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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 2355

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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 G62 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 G62 electrical

J623 electrical connector 121

harness connector terminals

terminals or test box socket

1

93

2

108

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.

If the DTC does not return:
Repair complete, Generate readiness code.  See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive
Cycles and Readiness Codes

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End diagnosis.

If the DTC does return and no malfunction is detected in the wiring and the voltage supply was OK:

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Replace the Engine Control Module (ECM) J623.

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Assembly is performed in the reverse of the removal.

Final procedures

After repair work, the following work steps must be performed in the following sequence:

1. Check the DTC memory.  
2. If necessary, erase the DTC memory.  
3. If the DTC memory was erased, generate readiness code.  See: Powertrain Management/Computers and Control Systems/Testing and

Inspection/Monitors, Trips, Drive Cycles and Readiness Codes

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End of diagnosis.

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 2355

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