Passat Sedan 4Motion W8-4.0L (BDP) (2002)
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Disconnect 6-pin harness connector to the respective oxygen sensor:
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Heated Oxygen Sensor (HO2S) -G39-, bank 1 6-pin harness connector (black) -1-,
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Heated Oxygen Sensor (HO2S) 2 -G108-, bank 2 6-pin harness connector (brown) -2-.
NOTE:
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Bank 1 = Cylinder bank 1, in direction of travel, right
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Bank 2 = Cylinder bank 2, in direction of travel, left
Checking voltage supply and wiring to control module
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Connect multimeter to terminals 3 + 4 of connector to Engine Control Module (ECM) for voltage measurement.
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Start engine, and let run at idle.
Specified value: at least 7.0 V
If specified value is obtained:
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Switch ignition off.
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
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Generate readiness code. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If specified value is not obtained:
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Connect multimeter to terminal 3 of connector to Engine Control Module (ECM) + Ground (GND) for voltage measurement.
Specified value: at least 11.0 V
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Switch ignition off.