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volkswagen Workshop Repair Guides


Eos (1F7) V6-3.2L (BUB) (2008)

Engine, Cooling and Exhaust > Cooling System > Engine - Coolant Temperature Sensor/Switch > Coolant Temperature Sensor/Switch (For Computer) > Component Information > Testing and Inspection > Engine Coolant Temperature (ECT) Sensor (on Radiator) G83, Checking > Page 2350

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Area A: Resistance values 0 to 50 degrees C.

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Area B: Resistance values 50 to 100 degrees C.

Specified values:

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Range A, 30 degrees C equals a resistance of 1.5 to 2.0 kOhms

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Range B, 80 degrees C equals a resistance of 275 to 375Ohms

If any of the specified values was not obtained:

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Replace the Engine Coolant Temperature (ECT) Sensor (on Radiator) G83.

If any of the specified values was obtained:

Checking wiring

If the manufacturers test box is being used. Perform the following step.

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Install the Test Box 105 Pin VAG1598/31.

If the manufacturers test box is not being used. Perform the following step.

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Remove the Engine Control Module (ECM) J623.

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Using a Multimeter, check the Engine Coolant Temperature (ECT) Sensor (on Radiator) G83 electrical harness connector terminals to the Engine
Control Module (ECM) J623 electrical harness connector T121 terminals for an open circuit according to the wiring diagram.

Engine Coolant Temperature

Engine Control Module (ECM)

(ECT) Sensor (on Radiator)

J623 electrical connector 121

G83 electrical harness

terminals or test box socket

connector terminals
1

17

2

50

Specified value: 1.5 Ohms Max.

If the specification was not obtained:

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Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).

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Check the electrical harness connector for damage, corrosion, lose or broken terminals.

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If necessary, repair the faulty wiring connection.

If no malfunction is detected in the wiring:

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Erase the DTC memory.  

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Perform a road test to verify repair.

Engine, Cooling and Exhaust > Cooling System > Engine - Coolant Temperature Sensor/Switch > Coolant Temperature Sensor/Switch (For Computer) > Component Information > Testing and Inspection > Engine Coolant Temperature (ECT) Sensor (on Radiator) G83, Checking > Page 2350

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