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

Cold Start Up

The scan tool displays Yes or No. A cold start up is when the engine coolant temperature rises above a predetermined temperature during an ignition cycle. The next ignition cycle the engine coolant temperature should be below a predetermine( temperature. Also the engine coolant temperature and the Intake Air temperature are less than 50 degrees C (122 degrees F) and are within 3 degrees C (5 degrees F) of each other at start up. When the above is true the scan tool displays Yes.