Passat Syncro Wagon V6-2771cc 2.8L DOHC (AHA) (1998)
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Check shielding wire for short circuit to sensor wires.
Connector terminal 4 to ECM/test box socket 14
Connector terminal 3 to ECM/test box socket 14
Specified value: Infinity Ohms
If wiring is OK:
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Replace Motronic ECM -J220-. See: Engine Control Module/Service and Repair