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impact sensor

Glossary “impact sensor” Definition:
Sensor used to detect a collision. It is part of the air bag system, and is mounted in the front of the vehicle.

impedance

Glossary “impedance” Definition:
The total opposition a circuit offers to the flow of current. Including resistance and reactance and is measured in Ohms. Most digital meters have 10,000,000 Ohms of impedance to protect computer circuits

impact failure

Glossary “impact failure” Definition:
The failure of a part or assembly due to repeated impact or off-square seating.

immobilizer

Glossary “immobilizer” Definition:
The system in the automobile that keeps the vehicle from engine opperation by anyone but the athorized opperator. A required system in Germany

impact driver

Glossary “impact driver” Definition:
A screw driver like tool that is hit with a hammer to apply high forces to tighten or loosen screws. The body of the driver can be rotated to change the direction of the applied force, to loosen or tighten a fastener.

I/M 240

Glossary “I/M 240” Definition:
A 240-second emissions-inspection program that used loaded-mode testing that simulates the federal urban test cycle for certifying new vehicle-emissions performance.

IMACA

Glossary “IMACA” Definition:
International Mobile Air Conditioning Association.

imbalance

Glossary “imbalance” Definition:
Improper weight distribution, or heavier on one side than the other. In a rotating component, often causes a vibration.