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Home >> Cadillac >> 1997 >> Seville SLS V8-4.6L VIN Y >> Repair and Diagnosis >> Instrument Panel, Gauges and Warning Indicators >> Audible Warning Device >> Testing and Inspection >> Component Tests and General Diagnostics >> Circuit Operation >> Engine Coolant Temperature Warning (Medium Chime)
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Engine Coolant Temperature Warning (Medium Chime)

The Powertrain Control Module (PCM) interprets engine coolant temperature through the Engine Coolant Temperature (ECT) Sensor. When the PCM determines that the coolant temperature has exceeded approximately 131°C (270°F) it sends a Class 2 engine over temperature message. When the Instrument Panel Cluster (IPC) receives this message, it displays the "STOP ENGINE-ENGINE OVERHEAD" message on the Drivers Information Center (DIC) and sends a Class 2 message requesting the Radio (IRC) to turn the chime "ON."
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