DeVille DHS V8-4.6L VIN Y (2000)
Evaporator Core: Service and Repair
Afterblow Enable Procedure
The afterblow mode can be enabled using the scan tool. The afterblow mode allows the blower motor to operate after the engine has been turned off.
This operation of the blower motor dries the evaporator core, which reduces the amount of microbial growth which can create undesirable odors.
When the afterblow mode has been enabled the blower motor will operate at medium speed for 4 minutes after the engine has been turned off. The
following conditions must be met for the Instrument Panel Module (IPM) to operate the afterblow:
1. The outside air temperature must be at least 21°C (70°F).
2. The A/C compressor must operate for more than 3 minutes.
3. The engine must be turned off for at least 45 minutes.
4. The system voltage must be at least 12 Volts.
Use the following procedure in order to enable the afterblow mode:
1. Connect the Scan Tool.
2. The ignition should be ON, but the engine should not be operating.
3. Select instrument panel module.
4. Select special functions.
5. Select miscellaneous test.
6. Select IPM recalibration.
7. Select YES to enable the afterblow.
The Scan Tool will recalibrate the IPM to enable the afterblow mode.
