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
Loop Status
The scan tool displays Open Loop or Closed Loop. Closed Loop indicates that the
PCM is controlling fuel delivery according to feedback (input) from the
oxygen sensor. Open Loop indicates that the PCM is ignoring the oxygen sensor input. In Open Loop the PCM bases fuel delivery on input from the TP sensor, the ECT sensor, and the MAP sensor.