Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

System Check - Refrigerant

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.