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Home >> BMW >> 2009 >> 550i Automatic >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Self Diagnosis - Theory & Operation (N62) >> 1.10 Engine Cooling System Monitoring >> 1.10.1 Diagnosis of ECT sensor >> Notes

1.10.1 Diagnosis of ECT sensor: Notes

The diagnosis of the engine coolant temperature sensor (ECT sensor) consists of circuit continuity checks and several rationality checks of the coolant's temperature behavior.