Jetta Sedan V6-2.8L (BDF) (2003)
Oxygen Sensor: Testing and Inspection
Oxygen Sensor Heater For O2 Sensor Before TWC, Checking
With Manufacturer's Scan Tool
Refer to Oxygen Sensor And 02 Sensor Control Before TWC, Checking, With Manufacturer's Scan Tool.
See: Testing and Inspection/Component Tests and General Diagnostics/Oxygen Sensor and O2 Sensor Control Before TWC, Checking/With
Manufacturer's Scan Tool
With Generic Scan Tool
Oxygen Sensor Heater For Oxygen Sensor Before Three Way Catalytic Converter (TWC), Checking
NOTE:
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Vehicle must be raised before connector for oxygen sensor is accessible.
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When servicing terminals in harness connector of Heated Oxygen Sensor (HO2S), use only gold-plated terminals.
Recommended special tools and equipment
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VAG1526 multimeter or VAG1715 multimeter
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VAG1594 connector test kit
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Wiring diagram
Test requirements
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The respective fuses of Heated Oxygen Sensor (HO2S) -G39- must be OK.
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Ignition switched off.
Test sequence
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Unscrew protective cover (arrows) and disconnect 6-pin harness connector (black) -1- to Heated Oxygen Sensor (HO2S) -G39- before catalytic
converter.