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 Switch: Testing and Inspection


Ignition switch "START" signal can be checked at ECU terminal 1C. While cranking, terminal voltage should be 6 - 11V. With ignition switch "ON," voltage should be below 2.5V.