Golf GLS L4-2.0L (AVH) (2002)
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Press buttons 4-, -0- and -1- to select "Display group number 41". Press -Q- button to confirm input.
Indicated on display: (1 to 4 = display fields)
Read measuring value block 41
->
1
2
3
4
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Let engine run at idle for 2 minutes.
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Check the status of the oxygen sensor heater in display field 4:
Display: Htng.beh.cat.ON,
Htng.beh.cat.OFF (alternating)
If indications do not resemble description:
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Press -> button.
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Press buttons -0- and -6- to select "End data transfer" function 06. Press -Q- button to confirm input.
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Switch ignition off.
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Unscrew protective cover (arrows) and disconnect 4-pin harness connector (black) -1- to Oxygen Sensor (02S) behind Three Way Catalytic
Converter (TWC) -G130-.
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Set multimeter for resistance measurement and connect it to terminals 1 + 2 at connector for oxygen sensor. Check oxygen sensor heater for
continuity.
If a short circuit is found in the oxygen sensor heater:
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Replace Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) - G130-.
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Check DTC memory, repair any malfunctions and then erase DTC memory, Checking and erasing DTC memory.
If oxygen sensor heater has continuity: