Touareg V8-4.2L (AXQ) (2006)
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End diagnosis and switch ignition off.
If specified values are not obtained:
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Check oxygen sensor wires according to wiring diagram.
Checking oxygen sensor wires
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Connect test box to control module wiring harness , connect test box for wiring test.
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Disconnect 4-pin harness connector to the respective oxygen sensor:
‹› Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130), bank 1, 4-pin harness connector 1-,
‹› Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) (G131), bank 2, 4-pin harness connector 3-,
‹› Bank 1 = Cylinder bank 1, in direction of travel, right.
‹› Bank 2 = Cylinder bank 2, in direction of travel, left.
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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.
Wire resistance: max. 1.5 ohms