GTI V6-2.8L (BDF) (2002)
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Unscrew protective cover (arrows) and disconnect 4-pin harness connector (black) -1- to Oxygen Sensor (O2S) Behind Three Way Catalytic
Converter (TWC) -G130-.
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Check wires between test box and 4-pin connector (to control module) for open circuit according to wiring diagram.
Terminal 3 + socket 68
Terminal 4 + socket 69
Wire resistance: max: 1.5 Ohm
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Also check wires for short circuit to B+ and Ground (GND).
Specified value: infinite Ohm
If no malfunctions are found in wires:
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Replace Motronic Engine Control Module (ECM) -J220-.
