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Where does the air bag module (SDM) collect its data?

April 26, 2017air bag collect Data module sdm

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Where does the air bag module (SDM) collect its data?

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All SDM recorded data is measured, calculated, and stored internally, except for the following: Vehicle Speed, Engine Speed, and Percent Throttle data is transmitted once a second by the Powertrain Control Module (PCM) via the Class 2 data link, to the SDM.