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Home >> Volkswagen >> 2011 >> Eos Lux, 2.0 W >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L - Generic Scan Tool - Engine Code(S): CBFA >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> Engine Coolant Temperature Sensor 1 Or 2 Checking >> Testing if display approx. 140.0°C
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Testing if display approx. 140.0°C

-- Disconnect the Engine Coolant Temperature (ECT) Sensor - G62 or 83- electrical harness connector.

-- Turn the ignition switch On.

If indication jumps to approx. - 40.0 °C:

-- Switch ignition Off.

-- Replace these Engine Coolant Temperature (ECT) Sensor - G62 or 83-

If the value remains at approx. 140.0 °C

Checking wiring 

-- Remove the Motronic Engine Control Module (ECM) -J623- and disconnect the ECM connectors.

-- Disconnect the ECT harness connector at the sensor.

-- Using a multimeter, check the signal circuit of the Engine Coolant Temperature (ECT) Sensor - G62 or 83- electrical harness connector terminal 1 to engine ground.

Specified value: OL or no continuity.

If the specified value was Not obtained:

-- Check the wiring for a short circuit to Ground.

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

-- If necessary, repair the faulty wiring connection.

If the specified value was obtained:

-- Replace the Motronic Engine Control Module (ECM) -J623-.

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