Volkswagen Workshop Service and Repair Manuals

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For bank 1, sensor 1

29

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Harness connector
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4-pin connector,green

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For Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC) - G130- and Oxygen Sensor (O2S) heater -Z29-

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Location,  See: Fuel Delivery and Air Induction/Locations

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For bank 1, sensor 2

30

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Fuel rail with fuel injectors
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Disassembling and assembling,  See: Fuel Delivery and Air Induction/Fuel Rail/Service and Repair

31

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Fuel supply line
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Black

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From fuel filter:

32

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Fuel return line
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Blue

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Secure with spring- type clamps

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Check for secure seating

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To the fuel delivery unit in fuel tank

33

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Engine - Coolant Temperature (ECT) sensor -G62-*
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Blue

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For ECM

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With coolant temperature gauge sensor -G2-

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Checking,  See: Coolant Temperature Sensor/Switch (For Computer)/Testing and Inspection

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Before removing, release pressure from cooling system

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Resistance graph,  See: Coolant Temperature Sensor/Switch (For Computer)/Testing and Inspection

34

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Harness connector
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4-pin connector, blue

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For Engine Coolant Temperature (ECT) sensor -G62-

35

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Retaining clip
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Check for secure seating

36

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Harness connector
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2-pin connector, green

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For Secondary Air Injection (AIR) solenoid valve -N112- 

37

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Harness connector
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2-pin connector, blue

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For Intake Manifold Tuning (IMT) valve -N156-