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Home >> Volkswagen >> 2012 >> Passat S, 2.5L Eng VIN H, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> 2.5L - Generic Scan Tool - Engine Code(S): CBTA & CBUA >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> Oxygen Sensor After Catalytic Converter, Checking >> Checking Wiring
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Checking Wiring

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

-- Using a multimeter, check the HO2S Oxygen Sensor Bank 1 Sensor 2 -G130- electrical harness connector T4v terminals to the Engine Control Module (ECM) -J220- electrical harness connector T94 terminals for an open circuit.

2009 - 2010 Models

Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- electrical harness connector terminals: Engine Control Module (ECM) -J623- electrical connector T94 terminals:
3 71
4 62

2011 >

Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- electrical harness connector terminals: Engine Control Module (ECM) -J623- electrical connector T94 terminals:
3 72
4 84

Specified value: 1.5 Ω Max.

If the specified value was Not obtained:

-- Check the wiring for an open, high resistance, short circuit to each other, Battery (+) or Ground.

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

-- If necessary, repair the faulty wiring connection.

If no malfunction is detected in the wiring and the voltage supply was Not OK:

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

-- Assembly is performed in the reverse of the removal.