Operation CHARM: Car repair manuals for everyone.

General Information

The HVAC control processor will enable the blower motor to purge the HVAC module of moisture after the A/C has been operating. Afterblow will be allowed once the ambient air temperature reads 27°C (80°F) or higher and the battery has a minimum of 12 volts. The HVAC control processor will activate the blower motor on high speed for a few seconds.