The hvac has a service mode. To ewnter service mode and self diagnostics, turn key on, engine off. At the same time, press off and warm on the climate control center. Hold buttons until a segment check is displayed on the instrument panel cluster. This should take about 3 seconds. If any segments of ipc do not lite, replace display. After service is entered, all existing trouble codes will be displayed. A is for acp, check those codes. Let us know.
Wednesday, February 13th, 2013 AT 4:41 PM