NSX V6-3.2L DOHC (VTEC) (1997)
Flowchart-Heater Core Temperature Sensor (Part 2 Of 2)
Self-diagnosis indicator light D comes on: Indicates a problem in the heater core temperature sensor circuit. Use a digital multimeter (KS-AHM-32-003)
to check it.
The heater core temperature sensor is a temperature dependent resistor (thermistor). The resistance of the thermistor decreases as the engine coolant
temperature increases.