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 logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Fan



Monitors Electronic Control Module (ECM) command to engine cooling fan. Displays ``yes'' when ECM energizes fan relay. Indication should be ``no'' when coolant temperature is below 106°C.