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

(Alt. Fuel) MIL Command

Display shows ON or OFF. The MIL (Service Engine Soon or Check Engine) is controlled by both the AF ECU and the gasoline control module (VCM/PCM or ECM). The (Alt Fuel) MIL COMMAND indicates ON whenever the MIL Control (AF ECU) output circuit is commanding the MIL ON. The MIL is illuminated if either module has detected a problem that affects vehicle emissions, driveability or could cause powertrain damage.