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

Malfunction Indicator Lamp: Description and Operation

PURPOSE
To alert the vehicle operator of a malfunction in the electronic engine control system.

OPERATION
The Malfunction Indicator will light with the ignition switch in the ON position prior to cranking, and goes out when the engine starts. If a fault develops, the powertrain control module will turn the indicator ON.