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

Hot Mode

The scan tool displays On or Off. The PCM has the ability to disable 3 injectors during an engine overtemperature condition. The engine enters this mode of operation if the ECT reaches 131°C (268°F). This protection mode permits the PCM to alternate between groups of 3 cylinders, thereby reducing engine temperature. On indicates that the engine is operating in the alternating 3 cylinder mode.