Glossary “open loop” Definition:
Mode of computer operation in which fuel delivery calculations and idle speed are based primarily on preprogrammed values, not O2 sensor input. O2 sensor value is not used during Open Loop.

Glossary “open loop strategy” Definition:
System operation which has only commands, but no feedback.

Glossary “open structural member” Definition:
Flat body panel having an open access from the rear.

Glossary “open system” Definition:
Crankcase emission control system having no tube from the crankcase to the air cleaner; drawing air through the oil filter cap only.

Glossary “open end wrench” Definition:
A wrench with three-sided jaws on both ends.

Glossary “open end spring” Definition:
A coil spring having its end loops apart from the spring coils.

Glossary “open chamber head” Definition:
A cylinder head in which the cylinders have no quench area.

Glossary “open circuit” Definition:
1). Circuit in which there is a break in continuity. 2). An open circuit is any circuit that is not complete and in which no current flows.

Glossary “open circuit voltage (OCV)” Definition:
Voltage available in a circuit, before an loads are applied.