Golf L4-1.8L Turbo (AWW) (2003)
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Check wiring for open circuit between test box and 6-pin connector (to control module) according to wiring diagram.
Contact 1+socket 70
Contact 2+socket 71
Contact 5+socket 51
Contact 6+socket 52
Wire resistance: Max. 1.5 Ohm
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Additionally check wires all for short to one another.
Specification: Infinity Ohm
If no wiring fault is detected:
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Replace the Heated Oxygen Sensor (HO2S)(G39).
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Check DTC Memory, if necessary, repair any malfunctions and then Erase DTC Memory,Checking and Erasing DTC Memory. Refer to
"Displaying and Reading Trouble Codes/With Manufacture Scan Tool/Check DTC Memory (Function 02)" See: Testing and Inspection
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Read readiness code. If DTC memory has been erased or engine control module was disconnected from permanent positive, readiness code must
be generated again: Refer to "Monitors, Trips and/or Drive Cycle/ Reading Readiness Code" See: Testing and Inspection
Engine code AWW, Refer to "Monitors, Trips and/or Drive Cycle/Generating Readiness Code" See: Testing and Inspection
Engine code AWP, Refer to "Monitors, Trips and/or Drive Cycle/Generating Readiness Code" See: Testing and Inspection
Oxygen Sensor Aging Check
Oxygen Sensor Aging Check
Special tools and equipment
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V.A.G 1551 Scan Tool or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3
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V.A.G 1788/10 Engine speed adjuster
Test conditions