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)

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Reinitializing A/C Compressor After Repair

Note:
If Engine Code 66 is set (will NOT illuminate check engine light) the PCM will NOT energize the Compressor Clutch when requested.

If this Engine Code or other HVAC Codes are set, they must be cleared to reset the system before the compressor will operate.