volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 435 > < Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 433
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If the value jumps to approx. 140.0° C

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End diagnosis and switch the ignition off.

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

If indication remains at approx. -40.0° C:

°Testing if display approx. 140.0 C

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

If indication jumps to approx. -40.0° C:

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End diagnosis and switch ignition off.

-

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) (J220). Refer to --> [ Engine Control Module ] See: Powertrain Management/Computers

Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 435 > < Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection|Page 433