (ECM) (J623) electrical harness connector T60 terminals for an open circuit according to the wiring diagram.
Specified value: 1.5 ohms Max.