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

Turn Signal Switch

Range: Active/Inactive
The BCM uses this input in order to determine the state of the turn signals. A 12 Volt input from the turn signal circuit is used in order to sense that the turn signals are on. When the turn signals are on or cycling, ACTIVE is displayed. When the turn signals are off, INACTIVE is displayed.