The Isuzu Trooper (98 – 02) electronic consists of the thermo sensor (1) and unit (4) which functions electrically to reduce the noises being generated while the system is in operation. The electronic thermo sensor (1) is mounted at the core (2) outlet and senses the temperature of the cool air from the (3).

isuzu trooper electronic thermostat schematic diagram

Temperature signals are input to the unit. This information is compared by the thermo unit and the results in output to operate the A/C relay and turn the magnetic clutch “ON” or “OFF” to prevent freeze-up. A characteristic of the sensor is that the resistance decreases as the temperature increases and the resistance increases as the temperature decreases.

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