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Cadillac
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1991
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Seville Base
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Tests W/Codes
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Diagnostic Tests
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Pcm Code EO15, Open Coolant Sensor Circuit
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Test Conditions:
Test Conditions:
Codes EO37 and EO38 not set and MAT sensor value is greater than or equal to 23°F (-5°C).