Afterblow Function

The afterblow function helps to removes condensation from the evaporator core.

The PZM begins a timed delay after the ignition is turned OFF. After the delay time elapsed, the PZM sends a serial data message to the heater and A/C programmer in order turn on the blower. After the afterblow function is complete, the heater and A/C programmer turns oft the blower. Then the heater and A/C programmer than sends a serial data message to the PZM in order to enable the battery guard function.