Operation CHARM
: Car repair manuals for everyone.
Home
>>
Saturn
>>
2000
>>
LS L4-2.2L VIN F
>>
Repair and Diagnosis
>>
Transmission and Drivetrain
>>
Automatic Transmission/Transaxle
>>
Testing and Inspection
>>
Initial Inspection and Diagnostic Overview
>>
Open and Closed Loop Operation
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
Open and Closed Loop Operation
If there are any oxygen sensor related diagnostic trouble codes or if the oxygen sensor does not switch between rich and lean, the PCM will not go into closed loop fuel control operation.