Jetta GLX Wagon V6-2.8L (AFP) (2001)
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Connect multimeter for voltage measurement to terminals 3 + 4 of connector to Engine Control Module (ECM) and measure primary voltage.
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.
If specified value is obtained:
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Replace Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- Bank 1:
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Vehicles with engine code AFP, item 9,
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Vehicles with engine code BDF, item 13.
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
See: Testing and Inspection/Scan Tool Testing and Procedures/With Generic Scan Tool/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
Checking oxygen sensor wires
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Connect test box to control module wiring harness, connect test box 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
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Unscrew protective cover (arrows) and disconnect 4-pin harness connector (black) -1- to Oxygen Sensor (O2S) Behind Three Way Catalytic
Converter (TWC) -G130-.
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Check wires between test box and 4-pin connector (to control module) for open circuit according to wiring diagram.