Passat L4-1.8L Turbo (AWM) (2004)
Specified value: 0.40 to 0.50 Volts
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Switch ignition off.
If specified value is not obtained:
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Test oxygen sensor wires.
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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. Refer to "Monitors, Trips and/or Drive Cycle/Readiness Code, Generating". See: Testing and Inspection/Monitors,
Trips, Drive Cycles and Readiness Codes
If specified value is obtained:
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Replace Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-, item 6 .
Checking oxygen sensor wires
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Connect test box to control module wiring harness, connect test box for wiring test. Refer to "Scan Tool Connecting/Test Box, Connecting For
Wiring Test". See: Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test
Box, Connecting For Wiring Test
Vehicles with engine code AEB
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Disconnect 4-pin harness connector (black) to Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- (-1-).
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Check wires between test box and 4-pin connector (to control module) for open circuit according to wiring diagram.
Terminal 3 + socket 51
Terminal 4 + socket 52
Wire resistance: max: 1.5 Ohms
Vehicles with engine code ATW