A4 V6-3.0L (AVK) (2004)
Climate Control Exhaust Gas Sensor: Service and Repair
Sensor For Air Quality -G238-, Removing And Installing
NOTE:
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The Sensor for air quality -G238- is a highly sensitive electronic component that can be damaged if it comes in direct contact with solvents, fuels
or chemicals (e.g. impurities may enter through area -A-).
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Do not install sensors that were previously improperly stored (e.g. in tool boxes etc.).
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Do not store removed sensors in areas that are contaminated with solvents, fuels and certain other chemicals (fluids or gases).
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The sensor for air quality is in different housings, version "1" was installed at beginning of production. This sensor was replaced in a running
change to version "2", however it has the same function.
Removing and installing
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Remove plenum cover.
Version "1"
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Disconnect harness connector -A- from sensor.
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Remove bolt -B-and remove sensor.
Terminal assignment in connector -A-
1
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B+ (terminal "15")
2
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Minus (terminal "31")