Jetta L4-1.8L Turbo (AWP) (2004)
If specified value is obtained:
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Check wire connection from terminal 1 to Fuel Pump (FP) Relay -J17- according to wiring diagram.
Vehicles with engine code AWP, AWW
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Check wire between test box and 6-pin connector for open circuit according to wiring diagram.
Terminal 4 + socket 5
Wire resistance: max: 1.5 Ohms
Continuation for all vehicles
If no malfunctions are found in wires:
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Replace Engine Control Module (ECM).
With Manufacturer's Scan Tool
Refer to Oxygen Sensor And 02 Sensor Behind (TWC), Checking, With Manufacturer's Scan Tool.
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Oxygen Sensor,
Checking/Oxygen Sensor Behind Catalyst, Checking
With Generic Scan Tool
Oxygen Sensor Heater For Oxygen Sensors Behind Three Way Catalytic Converter (TWC), Checking
NOTE: 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 Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- must be OK.
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Ignition switched off.
Vehicles with engine code AWD