For 1990-2009 cars only
The following conditions indicate that the electrical circuits are functioning properly:
| • | The air conditioning operates at all speeds in any position except for OFF |
| • | The A/C compressor clutch engages |
The system is charged properly if the hand-felt temperatures of the following components are the same:
| • | The A/C evaporator inlet pipe |
| • | The A/C receiver/dryer or dehydrator surface of an opening system |
The air conditioning control head is operating correctly when the air conditioning control head distributes air from the designed outlets.
