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

IAC System Monitor

IAC System Monitor:

IDLE AIR CONTROL (IAC) SYSTEM MONITOR (J 37027-A)

Used to test IAC motors for correct functioning and proper response to commands.

^ 22L IAC driver and node light kit.

^ J 37027-3 IAC system check lights.