Passport EX 2WD V6-3.2L DOHC (6VD1) (1998)
Ambient Temperature Sensor / Switch HVAC: Description and Operation
Electronic Thermostat
The electronic thermostat senses the temperature of cool air from the evaporator by means of the evaporator temperature sensor. This information
determines whether the thermostat will provide ground to the thermo switch relay. When the temperature becomes too low, ground is not provided.
OFF: Below 3.5 ± 0.5° C (38.3 ± 0.9° F)
ON: Above 5.0 ± 0.5° C (41.0 ± 0.9° F)