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Home >> Volvo >> 2004 >> XC90 Base, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Electronic Modules - Design And Function >> Climate Control Module (2003-2004) >> Diagnostic Functions >> Frozen Values Climate Control Module, Description >> Sensor Signal, Air Quality Sensor (AQS), Status
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Sensor Signal, Air Quality Sensor (AQS), Status

The climate control module interprets the pulse width of the air quality sensor and presents it as different levels.

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