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

Fuel Shut-Off



Fuel Shut-Off





If any of the following criteria are fulfilled, fuel shut-off will take place:
^ supply +15 not present.
^ fully depressed accelerator pedal during starter motor cranking
^ engine speed above 6200 rpm.
^ air mass/combustion exceeds a calibrated value, unique for each engine variant.
^ immobilizer code faulty.
^ major fault in throttle control
^ ignition system not supplied with current.
^ during engine braking on certain conditions.
^ engine torque exceeds a calibrated value during throttle limp-home.