Jetta L4-1.8L Turbo (AWP) (2004)
Continuation for all vehicles
If an open circuit is found in the oxygen sensor heater:
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Replace Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- Bank 1, item 10
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. See: Computers and Control
Systems/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: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If oxygen sensor heater has continuity:
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Check voltage supply and wiring
Checking voltage supply and wiring
Vehicles with engine code AWD
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Set multimeter for voltage measurement and connect it to terminals 1 + 2 at connector to control module.
Vehicles with engine code AWP, AWW
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Set multimeter for voltage measurement and connect it to terminals 1 + 2 at connector to control module.
Continuation for all vehicles
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Start engine, and let run at idle.
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Measure voltage supply
Specified value: oscillating between 0.0 and 12.0 V
If there is no voltage:
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Switch ignition off.
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Connect test box to control module wiring harness, connect test box for wiring test. Engine Control Module (ECM) is not connected.
Vehicles with engine code AWD