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

Ignition Relay: Description and Operation



With GEMS (Generic Engine Management System)

Ignition Relay
This relay is ignition key controlled and supplies a feed to the coils, evaporative emission canister purge valve and heated oxygen sensor. When the ignition key is turned off, supply to the coils is cut immediately.