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

Malfunction Indicator Lamp: Description and Operation

The CHECK ENGINE (Malfunction Indicator Lamp) Indicator in the Instrument Panel Cluster. The CHECK ENGINE Indicator will illuminate with the Ignition Switch in "RUN" position and engine off. The light will stay on a short time after the engine starts and should go out in 1 to 5 seconds. If the light stays on, or comes on while driving, service to the emission control system may be required. The indicator is controlled via a hardwired connection with the PCM and the IPC.