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

ME-SFI Control Unit Design




ME-SFI Control Unit, Design




Arrangement of connectors ME-SFI control module with 6 connectors (A - F)
Connectors A - D attached to vehicle
Connectors E and F attached to engine

Aluminium die-cast housing, not watertight. Installed in watertight control module box.
Certain control module boxes with blower.