volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Relays and Modules - Computers and Control Systems > < Oxygen Sensor and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 4291
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Check wires between test box and 4-pin connector to Engine Control Module (ECM) for open circuit according to wiring diagram.
Terminal 2 + socket 63

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

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Check wire between 4-pin connector terminal 1 and Fuel Pump (FP) relay -J17- for open circuit according to wiring diagram.

Wire resistance: max. 1.5 Ohms

If no malfunctions are found in wires:

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

Relays and Modules - Computers and Control Systems > < Oxygen Sensor and Oxygen Sensor Control Before Catalytic Converter, Checking|Page 4291