LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volkswagen >> 2011 >> CC R-Line, 2.0 P, Standard >> 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 Is Approx. - 40.0° C
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Testing If Display Is Approx. - 40.0° C

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

-- Using a jumper wire, connect the Engine Coolant Temperature (ECT) Sensor - G62 or 83- electrical harness connector terminals 1 to 2.

-- Turn the ignition switch ON

-- Check the value indicated on the scan tool display.

-- Turn the ignition switch OFF

If the value jumps to approx. 140.0° C

-- Replace the Engine Coolant Temperature (ECT) Sensor - G62 or 83- Refer to the Repair Information.

If indication remains at approx. - 40.0° C:

Checking wiring 

If the manufacturers test box is being used, perform the following step.

-- Install the test box.

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

-- Remove the Motronic Engine Control Module (ECM) -J623-. Refer to the Repair Information.

-- Using a multimeter, check the Engine Coolant Temperature (ECT) Sensor - G62 or 83- electrical harness connector terminals to the Motronic Engine Control Module (ECM) -J623- electrical harness connector T60 terminals for an open circuit or a short to voltage, refer to the chart below.

Engine Coolant Temperature (ECT) Sensor - G62- electrical harness connector terminals Motronic Engine Control Module (ECM) -J623- electrical connector T60 terminals or test box socket
1 57
2 14

OR 

Engine Coolant Temperature (ECT) Sensor - G83- electrical harness connector terminals Motronic Engine Control Module (ECM) -J623- electrical connector T94 terminals or test box socket
1 36
2 12

Specified values: 1.5 Ω Max. and 0 volts with key on and ECM disconnected.

If the specified value was Not obtained:

-- Check the wiring for an open or short circuit to Battery (+).

-- 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:

-- Using a multimeter, check terminal 2 of the ECT sensor to engine ground.

Specified value: 1.5 Ω Max

If the specified value was Not obtained:

-- Check the wiring for an open circuit or high resistance.

-- 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-. Refer to the Repair Information.

scientia non olet · About LEMON Manuals