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

Charge Telltale

If the voltage at the ECM generator L-terminal is low when the engine is running, the ECM will send a message to the BCM over the CAN link, who will send a message to the I/P cluster over the Class II link to turn On the Charge telltale.