Beetle L4-2.0L (AEG) (2000)
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Switch OFF ignition.
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Take test drive to remove possible residue build-up on Oxygen sensor and repeat check.
Observe appropriate safety precautions during road test.
If specification in Display field 1 is not obtained even after a test drive.
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Check Oxygen sensor heater after Three Way Catalyst. See: Computers and Control Systems/Testing and Inspection/Component Tests and
General Diagnostics/Oxygen Sensor, Checking
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Raise engine speed above 3000 RPM.
If value in Display field 1 remains constant, evaluating Display group 36.
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Press -> button.
Indicated on display
Rapid data transfer
HELP
Select function XX
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Press 0 and 6 buttons to select "End output" function 06.
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Press Q button to enter input.
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Switch OFF ignition.
Display group 36, evaluating
Basic Voltage, checking
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Remove protective cover -arrows- and disconnect brown 4-pin harness connector to Oxygen sensor G39 (before Three Way Catalyst).
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Switch Fluke 83 multimeter to Voltage range