Our FCOM states the following:
'Except for approaches with "LNAV/VNAV" minima that have specified minimum temperatures (e.g. ANC –25°C), cold weather temperature corrections shall be added to both the procedural altitudes and the DA/MDA...'
Ergo, if a minimum temperature IS specified, then temperature corrections don't need to be applied provided the temperature is at or above the minimum specified temperature. If the temperature is below the minimum specified temperature, then the approach may be flown to the higher "LNAV" minima, provided temperature corrections are added to the procedural altitudes and the LNAV MDA.