Dual Zone

Vehicles with the dual zone option (RPO CJ3) will have an additional air temperature actuator. The HVAC control module will have dual sliding temperature switches instead of the rotary temperature switch. The fuse block provides power to the right air temperature actuator through the ignition 3 voltage circuit. When a desired temperature setting is selected, a signal is sent from the HVAC control module to the right air temperature actuator through the auxiliary air temperature door control circuit.

When the logic receives the signal, the right air temperature actuator moves the temperature door to a position to divert sufficient air past the heater core or evaporator to achieve the desired vehicle temperature. Ground is provided by the ground circuit.

The dual zone controls allows for maximum temperature offset between the driver and passenger. It is possible to select maximum airflow over the evaporator core with one dual zone switch along with maximum airflow over the heater core with the other dual zone switch. Each air temperature actuator is independent from the other and the passenger side is not limited in its range of temperature offset.

"For a description of the RPO Code(s) shown in this article or any of the images therein, refer to the RPO Code List found at Vehicle/Application ID". RPO Codes