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

Key In Ignition

The scan tool displays Yes or No. The RFA system receives this information on the serial data line from the BCM. When the key is IN the ignition switch, the scan tool will display Yes. When the key is removed from the ignition switch, the scan tool will No.