Possible Causes
    Fresh Air Blower (V2) defective
    Control Module for Fresh Air Blower (J126) defective
    Short of open circuit in wiring to Fresh Air Blower (V2)
    Climatronic Control Module (J255) malfunctioning

Possible Solutions
    Check Fresh Air Blower (V2)
        Perform Output Test (Check Air Vents while Blower is active)
        Check Meas. Blocks while Blower is active
    Check Control Module for Fresh Air Blower (J126)
        Perform Output Test (Check Air Vents while Blower is active)
    Check wiring and connectors