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Home >> Saab >> 1999 >> 9-3 Base, 4D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Basic Testing >> Ignition Checks >> Programming ECM

Programming ECM

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If power supply to Electronic Control Module (ECM) is interrupted, all previously stored adapted sensor values will be erased. Vehicle will need to be driven for a prolonged period in order to relearn sensor data and restore peak performance.