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Home >> Pontiac >> 2006 >> Solstice Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 2.4L - DTC P0010 To DTC P0340 >> DTC P0117 or P0118 >> Circuit/System Description

Circuit/System Description

The engine coolant temperature (ECT) sensor is a variable resistor that measures the temperature of the engine coolant. The engine control module (ECM) supplies 5 volts to the ECT signal circuit and supplies a ground to the low reference circuit.