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1999
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Prizm L4-108 1.8L DOHC VIN 8 MFI
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Scan Tool Testing and Procedures
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Scan Tool Data Definitions - Powertrain Systems
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Loop Status
Loop Status
The Loop Status parameter will display one of the following conditions:
^
OPEN LOOP: The engine has not met all conditions to go into Closed Loop.
^
CLOSED LOOP: The
PCM
is using the
oxygen sensors
as feedback for fuel control.