2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 231
Is the inspection result normal?
YES - INSPECTION END
NO - Replace engine coolant temperature sensor.
P0117
P0117, P0118 ECT SENSOR
Description
The engine coolant temperature sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the ECM. The
modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in
temperature. The electrical resistance of the thermistor decreases as temperature increases.
