Passat Syncro Wagon V6-2771cc 2.8L DOHC (AHA) (1998)
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Check wiring for open circuit between ECM/test box and 4-pin O2S harness connector (to ECM).
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Connector terminal 2 to ECM/test box socket 28
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Specified value: max. 1.5 Ohms
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Check wiring at O2S harness connector terminals 3 and 4 for short circuit to terminals 1 and 2 using wiring diagram.
Specified value: Infinity Ohms
If the specification is attained:
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Check wiring between terminal 1 and fuel pump relay -J17- using appropriate wiring diagram.
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Check readiness code. If Diagnostic Trouble Code (DTC) memory has been erased, or ECM was disconnected, generate new readiness code.
See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If wiring is OK:
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Replace Motronic ECM -J220-. See: Engine Control Module/Service and Repair