Jetta GLS Wagon L4-1.8L Turbo (AWP) (2002)
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Run engine for 2 minutes at idling speed.
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Check oxygen sensor heater status in display zone 2:
Display: Htg.bC.ON, Htg.bC.OFF (alternating)
NOTE: The oxygen sensor heating may be switched on or off depending on the operating mode of the engine, therefore the display in display zone 2
may show "Htg.bC. ON or alternating from Htg.bC.ON to Htg.bC. OFF.
If the display does not indicate as described:
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Press -> key.
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Press keys 0 and 6 for the "End data transfer" function and confirm input with the Q key.
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Switch ignition off.
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Remove protective cover -arrows- and separate 6-pin connector (black) - 1 - to Heated Oxygen Sensor (HO2S) (G39).
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Set multimeter to measure resistance and connect it to contacts 3 + 4 of connector to oxygen sensor. Check oxygen sensor heating for closed
circuit.
Specification: 2.5 to 10 Ohm (at room temperature)
If it is determined that oxygen sensor heating has an open circuit:
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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: Computers and Control
Systems/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: Computers and Control Systems/Testing and
Inspection
Engine code AWW, Refer to "Monitors, Trips and/or Drive Cycle/Generating Readiness Code" See: Computers and Control Systems/Testing and
Inspection