Passat V6-2.8L (ATQ) (2004)
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Measure resistance for sensor heater at connector to oxygen sensor terminal 1 +2.
Specified value: 0.0 to 19.9 ohms
Vehicles with engine code ATQ
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Measure resistance for sensor heater at connector to oxygen sensor terminal 1+2. Specified value: max. 200 ohms
Continuation for all vehicles
If specified value is not obtained:
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Replace the respective oxygen sensor:
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Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-
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Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131-.
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Erase DTC memory of Engine Control Module (ECM). Diagnostic mode 4: Reset/erase diagnostic data. See: Powertrain Management/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: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and
Readiness Codes
If specified value is obtained:
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Check Ground (GND) activation of the respective oxygen sensor heater.
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Connect test box to control module wiring harness. connect test box for wiring test. See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/Test Box, Connecting For Wiring Test
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Check wires between test box and 4-pin connector to Engine Control Module (ECM) for open circuit according to wiring diagram.
Wire resistance: max. 1.5 ohms