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Home >> Lexus >> 1994 >> SC 400 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Emission Systems & Sub-Systems >> Exhaust Gas RECIRCULATION (EGR) System Operation >> Notes
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Exhaust Gas RECIRCULATION (EGR) System Operation: Notes

NOTE: DO NOT warm the engine until specified. Some testing must be performed when engine is cold.
Fig 1: Identifying Ports On EGR Vacuum Modulator (SC400)
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