For 1990-2009 cars only
Perform the following test in order to determine whether the electrical, vacuum and refrigeration systems operate properly.
| • | The electrical circuits operate properly if the following conditions are true: |
| - | Proper operation of the air conditioning modes and the blower at all speeds with the mode lever in any position except OFF |
| - | Engagement of the compressor clutch |
| • | The system is properly charged when the evaporator pipe and the accumulator surface have the same hand-felt temperature. |
