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

Warm-Up Cycle

Warm-up Cycle
A "Warm-up cycle" consists of engine start-up and vehicle operation such that the coolant temperature has risen greater than 40°F from start-up temperature and reached a minimum engine coolant temperature of 160°F. If this condition is not met during the ignition cycle, the diagnostic may not run.