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

Electrical Diagrams

The electronic control module (ECM) receives inputs from the engine sensors and switches. and controls the functions of the engine. The electronic control module (ECM) also controls the check engine indicator light and allows for diagnostic testing through the assembly line diagnostic link (ALDL) connector.