Inspection of HVAC Control Module and Its Circuit: Notes
WARNING: This page is about a different car, the 2011 Suzuki SX4. However, it is still accessible from the selected car via links, so may be relevant.
HVAC control module and its circuits can be checked by measuring terminal voltages of HVAC control module connector.
CAUTION:
It is strictly prohibited to contact a voltmeter probe directly onto terminal of HVAC control module connector without wire harness connector connected.