Passat Syncro Wagon V6-2.8L (ATQ) (2000)
If no DTC is found on sensor:
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Connect VAG 1598/31 test box to control module wiring harness. Engine Control Module (ECM) is not connected.
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Check for breaks in wires between test box and 3-way connector (see wiring diagram).
Terminal 1 + socket 108
Terminal 2 + socket 90
Terminal 3 + socket 82
Wire resistance: max. 1.5 Ohms
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Also check wires for shorts among one another.
If no malfunctions are found in wires:
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Remove sensor and check sensor wheel for secure fit, damage, and run-out.
NOTE: There is a larger-sized gap on the sensor wheel. This gap is a reference mark, not damage.
If nothing seems to be wrong with the sensor wheel:
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Replace Engine Control Module (ECM).