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
EFE Solenoid
The SCAN tool displays the on/off status of the
EFE system. When the
ignition switch is on and coolant temperature is low, the ECM completes the
EFE solenoid ground path, energizing the
solenoid, which in turn energizes the heater grid. When temperature increases, the ECM opens the solenoid ground path and the
EFE heater is turned off.