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Saab
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2004
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9-3 Arc, 2D Convertible, Standard
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Repair and Diagnosis
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Engine Performance
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TRIONIC T8 Fuel Control System
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Technical Description
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Brake light switch (29), T8
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Main task
Main task
Brake light information is used by the control module to:
Disengage cruise control
Limit engine torque when braking
Allow for vehicle speed signal diagnosis.