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Engine Coolant Temperature Sensor (ECT)

If voltages do not fall within specifications, replace ECT sensor. See ENGINE COOLANT TEMPERATURE SENSOR  table.

ENGINE COOLANT TEMPERATURE SENSOR

Application Specification
High Coolant Temperature Near 0 Volts
Low Coolant Temperature Near 5 Volts

For testing engine coolant temperature sensor, see DTC P014: SHORTED ENGINE COOLANT TEMP (ECT) SENSOR, DTC P015: OPEN ENGINE COOLANT TEMP (ECT) SENSOR and DTC P073: INTERMITTENT ENGINE COOLANT TEMPERATURE (ECT) SENSOR SIGNAL in SELF-DIAGNOSTICS -- ALLANTE article.

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