Passat Wagon L4-1.9L DSL Turbo (AHU) (1997)
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
Engine Code AAZ
Special Tools, Testers And Auxiliary Items:
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Fluke 83 multimeter (or equivalent)
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VW1594 connector test kit
Test Sequence:
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Remove harness connector from sensor for engine temperature -G27-.
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Measure resistance between engine temperature sensor terminals -1- and -3- using multimeter.
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Compare reading with specifications (see illustration).
If specification not obtained:
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Release coolant system pressure and replace engine temperature sensor.