Chevrolet Equinox Service Manual: Afterblow Enabling
The afterblow mode can be enabled using the scan tool. The afterblow mode allows theblower motor to operate after the engine has been turned off. This operation of theblower motor dries the evaporator core, which reduces the amount of microbial growthwhich can create undesirable odors.
Use the following procedure in order to enable the afterblow mode:
Connect the Scan Tool.Turn ON the ignition, with the engine OFF.Build the vehicle with the scan tool.Select Module Diagnosis.Select Remote Heater and Air Conditioning Control Module.Select Configuration/Reset Functions.Select HVAC Afterblow Configuration.When afterblow has been enabled by the scan tool the blower motor will operate at68% blower speed, following the sequence below up to 5 times. This could last up toan hour:
The blower motor will be OFF for 7–11-minutes.The blower motor will RUN for 25–30-seconds.The following conditions must be met for the HVAC module to operate the afterblow:
The engine must be turned off for at least 30-min.The outside air temperature must be at least 21°C (70°F).The A/C compressor must have operated for more than 2-minutes before shut down duringthe latest key cycle.The system voltage must be at least 12-V.
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