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2001
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L200 L4-2.2L VIN F
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Repair and Diagnosis
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Transmission and Drivetrain
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Automatic Transmission/Transaxle
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Testing and Inspection
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Initial Inspection and Diagnostic Overview
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Description of On-Board Diagnostics
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Open and Closed Loop Operation
Open and Closed Loop Operation
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.