audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 801 > < Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 799
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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). Refer to appropriate service information.

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). Refer to appropriate service information.

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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.

Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 801 > < Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 799