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
Cranking Signal: Description and Operation
CRANK SIGNALDESCRIPTION The Crank Signal is sent from the engine starter circuit to the
Engine Control Module (ECM). When the ECM detects that the engine is cranking, it uses the crank signal as one of the signals to control the fuel injection timing and Idle Air Control
(IAC) valve operation.