volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Oxygen Sensor and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 1749 > < Oxygen Sensor and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 1747
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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 51
Terminal 4 + socket 52

Wire resistance: max. 1.5 Ohms

Vehicles with engine code AVH, AZG, BDC, BEV, BGD

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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 Ohms

Continued for all vehicles

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Check wires for short circuit to B+ and to Ground (GND).

Specified value: Infinite Ohms

If no malfunctions are found in wires:

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Replace Motronic Engine Control Module (ECM) -J220-.

Oxygen Sensor and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 1749 > < Oxygen Sensor and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 1747