Monitor Description

WARNING: This page is about a different variant/trim than selected.

The No. 2 engine coolant temperature sensor is used to monitor the engine coolant temperature. The No. 2 engine coolant temperature sensor has a thermistor with a resistance that varies according to the temperature of the engine coolant. When the engine coolant temperature is low, the resistance in the thermistor increases. When the temperature is high, the resistance decreases. These variations in resistance are reflected in the output voltage from the sensor. The ECM monitors the sensor voltage and uses this value to calculate the engine coolant temperature. If the No. 2 engine coolant temperature sensor output voltage deviates from the normal operating range, the ECM interprets this as a malfunction of the No. 2 engine coolant temperature sensor circuit, illuminates the MIL and stores a DTC.

Example:

If the No. 2 engine coolant temperature sensor output voltage is less than 0.081 V for 3 seconds or more, the ECM store this DTC.