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Home >> Saab >> 2002 >> 9-3 Viggen, 4D Hatchback >> Repair and Diagnosis >> Engine Performance >> Specifications >> Engine Controls - Service & Adjustment Specifications >> Ignition System >> Ignition Timing
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Ignition Timing

Trionic Engine Management System measures spark plug resistance to control ignition timing, eliminating the need for Camshaft Position (CMP) sensor and Knock Sensor (KS). Ignition timing is controlled by ECM and is not adjustable.