volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 2169 > < Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection
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Switch the ignition on.

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Using the scan tool, check the coolant temperature:

If indication remains at approx. -40.0° C: 

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Continue test according to the following table:

If the specified value was obtained:

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Start the engine and let it run at idle.

The temperature value must increase uniformly in increments of 1.0° C.

If the engine shows problems in certain temperature ranges and if the temperature does not climb uniformly, the temperature signal is intermittent. 

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

Checking internal resistance

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

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Using a multimeter, check the Engine Coolant Temperature (ECT) Sensor (G62) terminals 1 to 2 for resistance.

Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 2169 > < Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection