Passat Syncro Wagon V6-2771cc 2.8L DOHC (AHA) (1998)
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4-pin connector (black) for Heated Oxygen Sensor (HO2S) 2 -G108- for bank 2 (arrow).
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Connect multimeter US1119 (Fluke 83 or equivalent) between HO2S connector terminals 1 and 2, using VW1594 connector test kit.
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Measure resistance.
Specified value: 0.0-19.9 Ohms
If resistance is NOT OK:
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Replace respective Heated Oxygen Sensor (HO2S).
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Cylinder bank 1 -G39-, item 27, See: Service and Repair
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Cylinder bank 2 -G108-, item 18, See: Service and Repair
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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: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If resistance is OK:
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Switch multimeter to 20 VDC measuring range.