volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 1556 > < Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection
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Using the scan tool, check the coolant temperature:

If the specified value is not obtained:

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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.

Use the chart below for the specified values:

‹› Area A: Resistance values 0 to 50 °C.

‹› Area B: Resistance values 50 to 100 °C.

Specified values:

Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 1556 > < Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection