Defogger Switch Test: Millenia
Remove A/C amplifier/climate control unit assembly. Separate climate control unit from A/C amplifier. Check continuity between climate control unit connector terminals "F" (Green/Black wire) and "Q" (Pink/Green wire) with rear defogger switch depressed. See Fig 1 . If continuity exists, climate control unit is okay. If continuity does not exist, replace climate control unit.