Operation CHARM: Car repair manuals for everyone.

Dual Zone

You many select the DUAL ZONE mode in 1 of the following 2 ways:
^ Press the PASS button
^ Adjust the passenger control head

The programmer independently operates the driver and passenger air mix valves. The passenger may operate the passenger temperature in order to request a warmer or a cooler temperature on the passenger side of the vehicle. When this occurs, the programmer energizes the passenger air mix valve actuator in order to increase or decrease the passenger side discharge temperature.